I have read through some thread talking about the difference between the jdm gsr and the usdm itr. Im planning on build the jdm gsr (low compression) that i have in my integra for boost. I have a jackson racing superchager that i will be using. Are the parts between the usdm gsr and jdm gsr and usdm itr interchangable? I plan on using oem rings, bearing, and gaskets. block internals idk if i should buy the gsr or itr parts. I want to use eagle rods and 81mm cp pistons. Headwork i was planning on using gsr arp headstuds, itr valvetrain, itr cams or skunk2 cams, and oem parts. Can anyone show me there build that they have done? Any informatin about this will help, all the thread i have read never clearly say if you can use gsr or itr internals in the jdm gsr.

I have a complete jdm gsr and itr shortblock with rods and pistons in it. Friends have told me to build the itr and put the head on it...

thanks

 

i know the rods are diff length(gsr vs ITR) and pistons have diff dome height other than that all parts are the same in the SHORTBLOCK

 

the rods are the same length. everything aftermarket is basically interchangeable between the two.

 

hmm well on eagle rods website they show diff lengths???? sorry for wrong info then

 

Thanks so far on the info...will the itr valvetrain be interchangeable? If not I plan on getting skunk2 and selling the itr

 

yea all valvetrain (idk about the valves them selves) springs, reatainers will interchange and cams will as well but if u plan on running anything over 01 spec ITR cams deff want upgraded valvetrain

 

JDM GSR and ITR are the SAME block..... the rods are identical, the crank has same stroke but more counterweights, pistons are different, and the head is different (b16a head) the valves and all valve train are interchangeable, but the ITR head does have a mild port and polish from factory, and obviously the cams are different, and the exhaust valve springs are dual instead of single on the GSR, b16a head.

 

Thanks

 

So if I purchase eagle rods for a usdm gsr. They will work in my jdm gsr block? I wanna make sure before I go buying parts and them not fit

 

yes it will fit