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Re: More dyno testing results. (long).. 120-130 67

posted by  someone claiming to be Kermit on  Mon Oct 29 07:53 CST 2001 [RELATED]

>>Took off the adj. fuel pressure regulator.....and guess what? saw

> another 1 hp increase at nearly every rpm, with less drop off after

> peak.

> ... threw the stock mech. one back in, which is leaking gas and oil.

>Looks like I need to find another mech one and see what that gets me.

For what it's worth, an electric fuel pump with a pressure regulator set @ 3.5 lbs, is worth 2 full seconds a lap at the old-layout Texas World Speedway over the stock mech. fuel pump in my G-production Spitfire. Regulating it to 2.5 Lbs w/eletric pump was better than stock, but not as good. 3.5 lbs is higher 'than the book', but races do more and better maintenance, and you should get the carbs set to handle the higher pressures.

I autocrossed that car with the stock mech. set-up for years without any problems, but racing is different.





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