JRSC in the near future, I need your input please

[green95gsr]

Hi,
I'm buying a JRSC for my '96 gsr. I'm pretty excited about it but I would like to hear from people who have them. I want to hear issues that might be a problem and how to address them now, at the very start. So I won't be redoing crap that's weak or troblesome. I plan to stay at around 6 p.s.i.
I'm installing the fuel pump too, as well as an A'pex VAFC. I'll also have the A'pex 4-2-1 stainless header, the Greddy Sp cat back, an Iceman intake and perhaps a boost gauge.
I know that the idler pulleys on the JRSCs are a POS, I've already had experience with them in my Miata. I intend to put a decent, steel pulley in my car. I also have heard about problems maintaining belt tension for the blower. I would like to hear about that too. Principally, I want to hear good solid, first person experience, particularly with solutions. Oh yeah, I am going to get the manifold port matched to the gasket / head.
Thanks for your help,

Manuel

[Holden]

I installed in January.

Check out my site.


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Greg Holden
96 GSR, JSRC, I/H/E, yada yada yada...
My JRSC Install Site

[green95gsr]

Thanks Holden, you've detailed a lot of your adventures (misadventure?). How's the car running now? Did you go to 8 psi? I'm not sure whether you are 6 or 8 psi. My blower is on it's way! It'll probably be installed by the first of June.
Besides the water leaks, did you find anything else wrong with the S/C kit itself? I realize that the fuel delivery problem is a related item. I know that those AFPRs can be a pain in the butt. I'm going to try to tune the fuel delivery with the A'pex VAFC. Do you think the JR fuel pump is adequate? Also, should not the stock injectors be enough for 200-250 flywheel h.p.?
Thanks again for your input. You are the only one so far to tell me anything, and I've posted this question to 2 boards already. I would have thought that more people would have helped. Oh well.....

[Turismo]

I instsalled mine at the end of last year and have put a little over 7K on it.

I love it, although it seems slow compared to when I first put it on since I'm used to it now .

I think it's a great bolt on product although I think the fuel-timing adjustments JR uses are marginal at best and reflected in their price for the kit. Don't get me wrong, it works, it's just not the "correct" way to it in my opinion. This is why some of us are trying different options to create a near perfect fuel/timing solution.

I would still highly recommend one if you like the simplicity of the setup and linear power delivery.
I will admit a turbo can make more power but it's above what I'm willing to get myself into.

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'96 JRSC GSR Sedan (Black Currant Pearl)
AEM CAI / PMS / J&S Safeguard / Vortech Fuel Rail / Autometer Boost/Vac, Fuel Pressure (Dual Pillar) / Walbro HO Pump / Billstien Shocks / H&R OE Sports / Skunk2 Rear Swaybar / 3pc DC Sports Tie Bars / Bridgestone RE-71 Potenzas

[Holden]

The only things wrong with the kit itself were the flawed manifold and the too-long bolt and unneeded spacer for the lower sc support bracket mount.

My car is at 6psi and is kicking ass. I have almost everything perfect (IMHO).

Good luck with yours.

Greg

[civicboy]

Most people are using bigger injectors, adjustable fpr instead of stock Honda/Acura regulator, cartech or vortech fmu and the walbro high output (pressure) 255 lph pump. Run the bigger injectors to lower the fuel pressure at full boost. Use the adjustable fpr to lower the fuel pressure at idle so that you're not too rich. Get the cartech or vortech fmu (adjusts onset of and rate of gain) for better tuning/elimanation of tip-in detonation. The bigger fuel pump makes sure that you have enough fuel for sustained on boost runs. Don't get the fuel pump from Jackson. It cost too much there plus they sold me the 190 lph. It was too small for my Civic. I got mine (255 lph ho) from the car guy mentioned on Holden's web page. Good customer service. I can't remember his name. Apex VAFC should be awesome for fine tuning. I have not had any trouble with pulleys/belts. Good Luck.

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95 Civic SOHC VTEC,JRSC,255HP fuel pump,RC 270cc,Split Second A/F meter,Greddy exhaust,Ground Controls,Tokico Illumina,rear ST swaybar,Nuespeed f&r upper bars,GAB lower f bar,f&r camber adjuster,Powerstop rotors w/ Porterfield pads, shogun power tuner soon

[green95gsr]

Thanks again for the input. I hear that about the fuel delivery shortcomings, that is why I ordered the A'pex VAFC. What do you all think about using the VAFC to fine tune the fuel delivery?
BTW, they used a Mickey Mouse patch for the Miata too. A resistor in the air temperature sensor to fool the computer into running rich. In the later kits they added some sort of pressure switch to make the resistor part of the system at some boost pressure. As far as I know this is not a good fix and the more experience installers just throw the pressure switch away and wire the resistor in. The set up with the resistor and timing set conservately works pretty well, but I (like most people) could not leave alone. I added the AFPR and an MSD timing retard unit. The idea was to advance the static timing and the MSD would take it out as the boost developed (2 deg per pound of boost up to 6 degrees). The idea with the AFPR was of course to refine the fuel delivery. The end results were less than satisfactory. The MSD and the AFPR affected the idle very negatively (had to uninstall the MSD). The AFPR was of very dubious help. I think the simple resistor worked best with the timing adjusted to eliminate ping. The biggest problem Im had was that thecar ran too rich too much and a lot of black soot covered the back of my white car

Manuel

[green95gsr]

Thanks civicboy, I'll keep it in mind. The kit I got includes the JR fuel pump. I guess I could use that one. Do you think I should sell it and get another one? Also, I did use a Cartech AFPR in my turbo Miata and I also tried fine tuning the fuel in my "95 supercharged Miata with the JR AFPR. Frankly, I was not too impressed with either one. I guess the Cartech set up worked OK (never got detonation), but the MIata set up was pretty much a bust. I never was able to lean out the system at idle and enrichen it at the needed time I always had a lot of black soot all over the back of my white car (bummer). That is why I'm going to try to use the Apex VAFC. I guess maybe bigger injectors might help. I just don't want to start throwing more and more $$ to this car. Good grief, I've spent a bunch already!!

[CROM]

Well, I have had my supercharger on for a little over 15000 miles on my car.

I took my time installing it, took me two weeks about 2-3 hours a night messing with it to get it in. I made sure everything was done correctly.

And, I haven't had one single problem with my car at all. I drive it hard, drag race it a lot, and it is fine!

But be patient and make sure the install is perfeect!