New JR FPR is in...

[Holden]

Thanks Jim.

I guess I'll stick with what I've got until someone determines it's a problem or creates a "solution" that improves performance.

Greg

[lundgren]

CivicR: Now I'm sure Mark Allen will have his JRSC R at SCCA solo 2 nationals in a month. I think I'd give him a run for his money in SM if I could get REALLY high spring rates on my car. He'll tow his car to the event, I'll drive mine, but he's a good driver. Cannot wait to see what a JRSC Integra with a FULL race suspension will do, and if I have any chance of keeping up.

------------------
http://www.netbsi-kc.com/integra/
http://www.netbsi-kc.com/aa/
http://www.groupbuycenter.com/

[rjaffey]

Here are my observations from the work I've done with my 94 GSR's fuel system:

The outlet from the fuel rail, the JR adaptor plate, and the inlet to the OE regulator are all about .25" diameter. The valve (or whatever you want to call it) in the OE regulator is where the restriction lies. Looking into the OE regulator's outlet, all the way to the back, the passage reduces to somewhere in the .10" range. By tapping into the adaptor plate and rerouting some fuel around the regulator, I can dial the pressure way down.

Right now I've got the baseline pressure set to 35psi combined with Venom 320cc injectors.

[JRCivic]

Rafe... excellent !!! How is the car running, particularly at the vaccuum changeover and high in the rev range ???
Any hesitation... bog... mushy throttle response ???


------------------



'93 Civic Si H/B with B18C1, JRSC @ 8psi
Best 1320: 12.68 at 110 mph

[Turismo]

Jim.

I put a B18B regulator off a 91 teg on and it dropped the fuel pressure @8psi.

Just another option.

[rjaffey]

Jim,

The car runs great. It starts easily, the idle is smooth, the transition to boost is fine and the high end power is there. Get this: The car runs best when the MAXIMUM fuel pressure is around 45psi! If it's over 50psi the power goes down noticeably and the A/F goes *all* the way rich.