Forced Induction Custom FI Setup Questions

Low compression Pistons

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Old Jun 18, 2004 | 05:07 PM
  #1  
green2ndgen's Avatar
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Default Low compression Pistons

hey, ive tried searching on this... didnt find anything though.

whatare the lowest compression pistons you have seen for sale and where can i get them? im aiming for 7:1, but around 8:1 would be fine. i have a b18a1 thats being stripped down and built. and this is the only part that im having trouble finding. thanks.
Old Jun 18, 2004 | 05:25 PM
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quadnie's Avatar
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Default Re:Low compression Pistons

I think that's a bit too low IMO

You could always just have your existing pistons shaved off the top.. they do that all the time with v8 pistons, called "reconditioned pistons"
Old Jun 18, 2004 | 05:33 PM
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Default Re:Low compression Pistons

Originally Posted by green2ndgen
hey, ive tried searching on this... didnt find anything though.

whatare the lowest compression pistons you have seen for sale and where can i get them? im aiming for 7:1, but around 8:1 would be fine. i have a b18a1 thats being stripped down and built. and this is the only part that im having trouble finding. thanks.
I had around 9.1:1 on my old motor and it was fast and response was quick.
Then I built the same motor with 8.1:1 pistons and i need a lot more boost to go as fast as I did with 9.1:1. Reponse also suffered.
Just my $.02

IMO 7.1 is too low.
Old Jun 18, 2004 | 06:13 PM
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Default Re:Low compression Pistons

i was recommended by my uncle to go with low compression, he said around 7:1. so thats why i was asking. hes been working with cars and ---- forever so i trust his word.
im trying to build a bullet proof turbo motor, so i wanna get forged aftermarket pistons. thanks for the input guys.
Old Jun 18, 2004 | 06:30 PM
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Default Re:Low compression Pistons

I would assume your uncle is from the old school running lower compression pistons with a roots blower sitting on top.

The guys around here know their ---- man when it comes to a honda, I would stick with something around 9:1 which is great for the boost. ---- Jeff was running like 11.6:1 with his TT LsVtec setup. All about the fuel managment baby.
Old Jun 18, 2004 | 06:49 PM
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Default Re:Low compression Pistons

with 7:1 its gonna be a major ------- pig down low and is way lower than necessary
Old Jun 18, 2004 | 07:28 PM
  #7  
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Default Re:Low compression Pistons

yeah, he was talking about how the first turbocharged cars had something like 5:1 and all that. thanks for the suggestions.
Old Jun 20, 2004 | 09:14 PM
  #8  
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Default Re:Low compression Pistons

9.1 is as LOW as I would go on a honda.. My GF has 9.1 pistons in her H22 and the thing is just a ------- dog NA.

I am personally using 10.1 pistons in my built setup.

Jeff
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