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Boosted 4afe

Old 02-25-2008, 09:37 AM
  #11  
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Default 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.
I will definately consider using the 8:1 ratio piston.The plan was to use the 8.9:1 piston as their EXACTLY the same as 4afe exept for forging and ceramic coating.Thats why I still used 9.5:1 as c/r guideline
Will just go make calculations to see wat c/r I'll be left with using the 8:1 piston!Thanks for that hint!
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Old 02-25-2008, 09:49 AM
  #12  
USS
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Default Re: Boosted 4afe

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Old 02-25-2008, 01:40 PM
  #13  
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Default 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.
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Old 02-25-2008, 01:47 PM
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Default Re: Boosted 4afe

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
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Old 02-25-2008, 03:09 PM
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Default Re: Boosted 4afe

Thanks for the link bra.Congrats on a job well done!You still on same boost or raised it in meantime?
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Old 02-25-2008, 03:23 PM
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Default 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.
According to my calcs.My c/r will be 8.5:1 using the series1 ZE pistons.Will definately consider them instead of the series 3 ZE.
Thanks again!
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Old 02-26-2008, 02:38 AM
  #17  
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Default 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
Sounds like the typical result when proper research wasn't at the order of the day!
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Old 02-26-2008, 08:35 AM
  #18  
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Default 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.
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Old 02-26-2008, 03:38 PM
  #19  
USS
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Default Re: Boosted 4afe

Originally Posted by Ewie
Thanks for the link bra.Congrats on a job well done!You still on same boost or raised it in meantime?
No problem. I no longer have the car, sold it 2 years ago.
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Old 02-26-2008, 04:07 PM
  #20  
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Default 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.
Thanks bra,I'm trying hey!LOL
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!?
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