Boosted 4afe
02-25-2008, 09:37 AM
#11
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Join Date: Feb 2008
Posts: 9
Re: Boosted 4afe
Originally Posted by myAE86turbo
y not run a 7afe with a 4age head? you'll have more displacement and you can still claim that it's not a 4agte setup. anyways, things get too complicated when you try to do something different when it comes to toys. You're better off settting up a 4agte/3sgte with everything known to man to keep it together and you'll be satisfied. i think your pride of doing a "usual" setup will do you in, in the long run. anyhow, if you proceed with your plan...run the early model GZE pistons. they have a lower comp ratio at 8.0:1.
Will just go make calculations to see wat c/r I'll be left with using the 8:1 piston!Thanks for that hint!
02-25-2008, 09:49 AM
#12
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Join Date: Oct 2004
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02-25-2008, 01:40 PM
#13
3.0 BAR
Join Date: Jun 2005
Posts: 2,753
Re: Boosted 4afe
All these damn foreigners!! first you take over our country, now your going for our message boards? lol just ------- with you, but i have no clue what your talking about. i got the flu and a couple of beers has made me happy.
02-25-2008, 03:09 PM
#15
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Join Date: Feb 2008
Posts: 9
Re: Boosted 4afe
Originally Posted by Snafubmx234
02-25-2008, 03:23 PM
#16
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Join Date: Feb 2008
Posts: 9
Re: Boosted 4afe
Originally Posted by myAE86turbo
y not run a 7afe with a 4age head? you'll have more displacement and you can still claim that it's not a 4agte setup. anyways, things get too complicated when you try to do something different when it comes to toys. You're better off settting up a 4agte/3sgte with everything known to man to keep it together and you'll be satisfied. i think your pride of doing a "usual" setup will do you in, in the long run. anyhow, if you proceed with your plan...run the early model GZE pistons. they have a lower comp ratio at 8.0:1.
Thanks again!
02-26-2008, 02:38 AM
#17
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Join Date: Feb 2008
Posts: 9
Re: Boosted 4afe
Originally Posted by Big Pipe
i tried boosting a 90 corolla with the 4a-fe back int the day. first trip around the block it shot the number 1 piston out of the block. good luck
02-26-2008, 08:35 AM
#18
1.0 BAR
Join Date: May 2005
Posts: 539
Re: Boosted 4afe
Lol @ ^^^ , sounds like you got a good build goin on there man . I have been running the 10
c/r for the last month and a half just fine. Blew the head gasket last weekend. Not as a result of the boost , but a leaky radiator . Didnt the 4ag and 4af pistons differ ? Dished vs concaved ? You had better make sure before you swap them in . I will go look at some later to make sure . Like a said earlier you got a good build going there, sounds like you took the time to do some research.
c/r for the last month and a half just fine. Blew the head gasket last weekend. Not as a result of the boost , but a leaky radiator . Didnt the 4ag and 4af pistons differ ? Dished vs concaved ? You had better make sure before you swap them in . I will go look at some later to make sure . Like a said earlier you got a good build going there, sounds like you took the time to do some research.
02-26-2008, 04:07 PM
#20
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Join Date: Feb 2008
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Re: Boosted 4afe
Originally Posted by evo_lucian
Lol @ ^^^ , sounds like you got a good build goin on there man . I have been running the 10 c/r for the last month and a half just fine. Blew the head gasket last weekend. Not as a result of the boost , but a leaky radiator . Didnt the 4ag and 4af pistons differ ? Dished vs concaved ? You had better make sure before you swap them in . I will go look at some later to make sure . Like a said earlier you got a good build going there, sounds like you took the time to do some research.
c/r for the last month and a half just fine. Blew the head gasket last weekend. Not as a result of the boost , but a leaky radiator . Didnt the 4ag and 4af pistons differ ? Dished vs concaved ? You had better make sure before you swap them in . I will go look at some later to make sure . Like a said earlier you got a good build going there, sounds like you took the time to do some research. Anyways the 4agze (supercharged) have bigger combustion chambers thats why using its pistons will leave me with a higher c/r than their known for.Like I mentioned in a previous post the 8.9:1 4agze piston is EXACTLY the same as my 9.5:1 4afe piston so a 8:1 4agze piston will leave me with just bellow 8.5:1 c/r.
The bad news is you don't get 8:1 4agze pistons anymore!
I don't want to go for copper headgaskets as its unreliable so all thats left is shortening the conrods!Doing that I'll be compromising the Toyota's wonderful HIGH REVING ability.But I guess you can't always have the best of both worlds hey!?
