Are Itr Parts Good...

[99IntegraGSR]

I have a 99 GSR and I want to get a turbo. I would run low boost at first but eventually I would want to increase the boost? What kind of aftermarket parts are good to reinforce your engine? What about ITR parts? And are there any sets of pistons out there that will allow me to lower my compression so I can run more boost?

[F23A4Racer750IL]

u could get an ITR crank pistons, cams. but if u want lower compression the GSR has lower compression than the USDM ITR and the JDM ITR.

[whtteg]

You won't want to use anything from an ITR if you plan on going turbo.

[F23A4Racer750IL]

there would be no problem using a type-r head. type-r pistons would be pointless. and ive seen people use type-r cranks in there gsr's.

[whtteg]

Originally Posted by F23A4Racer750IL

there would be no problem using a type-r head. type-r pistons would be pointless. and ive seen people use type-r cranks in there gsr's.

That wold be a wsate of money though. You would gain almost nothing and you would have to change the cams in the ITR head b/c they wiould not be as well suited for turbo as the stock GSR cams, or turbo cams would be best.

[liquidflame8]

if i were you i'd just get the rods because they're stronger but if you want to run a lot of boost you should just get eagle rods and pistons. you could get the itr head but just get it bare and put your gsr parts. it would be port and polished but i don't know if you could get your gsr head pp'd for cheaper than the head costs.

[whtteg]

Originally Posted by liquidflame8

you could get the itr head but just get it bare and put your gsr parts. it would be port and polished but i don't know if you could get your gsr head pp'd for cheaper than the head costs.

Sorry buddy but that will not work. You have to have the ITR intake manifold, the GSR intake manifold will not fit the ITR head. Also yoiu would want the ITR throttle body as well, b/c it would be just dumb to put on a better flowing head and leave a smaller more restrictive throttle body on there. Leave the GSR head on there and invest in some P&P work.

[boosted331]

Originally Posted by whtteg

That wold be a wsate of money though. You would gain almost nothing and you would have to change the cams in the ITR head b/c they wiould not be as well suited for turbo as the stock GSR cams, or turbo cams would be best.

Saying ITR cams are bad for turbo, or even that GSR cams have too much duration to run with a turbo is a load of shit. The TURBO CAMS that crower makes have more duration than the GSR cams, or the ITR cams. This is just like people ranting about rod-to-stroke ratio bullshit that they know nothing about, saying that LS/vtec motors are bad because they have a bad rod-to-stroke ratio. Give me a break.

[whtteg]

Originally Posted by boosted331

Saying ITR cams are bad for turbo, or even that GSR cams have too much duration to run with a turbo is a load of shit. The TURBO CAMS that crower makes have more duration than the GSR cams, or the ITR cams. This is just like people ranting about rod-to-stroke ratio bullshit that they know nothing about, saying that LS/vtec motors are bad because they have a bad rod-to-stroke ratio. Give me a break.

The crower turbo B series VTEC cams have the same intake duration as the stock GSR and slightly more duration on the exhaust cam, but they have a substantial amount more lift. And they have a lot less duration as the ITR cams. And I said nothing about the gsr cams being bad for boost, I said that the ITR cams will not be as well suited as the GSR or a turbo cam. If you really knew what you are talking about then you would know that a higher lift cam that does not increase the duration will be better for a turbo application than a cam that has increased duration and a small amount of increase in lift. The ITR cams have too much duration for the amount of lift for turbo IMHO. And what I was really trying to get across was that the ITR head would be a waste of money, he already has a VTEC head and there is no need in changing to a head that was further geared towards N/A. Rather the best thing to do would be to port and polish the GSR head. It would flow better and would be cheaper. And for the bad r/s comment, people do have a misconception about it. The reason people say it is bad for LS/VTEC is because they would like to have a motor that will last a reasonable amount of time while revving to the upper rpm range. Now I agree that the r/s is not that bad on a LS motor compared to a GSR the LS is 1.54 and the GSR is what 1.56. Not a big difference I agree. But side load is still increased a small amount, which as we know will lead to more wear on the cylinder walls and rings. Personally I prefer the B20 block with a B16 crank and rods, almost perfect r/s and still good displacement.