7afe build, lets see if its worth it Options

[celica74]

So a little history. Have had my 94 st for over three years now. Has had two motors in it. Stock one was neglected so i replaced it with a 95 with half the miles. All the car has done to it is the basics. Short ram intake, exhaust with ebay header, dropped 4 inchs on drop zones(cheap rout i know but im happy with them. Voxx 7.5 rims running 205/40-17s. I love thos car. Cant believe i almost got rid of it for a genesis coupe. Havent done anything to the car in the past year because i bought a bike. But now im back in the car game and ready to spice her up. Have considered many options on what i could do to make then realiable eco friendly cheap slower then a single cam civic motor some pep. Yes ive gone over the 3sgte and 3sge swaps. Honestly there not for me. I almost turbos my car 2 years ago but lacked funds and patience. So the other day i took a drive up to virgia to visit a fellow 6gc owner(or have a one. Hes parting his car). I pics up some goodies from him for a good price. Dont wanna spoil anything. Pics will be up soon on what i got and what my intentions are.

This post has been edited by celica74: Aug 29, 2012 - 11:43 AM

[celica74]

Ok as promised here are some pictures of what ive been doing to the car in the past week.



Realized the rear motor mount was bad so i had a blast pulling the old one out



this is what it look like. the rubber was completely shot, i could pull the metal out of it.

Also my driver front fenders clear coat was shot, keep in mine the age of the car, 18 year old paint. Surprised its held up this long. So i decided to experiment with my lack of body work and painting skills.



sanded her down rear good.


Masked it off real well.



after two coats of primer.



a couple base coats, the last one i did i make it nice and thick.




and a clear coat or two.
Overall im not displeased with it, hard to tell due to the photos. Now all i have to do is to decide if i wanna paint the whole car like that. I do like the kinda flat black look.

I also was bored one day and had a spare 7a intake manifold under the house that i brought out. One member mentions removing material from it to open it up some and create better flow. So i figured id go HAM on it and see what i could do.



A carbon composite disk on an angle grinder make quick work of the aluminum. If you know what the upper manifold looks like youll realize how much i took off.


As for the lower manifold if you know what they look like, they have high ridges and notches im guessing to guild the air into the runners. I took as much out as i could reach.
I wouldnt expect this to make much performance gain if any. We all know its not a honda and things like this would most likely hurt it more then help it, but like i said i had a spare laying around and decided to give it a try. Havent installed it yet. When i do ill report back.

As for my trip up to virgina the other day, i did bring some things back with me. Reason being my motor is starting to piss oil past the rings and burning a quart every 700 miles. Common problem in the 7a's along with the valve stem seals going bad. I dont have time to pull the motor and do a rebuild. I need my car everyday for work. So i decided to get this.




Thanks to "boostedricer"/brandon, i now have a 94 7afe complete block, head, and 2.5inch full exhaust. Only has 160k on it. He also had some pigtails i needed(alternator voltage regulator, and the coolant temp. sensor for the ecu). Both im assuming chaffed off due to the bad motor mount.

And here are just a couple of old pics of my car.



Pretty much how the engine bay sits right now, i do have a different intake tube on it, and the battery is in the trunk.
And heres a picture of the raleigh meet we had im thinking two years ago.



So my plans are this. Taking the motor i bought and stripping it down, measuring everything and see what i need in terms of bearing, if i have to send it off the the machine shop and what not. Going to be doing a complete rebuild. After searching for hours i finally found a conformation that putting in 4agze 8.5:pistons in a 7a will increase the comp. to 11-11.2:1 comp. See where im going with this? I wanna build an n/a 7afe as no one really has done a good write up before. I know in order to use those pistons ill have to convert the rods to full floating. Will need some advice on how that will be tackled. Im also going to be looking into a port and polish, a valve job, and ill have to see the rates for getting the cams ground. Any other ideas on how to make this 7a a little more power will be thought over.

This post has been edited by celica74: May 13, 2012 - 8:31 PM

[richee3]

I did a price check a while back and Crower Cams wanted $11/lobe for a regrind. Just to get you started

[celica74]

I did a price check a while back and Crower Cams wanted $11/lobe for a regrind. Just to get you started

Seems reasonable, thankyou. Ill have to look into it.

[al94st]

Cool stuff, glad to see you got another engine to mess with. BTW that meet was only like a year ago I think.

[SwissFerdi]

Hey man, that's quite nice. Tell me, how did the exhaust header change the 7A? I'm also curious for the results of "clearing" the intake manifold.

[celica74]

Hey man, that's quite nice. Tell me, how did the exhaust header change the 7A? I'm also curious for the results of "clearing" the intake manifold.

Honestly the header only change the torque range. Moved it up in the rpm. Cant tell if it added any power. Dyno results from someone would be nice. Like i said intake manifold isnt on it. When it is ill post my thoughts.

[celica74]

Cool stuff, glad to see you got another engine to mess with. BTW that meet was only like a year ago I think.

Yea nice not having to rush it. And i couldnt rememberwhen it was. Very excited for this weekend.

[celica74]

Little update. Getting the engine on a stand later this week before the meet this saturday. Hopefully gunna get things done to the car before then aswell. Just finished up re nightshadding my lights and a clear coat. Gunna work on the hollowed intake tomorrow. Ill poster videos for sound and speedometer purposes. Then if i have time install the 2.5 exhaust. Also been thinkin about the 7a build. No more power expected from a high comp setup then 40hp as described in edos build thread. Considering going stock for boosting later.

[ricochet1490]

I'm probably different in my thinking... but I say do something unique.

My fav threads are the 7a supercharged engine thread from a while back
Czwalgas Rally thread
etc. because they're different
Things that aren't the norm.... the gt4 front with 3sgte swap is uninteresting to me.... and that's not to step on anyone's toes, just my views.
It's why I'm doing RHD beams... not just beams swapped LHD
I'd even consider rhd beams power with awd if I could get the parts at the right price.

Back to the thread. I say DO IT.It would be interesting! a 11.5 compression ratio, with a high quality head gasket with arp studs 7a... cam regrind.. it would be awesome
I mean a cam regrind on the 5s adds 20-30hp when tuned right...
If your intake change works... that'll be cool and +power

if a 7afe gets 34mpg by itself.... imagine what +50hp would feel like? It'd be a whole new animal, fun to drive, and the ^comp ratio and better exhaust, header, and intake could mean 37mpg if you could stay out of the gas and get it TUNED correctly on a dyno because preignition would be a serious concern.... but heck, you'd be unique and it'd still be N/A... which means generally more reliable and the cost would be lower than a turbo as well I would imagine...

just my .02

This post has been edited by ricochet1490: May 15, 2012 - 11:29 PM

[celica74]

Well wasnt about to get the exhaust on today. Gotta do some cutting and welding. Did try pulling the gas tank to allow it to fit but that didnt work. Did pull the fuel pump just out of curiosity. The pump sock was brown. I still had the 255lph pump up in my room and it came with a new sock so i went ahead and threw that on there. Hopefully ill never have to pull the tank again. Ive youve ever done it you should know what im talking about. Alot of time getting it to come out, and even more trying to get everything lined up going back in. I did manage to get a video the other day. Just a quick pull, just to see the acceleration and sound of the car.



again only thing performance wise done to the car is short ram intake and exhaust.

[celica74]

Friday i got the intake manifold on. Pictures will be up later. Did notice less throttle responce after installation. Ben did make a good point that only difference would be in the top end due to "better flow". Will probly put the stock upper manifold back on. Looking at it i believe itll help mix the air and fuel. Did adjust the timing again and did see a little more pep. After driving bens 3sgte i def. Need to get this project going. I feel like i could outrun my car on foot.

[celica74]

Valves were surprisingly very very clean.




good comparison of a stock intake manifold and the one i modified. Again, probably going to install stock upper to help mix the fuel and air.

After i finished the night shade with a clear coat. Didnt wet sand, didnt see a need for it after i washed them real good. Yes i know i need to debadge her.



^ picture was taken after my dads birthday dinner. Honestly sat there starring at her for 10 minutes haha. Am i the only one?

FINALLY got my spare 7a up on a stand. Didnt get far into the tear down. Got the crank pulley, timing belt gear, water pump, power steering pump, rear main, and half the front main off. Going to get back into it tomorrow night. taking my time pulling bolts and placing them in bags with labels to make sure when everything goes back together i can just grab what i need without hesitation.

[celica74]

Alright a small update. Been busy with work and what not. Honestly hate coming home after working on cars all day long and it kinda makes me lazy enough to not work on mine. But anyways, look who i ran into the other day.

BEN! Went to his work to pick up a 12 point 10mm socket for the robs bolts.
So today i got the oil pan off

Looking at the pan and even the oil pickup its clear the person who opened it up last used way too much RTV, and oddly enough put it towards the inside lip of the pan.

Previous owner stated the head gasket went twice on him in the little time he had the car before parting it. Leaving a nice milky goo in the oil pan

I honestly think this motor wasnt cleaned when the guy before him had it, the rear main seal, pistons, oil pump and everything look new.
Got the upper oil pan(baffle) off as well, i cant understand why toyota decided to use allen bolts on this, almost rounded out 2 of them.

Good look at the crank and rod assembly, again way too much RTV. Remember too much is just as bad as too little.

Oil pump off, gasket again looking newish.


A nice view of my working conditions

And finally, this is the reason i kinda was out of the car scene for a while




Hopefully tomorrow ill get my act together and pull the crank and pistons and hopefully the robs and crank journals will be ok, seeing the RTV all up in the pump pickup. Monday is payday so i might be ordering some parts. importperformanceparts.net sells oem and hp rebuild kits. Looking at getting the oem kit and maybe .040 pistons. Does anyone know what that will do to the compression? The bore would be 82mm then. Ive tried using the online calculators and for some reason i always get a very off number.

[celica74]

This update is not good. Pulled the pistons and crank. Here are some pictures. Self explanatory.
This is cylinder number one.

This is number two.

And this my friends, is number three, the devil.

Anyone notice anything missing?





If you havent guessed yet, cylinder number three had no bearing for the rob cap. I couldnt tell you if it was even there to begin with. The cap was moving back and forth very loosely when i was loosening the bolts. Sure enough, nothing on the inside but a F***ed up crank and rod cap. Looking at all the other bearing its clear this motor starved of oil. Im pretty sure the moron who opened her up last didnt know and didnt care what they were doing. Could be why they decided to sell the car to a guy who knows nothing about cars and of course is going to buy it just because it was turboed.
Dont know how im going to resolve this issue, was hoping to get this motor in my car within the next month, not looking so good now that i have to either machine the crank or buy a new one. So if your selling a 7a crank, send me a message.

[celica74]

Took the block up to the machine shop. Itll be sitting there till i get the rods and pistons. Machinist says that the crack is usable and that the #3 journal is just bearing material melted to the crank. So i guess i wont have to buy a new one thank god. Blocks going to get the works, cleaning, boring, decking, line hone. Cranks going to get resurfaced, polished and balanced. I still need to tear down the head and take it to get deck and cleaned as well, considering a radius cut on the valves. Dont know what im going to do about beefing it up though. No aftermarket support for valves, springs or retainers. I should have a problem unless i decide to beat on it and actually make 250hp. Would like to know it could handle more though. Ive heard of guys using 4age valves, springs and retainers but no conformation on that. Might just leave it the way it is and save to turbo it into a 7agte. Only problem right now is money. Ive got enough to get the hp kit and the spool rods i want. Thatll atleast put the motor to use and go ahead and get it in the car running.

[celica74]

Hoping to get the crank to be worked on tomorrow so i can order my hp kit. Anyone ever knifeedge a crank before? Hoping i can just do it myself to save some money. Ill talk to the machinest to see how much i could do and at what point he couldnt balance it. Wanna make it as light as possible consider i cant get a 7a lightweight flywheel. Or does the 1zz or 4age or another motor with actual aftermarket support share the same bolt patter and size. Also would like to know the distance between the valve and piston at tdc. Wanna grind the cams just dont know how far i can go before it becomes an interferance motor.

[celica74]

Been hard at work. Like ive mentioned before, im dead set on an n/a build. Did alot of searching and no one that i can find has done anything to the 7a really besides turbo. Hoping this thread will encourage more members with 7a's to not just swap, or turbo, or just leave stock, but to have some fun with it, spend some money and make a screamer. My goal is to outrun a integra gsr. They weight about a hundred or so more pounds then a 6gc, and make about 180 at the crank. So if i can get anywhere from 155 and up hp at the wheels my goal should be achieved. I took the crank and main caps to the machine shop today, getting a quote on knifeedging the crank if the guy there will actually do it. Also took some measurements on the block and determined that i can not only bore .040 over. guess what. I can go more. Block will be bored out .060, leaving about .250 for the cylinder wall. Machinist said some of the honda guys run turbos on cylinder walls less then that, so this should work out quite well. Surprised the 7a have that much meat to it. So with .060 over the 7a will be a 1.95l according to other people who have board only .020 and .040 over before. Gunna order the pistons and rods and rebuild kit probly next week. Pistons specs 82.5mm with 11:1-11.5:1 comp. Alright enough with the technical drowsy eye crap. heres some pictures.

Two pics i took out in fuquay the other night with my friend whos got the only zx2 four door escort.



Didnt get any pics of his car. His escort outran two different gsr's at the strip a couple weeks ago and will be a good benchmark to shoot for.

Started porting the head today. I started on the exhaust thinking if they were off a little bit due to this being my first time porting it wouldnt matter as much as the intake. I used some sanding bits on a drimel and a drill. I also have a metal burr remover, nasty sharp sucker takes the metal away like its nothing, making the initial removal easy.
First port as using the burr remover

Allowed me to open the port right up fairly quick. After that i just used the sanding bits to get everything flowing and opened up in the tighter spots.
This is port one finished

Couple people have said that its better to leave the intake ports a little rough to help create turbulence mixing up the air and fuel, but i figured itd be better to smooth the exhaust out as much as possible to help it flow better. So i used 120 grit sanding wheels and made sure everything was nice and smooth.
Finished up two ports today, heres a look at them.

[Smaay]

good info here

http://www.6gc.net/forums/index.php?showtopic=72502&hl

[celica74]

good info here

http://www.6gc.net/forums/index.php?showtopic=72502&hl

Thanks, ive read it probly 4 times before.

[Takumi-FujiWaraS...]

Need to take a bit more off of those divider's and smooth things out a bit more so carbon is less likely to build up, but for the intake side of things relatively rough (Close to cnc smooth) is what you need.

What all is this build going to consist of topend wise?
I would leave a bit of leeway on the bore as you never know what will happen latter down the road, also make sure you can get the piston's and rings first in the size you pick. All good machinest i know require the piston's first before boring to insure the correct fitment and piston to wall clearance of each cylinder and piston.

Sleeve thickness varies greatly on honda block's a b20's is far thinner than a f22.

Good luck man hope to see some tuned numbers when she's finished.

[celica74]

Need to take a bit more off of those divider's and smooth things out a bit more so carbon is less likely to build up, but for the intake side of things relatively rough (Close to cnc smooth) is what you need.

What all is this build going to consist of topend wise?
I would leave a bit of leeway on the bore as you never know what will happen latter down the road, also make sure you can get the piston's and rings first in the size you pick. All good machinest i know require the piston's first before boring to insure the correct fitment and piston to wall clearance of each cylinder and piston.

Sleeve thickness varies greatly on honda block's a b20's is far thinner than a f22.

Good luck man hope to see some tuned numbers when she's finished.

Pistons will be ordered once they grind the crank so i know what bearing size to get, pistons will be measured before boring to match. Dont really have much to port with so doing the best with what i have on hand. Might buy a porting kit to help. No sure on the head. As we all know the only way to go with cams is to grind, web cams charges 600, very expensive. Havent found any over sized valves, dont think id need them. Cant find stiffer springs, not going to raise the redline so probly be ok without.

[Takumi-FujiWaraS...]

Look into delta for regrinds i'm sure they will do a set for cheap i've ran their 272's in two of my F22 builds and the cost was under $150 total.

I hand port alot of things i've did a few heads, throttle bodies, and Intake mani's.... one of my latest can be found in my "My Project" thread so just put a bit more work into smoothing things up on the exhaust ports it's worth it. You wont see CNC flow numbers, but my last head flowed pretty good.

This post has been edited by Takumi-FujiWaraST: Jun 10, 2012 - 1:28 PM

[celica74]

Machine shop measured the crank, theyd be able to grind it and knife edge for 400, but id be running .020 over bearings, which is probly not a good idea. So im gunna cut my losses and buy a new crank so i know ill be starting fresh. Anyone ever hear of cleggengine? 7a crank from them is 180 i believe. If anyone has a suggestion of another place please let me know.

[celica74]

Finally finish the exhaust porting. Now time to do the intake. Very very long process. If you have the money. Pay someone to do it haha. I also did some searching. No one makes oversized valves for the 7a but i did come across a compqny sells large amount of oem 7a valves. Odly enough its listed as "1zzfe/7afe oem valve". I cant conform that this means yet another aspect of the 1zz is the same as the 7a. Ill do some more research and hopefully if this is accurate i have hopefully an array of valves to choose from. If anyone can conform 7a valve size please let me know.

[celica74]

I did some measuring of the valves and this is what i found out.
Intake valve:




Numbers read: 87.57x5.95x31.09 for the intake

Exhaust valve:




Numbers rear: 87.99x5.94x24.82 for the exhaust


1zzfe specs i found online:
Intake Valve Specs -- 32.00mm Head Diameter, 5.48mm Stem Diameter, 88.67mm Length
Exhaust Valve Specs -- 27.50mm Head Diameter, 5.46mm Stem Diameter, 88.74mm Length

[celica74]

Havent been doing much with this lately. Last week i started a new job, 8-530 everyday. Havent had time to get anything done. Hoping this will change. Still need to get the crank situation figured out so i can buy the hp kit and rods to complete the bottom end. Then the next task will be to work out the valve situation and finish porting the head. Also need to get the cams sent out to be ground.
But just for those who enjoy pictures with new posts, heres one from my new job. Notice ive installed the 2 1/4in exhaust. Doesnt sound so good so ill be buying a resonator and muffler and some stainless and ill be bugging ben to help me weld it all up. Things i also need to do, 20mm spacers, debadge.

[celica74]

Ordered some stuff last week.


top pic is the magnaflow muffler, and the second is a vibrant resonator. Going full 2in exhaust, afraid any bigger will hinder the motor once completed. dont have a pic of the muffler out of the box but ill get one once its on. i also purchased some items which were long overdue. 2 years ago i hit two deer and the passanger side headlamp tab busted, im pretty sure weve all been there before. sense ben got himself a set of projectors i decided to take his old ones off his hands. all are in great shape
bumper off, crash bar about to come off to get the busted lamps out.

Might as well clean them before installing right?


dont have a pic of the new ones on, storm was coming in so me and ben had to rush to get everything back together.

also something i noticed friday at work. had a ae101 i believe(not familiar with corollas chassis codes but a 97 4 door with the 7a) come in for a ps pump, high pressure line, and other things needed to be done. I took a good look at it and noticed something. see if you can spot the difference

if you havent noticed, look at the intake manifold. Notice how the lower left side corner is cut away. unsure if its because of the newer year or if its a corolla thing. i thought it was interesting and wanted too see if anyone had some insight on this.

[al94st]

I can't tell the difference just by looking at that pic, but I wouldn't be surprised if it's a post 95 thing. You'll also notice they changed the alternator bracket to a slightly different black one and no longer tapped the oil cooler return in the top oil pan. I'm not sure if it all changed in 96, but it makes sense.

[Box]

It's a year thing. 94-95 ST had 110hp, where as the 96-97 ST had 105hp.

[celica74]

makes sense. guessing these changes were due to obd2 emissions requirements.

[Box]

Yep, that'd be it. Stupid OBDII.

[celica74]

Yep, that'd be it. Stupid OBDII.

i couldnt agree more haha

[Box]

Oh well. Personally I prefer cars without any computers.

[dakota]

op where are u located in nc? this looks ALOT like my old st do u remember a name or anything from who u got it from? im positive it wasnt from me but im thinking maybe i was a few owners back. the last time i owned it was in 2007 if it is the same car. idk if i have any old pics or not.ill look. if its not the same car then oh well, nice looking car anyways and im def subscribed to see i high compression build.

[celica74]

op where are u located in nc? this looks ALOT like my old st do u remember a name or anything from who u got it from? im positive it wasnt from me but im thinking maybe i was a few owners back. the last time i owned it was in 2007 if it is the same car. idk if i have any old pics or not.ill look. if its not the same car then oh well, nice looking car anyways and im def subscribed to see i high compression build.

ive had it for 3 years now, i live in cary, just outside of raleigh. bought it from a guy in louisburg. apparently im the 6th owner. i know the guy sold it cuz he just bought a 7th gen. cant remember his name, he seemed in the early to mid 20's though.

[celica74]

HP kit has been ordered. Gunna be 3 long grueling weeks till they arrive. Pistons have to be made. Also ordered some other goodies. Shall i spoil or keep the anticipation?

[bsamps4]

I could make you some pistons!!! They would be Cambells brand!

[al94st]

What compression ratio?

[celica74]

Ben. I dont think the tomato soup ones would hold up. Think id have to go with the chicken noodle

Aj. Whats the fun in saying? Surprise! Btw check your messages

[celica74]

Got the rods today. There Max Speeding rods. H beam forged steal with arp 2000 bolts.

[celica74]

more parts have came in. Rebuild kit came in from import performance, everything but the toga oil pump and pistons. Clutch came in, its a spec stage 2. Flywheel also came in from vivid racing. Its an asco 8lb for a 4afe. 93 i believe? and up 4afe's have the same 212mm clutch and 6 bolt crank as the 7afe.

Also the other day a box arrived for me. Sockie tech struts. I think thats what the brand is, can never remember. For $30 plus shipping you can have hood struts. They come with a mounting bracket that bolts right to the hood, and a bolt to replace one on the fender. Took 30 min to install and it looks and functions very well. Ill get some pictures up of everything either later today or tomorrow.

[celica74]

as promised some pictures.




still waiting on oil pump. Taking everything to the machine shop tomorrow so they can finish the block and crank. Just sold my bike so i have some play money. itll all be spent within a week though.

[SwissFerdi]

Expensive flywheel! Nice stuff guy.

This post has been edited by SwissFerdi: Aug 30, 2012 - 7:14 PM

[celica74]

meh, only 380. only one that i could find that would fit. looking at other cars lightweight flywheel i think it turned out to be a good deal.

[celica74]

just dropped off everything at the machine shop. should have it ready sometime wensday. also talked to them about the head. if i wanna run 1zz valves, valve guides from a d16z6 will be cut shorter and then used. yes ill have honda valve guides. Also tomorrow im going to see our good friend aj down in Wilmington. this build is def. starting to go somewhere. im excited.

[Box]

if i wanna run 1zz valves, valve guides from a d16z6 will be cut shorter and then used. yes ill have honda valve guides.

Well, that can't be good.

[celica74]

Haha as long as they work ill be happy. I wont tell anyone there honda just custom

[Box]

There ya go.

[celica74]

Megan coil overs came friday. Put them on saturday. Ill have pics later. Much better ride then what i had. Just finished dialing in the dampeners. Front is at 20 and rear at 25. Back is a little low and the exhaust scraps on rail roads and massive pot holes. Just waiting for them to break in and ill set them to just start tucking rubber. And a tip when installing... dont measure from the spring purch to the lower locking ring, measure fr
m The bottom of the lower mount to the bottom of the strut. Much more accurate. I could slame it, another 1/2 inch in the strut and then drop the spring for 3 1/2 in more drop. Might do it one day for some pictures.

[celica74]

sitting about half an inch lower then before.

Also i think its time to share my build. Went a little different route. Visited aj a couple weeks back and brought some stuff back with me.




Bottom end came back from the machine shop.


Build list is as follows:
7afe bored .040 over
Maxspeeding hbeam rods with arp2000 sptuds
Wisco .040 over pistons forged for 10:1 compression
Asaco 8lb flywheel
spec stage 2 clutch
Toga main and rod bearings
Toga high volume oil pump
Full port probably stage 5 when im done with it. Exhaust bore is 2.5mm bigger already. Still need to finish intake side
1zz oversized valves 1mm over on the intake and 2.5mm over on the exhaust
honda d16z6 valve guides cut shorter to fit
aj's vortech sc setup which right now is 9psi. will be getting a smaller pulley and hopefully run 14psi

[NYp8tBaller07]

I really hope this build works out (keep it to lower boost) and I see a lot of work is put into this car. I have to say two things. please buffer the tail lights a put in some compound to make them shine and please take those HID kits out unless you plan to go with projectors because its just not cool being that guy and blinding people.

[celica74]

I really hope this build works out (keep it to lower boost) and I see a lot of work is put into this car. I have to say two things. please buffer the tail lights a put in some compound to make them shine and please take those HID kits out unless you plan to go with projectors because its just not cool being that guy and blinding people.

Ill be happy to install some projectors, you buying? They are aimed a little down so they arent bad for oncoming traffic. I want 14 psi. Dont think 200hp will be reached without it. Once the car gets paint ill address the tails

[kurt95gt]

Sweet
This is turning into a fun Lil 7a

[NYp8tBaller07]

well it looks like your going about it the right way but i still wouldnt trust it too high :-P

This post has been edited by NYp8tBaller07: Sep 27, 2012 - 11:09 AM

[Ted95]

built sc 7a with 10.1 compression on 14psi should be interesting.. i hope it holds my dude, shaping up to be a cool project

[celica74]

Thanks guys. Looks at others 7a builds i should be able to hold well over 200hp. Im curious to see how it turns out myself. Im not looks for monster power like a 3s. If i wanna drive a stupid fast celica i just have to call ben and soon bobby as well. Im looking for agility. Something i can throw into a corner and come out of it with more speed. I dont see highway pulls as much fun as something that barrels through and out of corners. Everything im doing is for useable power at any speed not just 3rd gear half the time.

[ricochet1490]

Thanks guys. Looks at others 7a builds i should be able to hold well over 200hp. Im curious to see how it turns out myself. Im not looks for monster power like a 3s. If i wanna drive a stupid fast celica i just have to call ben and soon bobby as well. Im looking for agility. Something i can throw into a corner and come out of it with more speed. I dont see highway pulls as much fun as something that barrels through and out of corners. Everything im doing is for useable power at any speed not just 3rd gear half the time.

THIS!

bro - keep it up.
maybe I missed it. What are you using for engine management....
*note here my interest in supercharging on upped compression lol*

[Smaay]

what do you plan on using for engine management?

[Ted95]

it should definately be a beast in the corners with quick power coming off the turns

[celica74]

Buddies got a safc hes looks to sell. Ben keeps nagging me about mega squirt. I honestly dont want to spend too much as in 800 for it. Any ideas?

[SwissFerdi]

Im looking for agility. Something i can throw into a corner and come out of it with more speed. I dont see highway pulls as much fun as something that barrels through and out of corners. Everything im doing is for useable power at any speed not just 3rd gear half the time.

That's exactly my mindset, I'd love a 7A-FZE as well. My only gripe with F/I on this engine is like you say, engine management is f*cking expensive and it just seems odd to spend the same on the rest of the parts and then so much for a silly bit of electronics. I know it is vital, but the cost proportion is just odd.

Then again, I see you're going for quality - your flywheel is 760% more expensive than mine was.

This post has been edited by SwissFerdi: Sep 28, 2012 - 10:30 AM

[celica74]

Please tell me your exaggerating haha. Its the only light weight one available. It is silly. But itll make me have some peice of mind and hopefully some more power. So suggestions would be great as to what to use.

[SwissFerdi]

No I am not, heavy-as-piss OEM-grade for $50 shipped.

This post has been edited by SwissFerdi: Sep 28, 2012 - 1:27 PM

[celica74]

Radiator has been ordered, next bit is either valves or innovative wide band. Cant make up my mind where to spend $300 first.
Also got ben to come out to rockingham dragway with me. He did a hell of a job adapting for his first time out. That 3s flys. With the sc i only gained 3 or 4 tenths off my 1/4 mile. I didnt have the best launches so i know i can drop it down into the 15's.

[bsamps4]

Gotta get that thing built QUICK!

[celica74]

Sho nuf. Going to try to get the radiator in and probly the intercooler sunday. Also bottom end would be nice to have together.

[bsamps4]

We could have that bottom end together in 3 hours

[celica74]

Sunday come to the shop and lets get it done!

[celica74]

Wanna thank ben and sam for coming out today to give me a hand, and aj for already doing this so i knew itd work. So glad i have keys to my work and can go in whenever i want. Makes things alot easier. Got the radiator installed. Took a little longer then was expected. Main problem was mounts.

[celica74]

This week i really cracked down on some porting. Got the exhaust touched up and fully completed, and get all but on port left on the intake side.
Heres a good comparison of before and after for the intake side




Heres two pictures of exhaust port, the first one being cyl 3 and the second cyl 4. Anyone who have looked at the exhaust ports on a 7a will note that looking straight into the port of 1 and 4 can see why the 7a never makes any power, same with the 4afe. So to solve this problem, the outside and insides of the ports were ground out to allow a straight line of air(better flow).


I just with i had a before picture to describe this better. Another factor to the 7a not making power in the intake manifold but me and ben are cooking up some ideas to solve this.
Heres a look at the bottom side of the head, on the left upper ports you can see theyve been ported, and the ports to the right of it havent been.

Also, in the combustion chamber on all cylinders there was a small bump, figured it would be a good idea to grind it down to ensure it would be a hot spot, because hot spots can cause per-detination, and pre-detination can ruin a motor, and ruining my motor will turn me into the hulk, no beuno!


I also replaced my starter today. And when i did i noticed that on the front of the trans theres a spot for a starter

Notice the bump with the two bolt holes. Does anyone know what model would have the starter on the front of the c52? None come to mind for me.

[richee3]

Nice work on the porting!

[celica74]

Thanks. Next time in paying someone. Takes FOREVER! And youd be surprised as to how much you can take out on the exhaust side. The intake you have to be careful on the bottom of the ports, as the intake manifold bolt holes and the water jackets are already pretty thin.

[celica74]

Apologize for not posting any progress, honestly there hasnt been any till recently. Ring broke so i procrastinated for the longest time. Finally found some the other week and came in the mail this past saturday. Also, last friday car broke down. Ran compression test cyl read #1- 0 #2- 15 #3- 5 #4- 150 Pretty sure the head lifted. Anyways, got the ring i needed, bottom end is all ready to go. Head got sent off this morning and should be back friday hopefully. Meaning, saturday she'll be going in.

[SwissFerdi]

Good luck, brother in the joys of the 7A.

[celica74]

Motors in and running well. Think I need to back off the ignition timing and pretty sure fuel system is maxed. Got a 255lph about to go in and a regulator. See how that goes. She pulls very strong and is smooth. Pics later on. Getting exhaust taken car of right now and I'll get some videos taken.

[celica74]

Alright got lots of pics.
Finally got the rings i needed and got pistons and conrods in, also got oil pump on

Upper pan, baffle and pickup attached

Pulling the old motor, left all accessory's on except power steering. Just pull axles, disconnect wires and hoses, slave cylinder, fuel lines and some vacuum lines



Got the head resurfaced, i went with oem valves because i was sort on time and money, had them radius cut and a 30 degree back cut. SC mount was cracked so i had to weld that up. And when getting a new water pump on the 7a there are multiple part numbers dealing with the width of the impeller. Had a problem with it hitting the housing, went ahead and bought the pump with the housing. I would advise this even though it costs alittle more its less downtime.


Intake manifold installed and valve cover on.

Good view of how the SC is mounted. Pretty much just steel bar welded to make a frame for the SC to bolt to.


Spec stage 2 clutch and 8lb flywheel installed

Trans installed. Have someone help you, much easier to line up.

Engine bolted in place. What i did was remove front mount completely including bracket, unbolt everything from the rear mount and use the side mounts to line it up when dropping it in. Takes 30 min.

I also did some exhaust work. If you know what the ebay header for the corollas all the 7a guys use then you can see what i have done. After the header flange runners are about 3/4in to 1in diameter(too small to get good flow). So i opted for 1 1/4in pipe and extended them to the subframe to a 2 1/4in collector to a flex pipe, flanged it, then a test pipe for legal reasons. Vibrant resonator to 2 1/2in pipe back to a magnaflow muffler. After driving it it made a big difference mid and upper rpms.




As said before i need to back off the timing and upgrade the fuel system. So far Boost gauge has only read 5psi. Filter might need to be replaced. Have about 250 miles on it. Very fun to drive and very quick. Gotta love ZERO lag.

Build list

7a block bored .040 over and resurfaced
ross racing forged pistons
max speeding forged h beam conrods
toga bearings
toga high volume oil pump
8lb flywheel
spec stage 2 clutch
head fully ported and resurfaced
With the pistons, head and block resurface compression ratio is somewhere between 10.3:1 and 10.5:1
OEM valves radius cut and back cut
Vortec SC running 9psi pulley. Have to get a new intake pipe and filter, might have it set up for ram air and be able to put it back behind crash bar for when it rains
315cc injectors
2 bar map sensor


Once i get it broken in and all the kinks worked out ill hit the dyno to see when she can put down

This post has been edited by celica74: Mar 30, 2013 - 11:30 PM

[Takumi-FujiWaraS...]

Nice, did you ever contact delta about a grind?

[celica74]

Nice, did you ever contact delta about a grind?

No. Id like to get this setup worked out, engine management and get the fuel system upgraded before i go for cams.

[Takumi-FujiWaraS...]

Me either if i do before you i'll let ya know.

[SwissFerdi]

Epic.

[Tigawoods]

we need some video! not many supercharged celica's around

[celica74]

we need some video! not many supercharged celica's around

guarantee you wont find another SC 7a celi.

Me either if i do before you i'll let ya know.

unless your boosted and running the same comp and valves as me itll be a completely different grind. Ill have to look but im pretty sure id have to run 250-268 degree with 2.5-3mm lift. stock i believe is 222 and 2.11

[Takumi-FujiWaraS...]

You being boosted has nothing to do with them having or being willing to do grinds for the 7a. Most regrinds if you can get a company such as them to do it will offer more than one grind to meet different needs/applications.

al94st had a centrifugal supercharger setup on his 7a.
http://www.6gc.net/forums/index.php?showto...07afe&st=40

This post has been edited by Takumi-FujiWaraST: Mar 31, 2013 - 6:14 PM

[celica74]

You being boosted has nothing to do with them having or being willing to do grinds for the 7a. Most regrinds if you can get a company such as them to do it will offer more than one grind to meet different needs/applications.

al94st had a centrifugal supercharger setup on his 7a.
http://www.6gc.net/forums/index.php?showto...07afe&st=40

this setup use to be on his car i kindly took it off his hands

[PaddyTapps]

Radiator has been ordered, next bit is either valves or innovative wide band. Cant make up my mind where to spend $300 first.
Also got ben to come out to rockingham dragway with me. He did a hell of a job adapting for his first time out. That 3s flys. With the sc i only gained 3 or 4 tenths off my 1/4 mile. I didnt have the best launches so i know i can drop it down into the 15's.

I've been to Rockingham plenty of times back in the days before i joined the Air Force. Love that place!

[Takumi-FujiWaraS...]

Where you located in NC close to any of these tracks??? wilkes/WRP,farmington, shady side? all of which are 8th being SC shouldn't matter aslong as you can hook. Anyway If my "new" 7a is healthy after i get it done i'll be adding a 65shot it'd be fun to run em i've yet to see anything but 7th gens at these tracks.

[celica74]

I live in cary. Benson, fayettville, and rockingham are all within a hour hour and a half.

[PaddyTapps]

I'll be moving to Harrisburg early next year. Grew up in Winston-Salem, and lived all around Charlotte; at UNC Charlotte, Matthews, Indian Trail and Midland for a while. Going to be going to NASCAR tech once I get out of the Air Force!