well the car i currently have i swapped out the 133k gsr bottom end for a 32k ITR block and my gsr head i just used CTR cams with rocket motorsport dual valve springs and titanium retainers with new valve stem seals..

from my searching a ITR block with gsr head should ield some where around 11:1 compression... when i did a compession test the numbers inorder from DIZZY to TIMING BELT side was 260 - 250 - 250 - 250 so the motor sounds healthy and runs fine.. i want to turbo this motor eventually and just turbo this motor now until i build it for boost later... but the higher compression worries me..

would this motor be ok with low boost with good tuning? or is that nto a good idean and just wait till i build the motor with slightly lower compression pistons..?

 

as long as you get it tuned properly for low boost you will be fine until you build the motor.

happy boosting

 

thats what ui was hoping.. maybe mroe will chime in with their thoughts as well.. thanx

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Turboaddict &raquo;</TD></TR><TR><TD CLASS="quote">as long as you get it tuned properly for low boost you will be fine until you build the motor.

happy boosting</TD></TR></TABLE>
You might throw in a head gasket for some safety factor.

 

a friend of mine is boosting 8psi on his JDM ITR motor with stock internals/hg. the higher comp ratio just gives the tuner less space to mess up. lower comp you have a larger margin of error. as long as you bring it to a good tuner, you will be fine on low boost.
good luck