i have a 98 integra gsr. i was wondering if i were to swap my valvetrain, camshafts, pistons, rods, etc, (all the internals) with jdm type-r internals. will my gsr be faster than a type-r or about the same. will i get more out of usdm type-r or jdm type-r internals on my gsr. thanks.

 

i would think but im by no means an expert......................can anyone give any input, got me curiouse now!!!!good luck

 

yea you should be....the gsr head gives you more compression from what i remember so youll be around 11cr??? i might be wrong but thats what i remember. goodluck

 

no you probably wont be as "fast" as a ITR. It might help if you also had the ITR's intake manifold, tranny, LSD, and less weight. also doesn't an ITR have a higher redline than a GSR so an ECU would be needed to take advantage of the higher redline you'll get from all the valvetrain upgrades.

One reason the JDM ITR's have more power than USDM ITR's is cause they operate under different conditions.

1) Japan has higher octane gas (I think)
2) In Japan you dont need catalytic convertors (I think)

I think that stuff might be the main reason why the JDM ITR's have more power than the USDM ITR's.

 

I think JDM ITR's make more power because

1)Intake manifold flows better
2)Higher Compression
3)Better fuel
4)Less restrictive ecu
5)The famous 4-1 header
6)Supposedly the JDM cams are a little more aggressive (not sure on this one)
7)Stronger intake valves to support the 9000 rpm rev limit (not sure on this one)
8)JDM Final drive
9)Recaro seats are lighter?
10)JDM Front end is cool