Increasing Compression

[bazza]

Originally Posted by oab_au

No mate there is only 0.060" between the piston and the head, so you can't push them up any more. Shaving the heads is not the go as it will need adjustable cam pulleys to keep the timing right.
Higher comp pistons would be the best.

Harvey.

Can you please this number, is it from a tech manual or from your own measurements?

[oab_au]

Originally Posted by bazza

Can you please this number, is it from a tech manual or from your own measurements?

No mate that was a 'round about' measurement.

Harvey.

[bazza]

Originally Posted by oab_au

No mate that was a 'round about' measurement.

Harvey.

Hahah okay. Tony and I are just figuring out how much larger we can make the piston (up top) to bump up compression.

Also noticed a lot of cams are slightly open by up to 1mm ATDC... makes things tricky. A question we have to ask ourselves is do we go high compression or do you go for overlap or a mixture?