m20 overbore

[croqy]

i run an m20 325 sport with triple carbs i would like any info on what safe compresion limit i can go to with high compresion pistons, i would also like to know weather the m20 block can be bored out to 2.7 or larger obviously the compresion ratio would depend on the cc. I dont wish to use the 525e block because i want to stick to the shorter stroke, also are roller or steel rockers avalible for the m20 as i have had a new one break? thankyou for any feedback.

[Turbo-Brown]

You can get billet rockers, but they're veeeeeery expensive

No idea on the boring out though

Welcome to the forum!

[ed325i]

i would also like to know weather the m20 block can be bored out to 2.7 or larger

You cant bore it out to 2.7.