Looking to rebuild my gsr of 150k. Planning on a rebuild. I know CTR pistons create a higher compression, but how higher than ITR? Which ones will be a safer/better/reliable application for a n/a GSR? If you have done this upgrade give an example of the power increase. Thanks in advance people!

 

just threw in brand new itr pistons/bearings/rings and wrist pins all the block work was done and itr cams thrown in too. my cr is 11.2:1 and the motor pulls hard but i still have 98' gsr valves/springs/retainers so i shift at about 8k. my buttdyno says i got more rpms to go...

dyno charts come in 3/6, i kill 2dr gsr's and i have beatin a 14.4 sec. wrx by a bumper so if that helps...im a 4dr though

go with ctr's but throw i'd throw in a cometic hg.

 

i would throw in some jdm itr pistons for a more streetable compression with pump gas. ctr pistons would yeild to high of a compression like 12.1. U can also try using some p30 or pr3 pistons for 11.1+ compression. Any of these will definantly give u some good power. i would also upgrade to some arp rod bolts unless ur going to use some after market rods and have the pistons machined.

 

Keep this in your favorites, compression ratio calculator:

http://www.bojangs.com/calculator

 

Damn, the Integra forum has freakin good help. I was a hatch owner and got nothing but Crap! Good Help here!

 

im runnin full ctr internals in an ls block and i haveta use 101 octane because my compression is 12.6:1 and im untuned... id go jdm itr if u dont want to spend a grip on gas. they are indeed more streetable