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Old 03/19/2018, 04:43 PM   #1 (permalink)
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Honda pistons in 4g64

Was just curious if we are able to use oversized k20 pistons (86.5mm) in our block. I have a buddy who has a set of forged pistons that he is giving me. just wondering. planning on doing a turbo build soon, would be a good start.
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Old 03/19/2018, 09:02 PM   #2 (permalink)
Stage 1 SDS @11+ psi
 
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Old 03/20/2018, 12:06 PM   #3 (permalink)
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why wouldn't it work though. the bore size would be the same and the wrist pin size is the same (22mm). the only thing I would be worried about is piston to deck height. any input? I just want an explanation as to why, not just a straight up "no".
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Old 03/20/2018, 01:15 PM   #4 (permalink)
Stage 1 SDS @11+ psi
 
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Originally Posted by Ozzyr41n View Post
why wouldn't it work though. the bore size would be the same and the wrist pin size is the same (22mm). the only thing I would be worried about is piston to deck height. any input? I just want an explanation as to why, not just a straight up "no".
Really? You are asking me why "no"?
Come on, man.

Ok, I'll play. So what wrist pin you plan on using, Honda's or Mits? Then which rods? It's got to be Mits to fit to a Mits crank. Will the oil flow properly through the oil ports? And what about the valve reliefs? Will they match? etc etc etc There are so many variables to consider with what you are suggesting. Check into EVO parts.
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Old 03/25/2018, 12:01 PM   #5 (permalink)
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Is not worth it. I've done it with clients for N/A high compression engines. It's better to use H22 pistons. For boost just buy the right forged pistons
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