I ordered the J's cf intake last week, but a friend is selling his JRSC from his R for a hell of a price. My question is, would the intake work with the supercharger? I'm not sure if it will even fit with the blower manifold sitting so much lower. Should I just sell the intake.

Here I am trying to sell the damn car, and I can't seem to stop spending money on it

Thanks,
Jerry

 

this is a good question that i've been wondering about since i have the J's already and have considered a JRSC. I figured that since the intake manifold is lower than the stock and the J's is such a tight fit already that it wouldn't work easily. Perhaps with modification?

 

I hope your decision to buy a JRSC doesn't hinge on the fact of whether or not your J's whale ***** will fit...

 

not at all, I'm just hoping I can use both, I really have no problem with selling the J's.

Anyone else tried this?

 

The JRSC throttle body is 45 mm lower than the stock ITR position. GSR intakes tend to fit better. As for my AEM, it had to be cut and modified to fit properly, while the AEM for the GSR will fit without modification.

I doubt a j's racing c/f intake will fit on a s/c setup on the ITR. Even if it did, on a roots blower you really are better off with a custom made CAI with the straightest possible path for cold air. Under high boost, intake temps can be an issue. With a hacked CAI at 5.5psi I ran 160 degree intake temps, and 179 on a short ram. Just make a template for a pipe, buy some aluminum piping, and have a place mandel bend it to your template for a much lower cost then the J's and with better gains. That just my .02


If anyone has a j's racing in the NE area, and can lend a few minutes of time, come visit me so we can setlle this for sure.

 

I was told that the CAI for the jrsc causes the supercharger to work to hard, and that the short ram is the best to use. Is this a true statement?

 

No.

 

no it doesn't fit.


I tried to mount it in my EK with a jrsc b16 and it was way too tight, mainly because the intake is lower. I think it would be the same in a DC chassis.

 

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Well done, good answer, way to contribute.




FWIW, the J's has a different fit for everyone. Mine fits no problem whereas others have problems with fitment. My car isn't supercharged but I would imagine that since the tb sits lower with the JRSC the J's wouldn't fit without some type of rigging. IMHO you are better off with an intake that is more flexible (like the oem intake tube) or easier to deal with than CF. At least with an AEM style intake you can use couplings to get a good fit. Once you cut the J's it finished.

 

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Any veterans please correct me if I'm wrong, I never want to post anything that isn't factual:

I don't recall reading this anywhere, but FWIW, the JRSC (and pretty much any motor, not sure about turbo however) will always benefit from the best free flowing intake air and exhaust gasses.

The CAI does require the motor to work slightly harder to pull the air through the tube (which is the reason for the loss of low end torque), but the benefit of the colder intake charge is well worth it, especially at higher RPMs. With a shorter intake arm, the motor has to work a lot less to pull in the (warmer engine) air (which is why it's slightly more responsive), but at the cost of increased intake temps.

Of all the JRSC research I've done and articles I've read point to the shorter intake arms as working the best overall for JRSC applications.

There is also a really good thread here on H-T that has a volume of excellent information that you should check out (had you searched first, you probably would have found it) and since I'm in a nice mood, I'll post it for you.

https://honda-tech.com/zerothread?id=1214810

Enjoy.

 

I'm not sure anyone has done a definitive test on which intake is best for a jrsc'd R. It's hard to accurately dyno the benefits of a cold air intake because you need to have the hood closed and simulate air movement under the car as if it's moving. I've never done to that trouble.

I have both a short ram intake and an aem cai that's cut to fit. I've daily driven and tracked both extensively. The short ram definitely yields quicker throttle response. On a hot 90+ degree summer day, the IM is cooler to the touch with the aem, but I have not measured the actual temps. The hondata IM gasket also makes a noticeable difference in IM temps.

I only run 6-6.5 psi. Higher boost levels that produce more heat would probably benefit more from cooler IM temps and a cold air intake.

Unless it's blazing hot at the track, I like to run the short ram. On real hot days, I'll switch to the aem. I'd like to say my decision to run one intake over the other is based on testing or data, but it's really just a wild-*** intuitive guess. The temperature difference at the IM can be measured, but I'm not aware of any data that goes the next step and shows the net effect of the higher IM temps. Does a 10 degree drop in IM temps equate to 1hp?