 7AFE, ENGINE ISSUES |
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 Jan 25, 2004 - 8:25 PM
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Enthusiast  Joined Aug 30, '02 From San Juan, PR Currently Offline Reputation: 4 (100%)  |
Well, I said an opinion, my brother...if you and your little boyfriend didn't like it, that's too bad...and it'll be a reality...if you guys don't do research...REAL research first, you'll waste the money and manhours...and an H22 powered CIVIC will come by and smoke your little booties  Haha this is cool...I feel like a pre-schooler writing this 
-------------------- Past - 7A-FTE: Will never forget you
Present - 3rd Gen 3S-GTE: Swap in progress QUOTE (SinisterSinner @ Dec 19, 2009 - 10:52 AM)  I dont want to even think of turbos, they blow up way too often... |
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Jan 25, 2004 - 8:45 PM
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 Enthusiast Joined Nov 26, '03 From McKenzie, TN Currently Offline Reputation: 0 (0%) |
Yeah, and u sound like a pre-schooler writing it too. Hehe, j/k. Sorry, but I couldnt resist. Nothin personal oobe.
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Jan 26, 2004 - 12:03 AM
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Enthusiast Joined Jan 22, '04 From bellingham, WA Currently Offline Reputation: 0 (0%) |
ah yes, looks like you've chosen the mature route on that one.... good job buddy also.... if you go back look at what is engine specific and is a waste of time & money (according to your opinion)... the rebuild (big deal, not really a waste..... you can easily gain lost compression) 4a-fe pistons (part of the rebuild, the oem parts can be cheap) thinner head gasket (part of the rebuild) underdrive pulleys (can easily sell those to other 4/7a-fe owners at slightly lower cost) and the header..... now all of that, isn't going to cost ALL that much.... the rest is preperation for what's next on the car (either 20V 7a-ge or possibly 7a-gte)..... and also, not everyone is building their car to beat an h22 powered civic in the straights......  and to be honest, seeing how there are so many 4/7a-fe owners that are building their car for some sort of high revving n/a application (his original intent) you won't find much at all in terms of "research"..... most owners are way too cheap... so in essence, it's somewhat uncharted territory..... also, an H22 civic would take a 7a-fte celica as well, so you really can't say much in that department... i'm willing to bet you've spent quite a lot more on your turbo setup... and seeing how you keep bringing up if one can beat you or not, you seem to care about it.... |
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Jan 26, 2004 - 11:12 PM
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Enthusiast Joined Aug 30, '02 From San Juan, PR Currently Offline Reputation: 4 (100%) |
Get over it, my brother...all that baba you wrote is useless...if it hurt you what I wrote (seems like it) bid deal...go eat some Cheetohs or something, hehe, don't get bothered by what I said. It's your opinion, I respect it...you're good to go...here's a lollipop.
-------------------- Past - 7A-FTE: Will never forget you
Present - 3rd Gen 3S-GTE: Swap in progress QUOTE (SinisterSinner @ Dec 19, 2009 - 10:52 AM) I dont want to even think of turbos, they blow up way too often... |
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Jan 26, 2004 - 11:29 PM
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Enthusiast Joined Aug 30, '02 From San Juan, PR Currently Offline Reputation: 4 (100%) |
Haha, no problem, man 
-------------------- Past - 7A-FTE: Will never forget you
Present - 3rd Gen 3S-GTE: Swap in progress QUOTE (SinisterSinner @ Dec 19, 2009 - 10:52 AM) I dont want to even think of turbos, they blow up way too often... |
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Jan 27, 2004 - 5:08 PM
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 Enthusiast Joined May 17, '03 From Florence, KY Currently Offline Reputation: 0 (0%) |
That is a turboed 7age that he's talking about. The guy put it in an MR2. |
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Jan 29, 2004 - 1:56 AM
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Enthusiast Joined Jan 20, '04 From TN Currently Offline Reputation: 0 (0%) |
club 4AG
click on --------------tech reference then click on ---------5age/7age theres a good bit of info on the 7age frankenstien motor and how well 7afe parts hold up. hope this helps later |
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Jan 29, 2004 - 10:24 AM
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 Enthusiast Joined Aug 29, '02 From Dallas, Tx Currently Offline Reputation: 0 (0%) |
The biggest problem I see is that the 7a manifolds will not work on the 4a head. The intake could be a problem. Getting sensors to switch over could be tricky. You'd almost certainly have to use the 4a ecu (or a standalone) to realize any power gain. The 4a head flows better but its not going to make a lot more power until you get the air moving faster (i.e. higher rpm). The stock 7a rev limiter on my car is at 6750, not 6200 or something as many of you have suggested. I suggest that you don't pay too much attention to the tach needle as its not very accurate. I've heard several people suggest that the stock 7a bottom end will live just fine at 7500rpm. This suggests to me that a properly built and balanced bottom end (but no really trick parts) could live to 8k. At that point you really have the potential to make some power with this conversion.
This post has been edited by SpedToe169: Jan 29, 2004 - 10:40 PM |
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Jan 29, 2004 - 2:46 PM
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Enthusiast Joined Jan 22, '04 From bellingham, WA Currently Offline Reputation: 0 (0%) |
with using a smallport head, you will have to do one of the following (in preperations of us doing the motor swap in my car we came across this issue but got lucky, we think)
you will have to use high ohm injectors from a smallport or use the stock high ohm injectors if you plan on using the 7a-fe ecu..... luckily we're finding that the injectors on my smallport (we believe are the 250CC) are high ohm and we won't have to worry about that for now... |
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Jan 30, 2004 - 12:56 AM
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 Enthusiast Joined Dec 26, '02 From Alabama Currently Offline Reputation: 2 (100%) |
please clear this up for me: is the small port the blue top or the red top? Or is it just a edition of one of them? I also asked what TVIS was a while back and never saw the response.
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Jan 30, 2004 - 1:14 AM
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Enthusiast Joined Jan 22, '04 From bellingham, WA Currently Offline Reputation: 0 (0%) |
smallport is the redtop (aka latemodel as well)....
TVIS is toyota variable induction system, or something like that... it was controls over the amount of air it let in and at certain rpm's it would open a valve (or something to that affect... i'm not 100% sure to be honest).... |
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Jan 30, 2004 - 10:42 AM
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 Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
To elaborate... Basically TVIS (Toyota Variable Induction System) is a series of butterflys built into the Intake manifold, between 2 runners per single cylinder (8 runner intake manifold... Honda has a similar system on the RSX's K20A1). At certain throttle positions, the sensors tell the engine whether or not to open the butterflys and allow for more airflow. The idea behind restricting the airflow from the intake is to create a better broader torque band. At WOT or hard throttle, the butterflys open completly for maximum air intake... All of the early model bluetops (large port head) had TVIS, while it was eliminated in the early 90's in the late model redtops (small port head). There is a very large difference between the 2 engines... nearly every internal component is different. This post has been edited by Kwanza26: Jan 30, 2004 - 10:44 AM -------------------- "It's ok to be naked girl... I'm an artist!"
1995 AT200 Celica ST: stocked out daily driver... 1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies... 1991 SW2x MR2 n/a: bare bones hardtop model soon to be... |
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Feb 2, 2004 - 4:13 AM
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Enthusiast Joined Jan 22, '04 From bellingham, WA Currently Offline Reputation: 0 (0%) |
found some new info out this past weekend.... NOT all redtop 4a-ge's are smallports... and it's believed that the smallport only came in 1991-92 even though we got redtops from 89-92 (92 in the prizm gsi).....
so far for using the stock wiring and ecu the only problem we've run into is the TPS.... the project has stopped for now, but we're going to start running without it and see how it does..... |
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Feb 2, 2004 - 4:32 AM
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Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
Yeah... only the 90-91 Corolla GTS and Prism LSI are the later model high-comp redtops (small port) in the US... every single other one in the US were all the same as bluetops (bigport), regardless of them being black lettering or red lettering. -------------------- "It's ok to be naked girl... I'm an artist!"
1995 AT200 Celica ST: stocked out daily driver... 1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies... 1991 SW2x MR2 n/a: bare bones hardtop model soon to be... |
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Feb 2, 2004 - 10:59 AM
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Enthusiast Joined Jan 22, '04 From bellingham, WA Currently Offline Reputation: 0 (0%) |
from what i've heard.... that's bad info... there ARE bigport redtops....... the smallport is labeled off of the block it has...... it's not 100% clear, but there are bigport redtops in the US..... i know this because the guy helping me with his swap, his wife has an 89 corolla GTS with one...... i'd have to ask him, but he's thinking that smallports came only in 91....... and supposedly there have been several debates online about this on other boards.....
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Feb 3, 2004 - 12:25 AM
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Enthusiast Joined Dec 26, '02 From Alabama Currently Offline Reputation: 2 (100%) |
what came in the old school MR-2's that weren't supercharged?
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Feb 3, 2004 - 12:31 AM
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 Enthusiast Joined Aug 30, '02 From Michigan Currently Offline Reputation: 0 (0%) |
MK1 MR2 N/A: 4A-GE
MK1 MR2 SC: 4A-GZE MK2 MR2 N/A: 5S-FE MK2 MR2 TC: 3S-GTE MK3 MR2: 1ZZ-FE --------------------  Believer, you'll leave her, in leaving them all No but I don't buy it Like anything you do, as anyone you are Cause I'm... Ten Speed, of God's Blood & Burial |
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Feb 3, 2004 - 1:59 AM
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Enthusiast Joined Jan 22, '04 From bellingham, WA Currently Offline Reputation: 0 (0%) |
the mk1 mr2 had a bluetop bigport 4a-ge....... |
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Feb 3, 2004 - 1:07 PM
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Enthusiast Joined Dec 27, '03 From Nor Cal Currently Offline Reputation: 0 (0%) |
No... I'm pretty sure. I have a 90 Corolla GTS in the driveway as we speak... redtop 7 rib block... non-TVIS smallport 4AGE... -------------------- "It's ok to be naked girl... I'm an artist!"
1995 AT200 Celica ST: stocked out daily driver... 1984 AE86 Corolla GT-SR5: silvertop 20V 4AGE project car jacked up with goodies... 1991 SW2x MR2 n/a: bare bones hardtop model soon to be... |
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