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I just installed the JRSC on my 99 Civic DX HB.. Ok ha ha don't laugh.. It's pretty quick. So far I've smoked a few modded tegs with I/H/E who rolled up on me hehe http://www.hostboard.com/ubb/smile.gif No GSR's yet though..
But my question is what boost pressures are you getting at specific rpm's? Mines seem very linear:
1k - 1psi
2k - 2psi
3k - 3psi
4k - 4psi
5k - 5psi
5.5k to 6.75k - 6psi
This is for the Civic 6 psi kit. Vacuum/Pressure gauge Tee'd into stock FPR.
[This message has been edited by elmo (edited February 14, 2000).]
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Thats normal. It depends on how efficient your engine breathes, intake, exhaust. I am boosting 7-8 with the 6psi kit on my GSR. I would check into it if you were boosting radically more than what the kit is rated at.
Steve
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I have the 8 PSI pulley and I'm getting 9-9.5 but I don't have a header so I expect that to drop a tad once I have it.
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Silvino Orozco
'97 Integra GS-R w/JRSC (8 PSI), Walboro 255lph High pressure fuel pump , Filter on a stick air intake, Powerstop rotors/Axxis Metal Master brake pads, A'PEXi Dunk Exhaust, J&S Safeguard unit,NeuSpeed rear Swaybar, Eibach Springs, Clutch Masters Stage III clutch (installing soon), AEM cam gears (installing soon), Energy Suspension motor mounts (installing soon)
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I have the gsr 6 psi pull my boost gauge says 8 or9 psi and it fills good i order the 8psi pullykit i cant wait .95gsr
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Keep in mind you DON'T want a higher number here. You want to have a good header and exhaust system to let the air out as fast as you're forcing it in. If you're reading 8-9 on a 6, I bet you don't even have a good catback. Seeing 7-7.5 is normal though.
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Silvino Orozco
'97 Integra GS-R w/JRSC (8 PSI), Walboro 255lph High pressure fuel pump , Filter on a stick air intake, Powerstop rotors/Axxis Metal Master brake pads, A'PEXi Dunk Exhaust, J&S Safeguard unit,NeuSpeed rear Swaybar, Eibach Springs, Clutch Masters Stage III clutch (installing soon), AEM cam gears (installing soon), Energy Suspension motor mounts (installing soon)
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What I'm saying is that something is wrong and you shouldn't be seeing that high of a manifold pressure. That extra PSI isn't helping. If anything, something is hurting you and causing excess backpressure. It IS hard to believe you have all those components and are seeing that high of a manifold pressure. I'm not sayingyou're lying but I've never seen anyone have that problem with such items.
I just got another idea. Your boost gauge could be f'ed up.
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Silvino Orozco
'97 Integra GS-R w/JRSC (8 PSI), Walboro 255lph High pressure fuel pump , Filter on a stick air intake, Powerstop rotors/Axxis Metal Master brake pads, A'PEXi Dunk Exhaust, J&S Safeguard unit,NeuSpeed rear Swaybar, Eibach Springs, Clutch Masters Stage III clutch (installing soon), AEM cam gears (installing soon), Energy Suspension motor mounts (installing soon)
[This message has been edited by Silvino (edited February 15, 2000).]
[This message has been edited by Silvino (edited February 15, 2000).]
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Jasons, there is also some mechanical reasons that you have this condition... first, what kind of car do you have (year, make, model) ??? For instance, you could have a larger diameter crank pulley and this could be changing your boost pressures. It would be a good idea to measure your crank diameter... that is, the diameter of the grooves that are linked to the supercharger. Larger than stock would create more boost.
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'93 Civic Si H/B with B18C1, JRSC @ 8psi
Best 1320: 12.68 at 110 mph
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JASONS,
Excessive manifold pressure can also be caused by incorrect cam timing.
elmo,
I'm not familiar with the Civic system but it sounds like you're car might be missing some boost down low. I'd think you should see close to 6psi by 3K RPM.
[This message has been edited by rjaffey (edited February 15, 2000).]
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SO WHAT YOUR SAYING is that a higher number no good ihave aem cold air intake dc header tanabe racing med vitect wires jr fuel pump ngk cooper plugs
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rjaffey..
Are you serious? The Civic system uses the m45 blower. I believe the teg system uses the m62 blower? Would this make the difference?
If not I believe a slipping belt would cause thi, but the belt is nice and tight... about 1/2 inch of deflection vertically between the top pulley and crank pulley.
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I have the Integra LS kit (with the M45) and I see 5psi @ 3K
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Hey .. I took the air box cover off.. I'm still using the stock box. I went for a road test and now I get 4PSI at 3k. Looks like the stock box is restrictive. I may have to cut some holes in the cover to get more volume. It was way louder too!
I spoke with Keith at JR. He's not quite sure but there is a possibilty on the DX's, they may boost lower because of the TLEV rating. >shrug< I guess he's going to try and find out.
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I HAVE A 95 GSR integra i put the silencer in my exhaust that could be the back presure that your talking about . i also have that surging feeling that your talking about below 5000 rpm or beteewn 3500 5000 rpm i have been having this problem since last summer but i didnt know what it was and still dont IF YOU CAN HELP PLEASE DO
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You should expect better answers than mine, but I think you are going lean momentarily. I think this is called "lean surge".
Other people have had this.
Going by the age of your kit, I'm guessing your pressure switch is an old one that doesn't activate until 3psi boost. The new ones activate at 1psi boost and will keep the mix richer under mild boost/mid rpms.
Anyone else have better info?
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Greg Holden
96 GSR, JSRC, Walbro regular pressure pump, AEM cai,
RSR headers, Greddy PE, Brembo Cross-Drill rotors,
DC Sports Rear Strut Tower Brace (junk!), Yoko AVSi
Greg Holden's JRSC Install Site
