...stock MY99 EJ25?

thanks,

-wop

Do not quote me on that one but i belive it is 9.5:1.

Eugene

EDIT--and that's because I have a MY00 not MY99, yes I am a moron...

HAHAHAHAHAHA... no your not.

thanks guys I will go with 9.7:1

-wop

What makes the '99 2.2L motor a 10.0:1 compression ratio? My '97 2.2L is a 9.7:1 compression ratio. If I wanted the same compression ratio as the '99 2.2L, what changes would I have to do? Change the gasket, pistons, both? Thanks!

I was wondering how the '99 gained a little more horsepower and torque.

Without comparing part #s I'm not sure about the pistons, but the '99 is a Phase II (camcase design, much larger valves). I'll have both motors apart next week and I'll try to take some pics of the differances.

9.7:1

My owners manual says 10:1.

EDIT--and that's because I have a MY00 not MY99, yes I am a moron... :)

[ June 14, 2001: Message edited by: donjuan ]

'99 - 2.2L = 10.0/1
'99 - 2.5L = 9.7/1
2000 - 2.5L = 10.0/1

kevin i think it is the head design.

wow bill harvey is member #11!!! wow! :eek:
why did MY2000 CR jumped to 10:1?