Bypass fuel pressure regulator systems

[1320racer]

Actually I do.

My car is a former super stocker built by the best, MPR, that now has a 900+HP BBC bracket engine under the hood that accelerates it well into the 8's and it's a safe bet I've made more passes down a 1/4 mile than most class racers over the past 25 years.

Back to the OP's question... -8 in and -8 out feeding a Holley 850. Just had the bypass kit laying around for years so I finally decided to put it on.

[JHeath]

Key word is..."former super stocker" ,but you are not a class racer, as usual, your opinion is irrelevent.

[1320racer]

says the guy who barely runs in the 10s

[Ed Wright]

1320 is correct. Won't hurt, but won't run any faster unless it had fuel supply issues before changing to the bypass set up. Adequate fuel in the bowls is all the carb cares about.

[nhramnl]

Again, thanks to all. I'm running a Q-jet combination and spoke with John Rademacher about the bypass setup when I sent the car's Product Engineering pump back for a rebuild. John's contention is that because of the Q-jet's very small fuel bowl, the bypass system is critical, since it assures a consistent supply of fuel. I don't believe I had a problem before, so I'm not really expecting a major gain, but I was curious if any of you guys that installed the kit (even with a good performing existing system) saw anything.

[1320racer]

FYI, I ran a Q-Jet for many years atop my 600+HP at the time, 468 BBC, running as quick as high 10's with it in my 3900 lb. Chevelle. No PE pump, regulator or bypass. Ran a Malllory Comp 140 pump, filter and dead headed regulator and no issues what so ever.

[junior barns]

What if there is a by-pass at the pump? Is it still needed at the regulator?

[buzzinhalfdozen]

Originally Posted by Ed Wright

1320 is correct. Won't hurt, but won't run any faster unless it had fuel supply issues before changing to the bypass set up. Adequate fuel in the bowls is all the carb cares about.

This covers it, "unless it had a fuel supply issue".In a later post the OP stated he had "beer foam" at the carb, seems that would indicate a problem. Seeing as you already purchased the regulator why not just install it and see if it clears up your issue? As you stated not every car is the same, nor does every car respond the same to changes. Good luck on what ever you decide and please let us know what you find out. Joe

[nhramnl]

I tend to agree with Joe's post. I will probably install the kit and will definitely post the results (positive, neutral or negative). Just as it can be installed, it can also be removed if it does nothing, or hurts the car. There are people (some of them very recognized in the sportsman ranks) who say the kit does help in many (but not all) cases, so I'll look at it as an experiment.

[1320racer]

Well Mike, I for one would like to hear from these "very recognized people in the sportsman ranks", what their definition of "help" is and IF by help they mean their car/your car has/will run quicker/faster, then I would like them to explain how by the addition of just a regulator bypass, your engine/ their engine magically made or will make 20-30 or more additional HP, which is what's required with the cars/engines discussed here to show an improvement of a tenth and 1MPH on the time slip.