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Discussion Starter #1
Aight I was wondering if the pistons from rpw would make a dramatic improvement on performance of the vehicle most likey my 1.8 L I remember when we put some forged pistons in the mach 1 they helped ALOT. I was wondering if they would improve performance noticably. I know you could probably run higher BOOST and MORE NOS shot. thankz[:(!

Silly Ricer, Hondas are for kids!
 

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All by themselves, pistons do nothing. they would not add HP, or take it away. (assuming you stick with the stock compression and design).

Yes, if you go with lower compression pistions for turbo, then yes, they would be MUCH better than stock.

Leave it to Random to Needlessly complicate things.
 

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Discussion Starter #3
Lower compression pistons as in shorter pistons than stock pistons?

Silly Ricer, Hondas are for kids!
 

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The lower compression pistons would be more "dished" than the stock pistons.

They'd look like a cereal bowl <img src=icon_smile_big.gif border=0 align=middle>.

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I gotta find me a set of those then!<img src=icon_smile_big.gif border=0 align=middle>

Silly Ricer, Hondas are for kids!
 

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guilty-
If you are not turbo or supercharged, then no, you would not go with lower compression pistions. You would go with either stock shape that is stronger...but the stock tibby pistions are good to 250 WHP...so you should not need them NA.

If you are going turbo...then yes, they are needed, as the stock pistions suck balls for design/materials for forced induction.

Leave it to Random to Needlessly complicate things.
 

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Basicly the top of the piston determines the compression character of the piston. Dished pistons (the surface of piston is bowled out) creates a larger combustion area equalling less compression. Flat top pistons decrease the combustion area and therfore increase the compression. Domed pistons take that a step further. Throw a firecracker into wharehouse and you get a pop. Put that same explosion in a capped coke bottle things get intresting. Some N/A NHRA cars can and do run 15 or 16 to 1 compression rations through the use of domed pistons. Using forced induction is the same as increasing the compression. You simply FORCE more air into the combustion chamber through the other end. When you see lower compression pistons in a turboed car that is because they are using the more efficient turbine to fill the gap. Under load the pressure in the combustion chamber will really be much higher than 8:1 or 9:1. More likely 12 to 16:1.

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