7AGE Options

[sinner96ST]

it's not really a performance engine, so force feeding it puts more stress on stuff.

hence the reason for swapping in the more performance oriented GE heads. no?

right. but for the average person who doesn't know how / have the money to do the head swap, slapping on a turbo will always be the easier alternative.

i know of like 4 people total who have a 7AG(T)E, but i know of dozens who have turbo'd a 7a. the 7afte is just an easier way to do things, doesn't involve any hardcore mechanical apttitude, and can be done in a weekend.

the general concensus on the boards is that 8-10psi is safe for the 7a, and can be achieved using stock internals. if you really want more out of the engine at that point, it's time for a head swap, or a 3sgte.

This post has been edited by sinner96ST: Jul 20, 2006 - 3:32 PM

[hurley97]

yeah, thats why if im going to do it at all i'd save the money and do the head swap. im starting my research now so by the time i know what im doing i should have enough money for it first order of business was deciding to just turbo what ive got or go for the head swap, now that thats out of the way...

whats a safe psi range with the GE heads?

btw, WH95TE, i hope it doesnt seem like im hijacking or anything. im sure you could use all this info as well. have you decided which route your taking yet?

[pure_dx]

get ready to save a lot $$$$ then with the amount of money trying to build a 7agte, i could probaby have a 3sgte already, make that two 3sgte jk, but close enough

[Kwanza26]

yeah, thats why if im going to do it at all i'd save the money and do the head swap. im starting my research now so by the time i know what im doing i should have enough money for it first order of business was deciding to just turbo what ive got or go for the head swap, now that thats out of the way...

whats a safe psi range with the GE heads?

btw, WH95TE, i hope it doesnt seem like im hijacking or anything. im sure you could use all this info as well. have you decided which route your taking yet?

Didn't I just say the head doesn't matter in terms of reliability? Hmm... well... let me say it again... the GE head and the FE head are essentially the same design so neither is stronger than the other. The head doesn't take much psi punishment per-say... cause the block will blow before the head. Like I told nik back when he first started... the weakness of the 7AGTE is the 7A's wimpy rods. That's your number one weak spot in terms of the engine (7AFTE or 7AGTE) being able to hold a lot of boost pressure (15+ psi). Second to that is a close tie between fuelling and the pistons.

[Culpable04]

no more than 8psi is recommended, and even at 8, all precautions should be taken outside of the engine to prevent detonation. intercooler, proper tuning, colder plugs, retarded timing, all that jazz.

it's not really a performance engine, so force feeding it puts more stress on stuff.

How much HP can be safely obtain from a 7AF T E taking all the proper precautions ( doing it the right way ) ?

FOUND THE ANSWER !!


This post has been edited by Culpable04: Jul 20, 2006 - 6:56 PM

[sinner96ST]

no more than 8psi is recommended, and even at 8, all precautions should be taken outside of the engine to prevent detonation. intercooler, proper tuning, colder plugs, retarded timing, all that jazz.

it's not really a performance engine, so force feeding it puts more stress on stuff.

How much HP can be safely obtain from a 7AF T E taking all the proper precautions ( doing it the right way ) ?

http://www.6gc.net/forums/index.php?showtopic=29071&hl=

doGGy dyno'd and tuned a 7afte, those are his results on stock internals. keep in mind that he put a lot of time & effort in to his setup, and actually got it tuned & working correctly.

[nik]

yeah, thats why if im going to do it at all i'd save the money and do the head swap. im starting my research now so by the time i know what im doing i should have enough money for it first order of business was deciding to just turbo what ive got or go for the head swap, now that thats out of the way...

whats a safe psi range with the GE heads?

btw, WH95TE, i hope it doesnt seem like im hijacking or anything. im sure you could use all this info as well. have you decided which route your taking yet?

Didn't I just say the head doesn't matter in terms of reliability? Hmm... well... let me say it again... the GE head and the FE head are essentially the same design so neither is stronger than the other. The head doesn't take much psi punishment per-say... cause the block will blow before the head. Like I told nik back when he first started... the weakness of the 7AGTE is the 7A's wimpy rods. That's your number one weak spot in terms of the engine (7AFTE or 7AGTE) being able to hold a lot of boost pressure (15+ psi). Second to that is a close tie between fuelling and the pistons.

YEAH me and bee talked alot about the 7agte also thats why i bought pauter rods

[WH95TE]

Not hijacking at all hurley, all your questions are mine haha.

So, if I get the GE head id also have to get pistons and rods to run a good amount of psi when I turbo? How much would this cost and where would I go about buying them?

Also hurley, I havent completely decided where im headed with my 7a, theres a ton of options and im so confused.

engine swaps - Does any of this look good to buy? Seems to come with everything. Has a few 3SGTE's and 4AGE's

This post has been edited by WH95TE: Jul 20, 2006 - 11:16 PM

[jdg371]

So for the turbo.. what would be a quick spooling with good power lets say 250whp.. me and my brother are getting ready to build up the kp61 for autox.

[hurley97]

Not hijacking at all hurley, all your questions are mine haha.

So, if I get the GE head id also have to get pistons and rods to run a good amount of psi when I turbo? How much would this cost and where would I go about buying them?

Also hurley, I havent completely decided where im headed with my 7a, theres a ton of options and im so confused.

engine swaps - Does any of this look good to buy? Seems to come with everything. Has a few 3SGTE's and 4AGE's

yeah i was getting around to posting a topic like this of my own when i saw your post

good idea getting started early (i see your a fairly new member). i was going to leave my car pretty much stock, then i drove a turbo'd celica and im hooked

i wont get around to doing this for a looooong time but any info i find i'll post up, it'll be helpful for the both of us.

i would think its a good idea to buy an entire 4AGE and pick it apart and take what you need. or if you decide to just swap in the 4A you can do that too

[SinisterWhisper]

What 4age heads would be the best for such a hybrid? Do all of them work or only certain years? I ask because the 5sgte can only be done (without modifying the water jackets) on certain years.

[SAMIAM]

so im a newbee into forced induction on our cars.. i bought a turbo kit this past weekend. i want to put it on my 7afe but as it happens ive got a 89 corolla gts beater car with a 4age in it.......hmmmm should i swap the heads out during the turboing?help me please!!

[ExSane]

Yeah Stephen, I was thinking about doing a 7AGE 20v Silvertop project but I remembered that 4AGE mainly focused upon mid-high end torque. I don't know but I'm thinking about just turbo charging my 7AFE after a full rebuilt becuz I just love that low end torque.

[presure2]

just as a side note...doggys setup dynoed around 200hp at the flywheel...~ 185 or so at the wheels.
you guys are all talking about the head...when you should be talking about the bottom end...the pistons and rods will go long before you kill anything in the head.

[hurley97]

i think someone said something before about changing out the rods (too lazy to read it again ) might as well just drop in a 4A and turbo that, what do you need from the 7A that the 4A doesnt have? damn ST's

less than 200 to the wheels is not really worth the time/effort to me...im just in the 'giving up hope' stage of thinking

[Culpable04]

just as a side note...doggys setup dynoed around 200hp at the flywheel...~ 185 or so at the wheels.
you guys are all talking about the head...when you should be talking about the bottom end...the pistons and rods will go long before you kill anything in the head.

That's what I'm looking at, I think 200 HP is good enough for me,I don't wanna race it I just wanna have a car that perform the same way it looks.

[nik]

i think someone said something before about changing out the rods (too lazy to read it again ) might as well just drop in a 4A and turbo that, what do you need from the 7A that the 4A doesnt have? damn ST's

less than 200 to the wheels is not really worth the time/effort to me...im just in the 'giving up hope' stage of thinking

All about the rods and a full build up on a 7agte

http://www.6gc.net/forums/index.php?showto...&hl=7AGTE&st=60









This post has been edited by nik: Aug 1, 2006 - 2:14 PM