Low compression pistons

[Bart GTTI]

New poster! (less than 10 posts)

I just got myself some low comp pistons. To see what the difference was I held the original pistons and the new low comp pistons beside eachother.
Seems that the only difference between these two is that the low comp pistons are 1 mm lower in the center than the standard pistons.

I don't know why, but I thought that the difference would be a bit bigger...
Is this be thé differnce between 17 psi and 28 psi??

Has anybody run on that much psi with low comp pistons??

[THE MASTER]

E=mc2
innit

[Bart GTTI]

Say what??!!

For example: would it be possible to make your standard pistons lower/flatter? Or would it be best to just make the middle a bit lower?? (am I making sense?)

[jantheeven]

Ik snap er geen reet van

No just kidding... you're making sense, but I'm not sure if what you're saying is a good plan. Ask the big fish like Scoff, James5 etc.

[sega]

New poster! (less than 10 posts)

Used to run 28psi daily. It all depends on how good your engine has been build and how much cash spend on balancing, cooling,...

[Rob@Backyardracing]

Say what??!!

For example: would it be possible to make your standard pistons lower/flatter? Or would it be best to just make the middle a bit lower?? (am I making sense?)

You can just take the crown off the std piston to lower the comp. I dout you would want to go lower than a flat top, seems a waste of power to me, 1.5hp (wheel) ever point dropped??? correct me if im wrong..

[raj]

as mentioned, you can simply get the piston crowns machined off. this is what ive had done to my new std pistons and polished the tops to a mirror finish

ive only done this to compensate for the head being skimmed

[jantheeven]

Ik snap er geen reet van

No just kidding... you're making sense, but I'm not sure if what you're saying is a good plan. Ask the big fish like Scoff, James5 etc.

or Raj...