'm planning to get either those. Basically both are bolt-ons and ready to go without tuning. Which will have more power, a greddy at 6psi or JRSC with 6lb pulleys? JRSC seems to be a bit cheaper than a greddy with IC and upgraded fuel pump. Just wants to know which one will give me more power. Anybody have experience with either for the GSR. Dynos would be nice on the Greddy kit also. Advice will be greatly appreciated. and no I don't want a Drag or revhard or custom make a turbo kit.

phat

 

If it's going onto a GSR I would say go with the JRSC. From what I understand the gears are pretty short on a GSR and that wouldn't be too good for a turbo. If you get a JRSC and you want to go more boost you can just change the pulley in it and run like 15psi so it can make as much power as a turbo.

 

well a greddy turbo kit will probably give you less power than th JRSC but the greddy is made with top notch quality so you probably won't have to many problems really with it not saying the JRSC isn't built with quality it is theres no doubt in that. but if your looking for more power i say go with the JRSC

 

I think you should consider that your talking about two completely different modifications here. You will have a much different powerband as well as different positives and negatives with each choice, your not simply comparing brands.

The JRSC has always been a solid performer. I've heard rumors that Oscar Jackson no longer owns the company and that there has been reliability issues with the products, but in my personal experience, I haven't seen it. A Eaton SC like the JR kit uses will give you full boost almost off idle so you will get a much bigger powerband. Basically it will feel like you have a larger engine, including measurable gains to the low and mid range. That said, the high rpm racing power won't be as strong as a turbo. You can increase the boost, but most people don't go above 8-9 psi (stock is 6 I believe) and I don't believe the SC is even capable of doing 12 psi or above. It would probably heat the air so much that it would be almost pointless anyway without intercooling. I know a few people who have had the JRSC on a '99 Si and a '96 hatch/B18C1 hybrid, both running around 8-9 psi. Both ran 13.7 consistantly and had no reliablity problems aside from worn clutches. They also had a lot of igntion retard and they both wanted water injection kits but never bought them. The guy with the Si now owns a GS-R with a custom built turbo too.

The Greddy kit is a good unit. I've only seen one on a '00 GS-R with the large optional front mount intercooler. The quality seemed top notch but I didn't spend much time with the car. The only issue I had with the Greddy kit is it's fuel managment. The kit comes with 310 injectors and a black box/piggy back computer to help control them. I don't think 310's are honestly big enough or the black box can provide enough fuel. Case in point, the '00 GS-R cracked his #3 cylinder wall and broke the ring lands of that piston. From what I've heard he was beating the living crap out of the car and didn't even have a boost gauge installed. Regardless of his experience, with proper gauges and a little brains, the kit could be reliable. As with any turbo, to quote Nick "it's not if somethings going to break, it's when". Your going to be pushing almost twice the stock output from the engine in a method it was never designed for, you will eventually break something. That said, turbo's will offer a tremendous amout of potential for power. You will have to wait for the turbo to spool and it will give you a much richer high rpm powerband rather than all over, but it will be a lot of fun. Besides, turbo's let you get all the fun bits like intercoolers and blow off valves. If you ever decide to push even further, a turbo will be much easier to go to the next level with too, it's just some new internals, a little mroe boost and some new fuel managment away.

My vote? Turbo and budget yourself about $1000 extra for a new clutch, a boost, oil pressure and EGT (exhaust gas temperature) gauges and make sure you do a good quality install. It won't last forever, but it will be a fun ride. Seeya.

 

How about, NEITHER. If your gonna spend that kind of $$ you may as well get a Procharger, http://www.procharger.com/honda.shtml. More hp than either kit, they claim to have the easiest install of any honda forced induction system. Im not sure the $$ of it they havent priced it yet but im sure it will be as expensive as the JRSC and much better quality. Just my 2cents.

 

Ive been waiting for that "procharger kit" as long as I been waitin for the "EnDyne kit"..... If they ever release the endyne kit Im on it like stink on sh*t! www.theoldone.com <---- Take a peek

 

Greddy quality...nuff said