Re: Bypass fuel pressure regulator systems
 

Oh, and by the way, I'm done talking about this now. As I said previously, I sought out the counsel of many helpful, experienced racers, both on and offline. I have received a number of responses and based on those responses, my specific combination and the price of the parts, plan to give the system a try. If in your opinion, I'm an idiot, take comfort in the fact that I'm spending my money, not yours. Thanks very much for weighing-in on the subject.

Re: Bypass fuel pressure regulator systems
 

Actually YOU did...
The reason why the unnamed "very recognized people in the sportsman ranks" are PMing you is because they can't defend their nonsense claims!

Next, if not a tenth/1MPH how much? Half a tenth and half a MPH? Doesn't matter, the addition of a bypass on your regulator makes exactly ZERO additional HP which means your car ain't running any quicker/faster than it's typical swing from pass to pass on any given day. Last, I never stated you're an idiot nor do I care what you do with your $, time and car.

Re: Bypass fuel pressure regulator systems
 

Some things never change....sad. Please allow the gentleman to do as he pleases with his car, making blanket statements about something of which you don't currently race is merely your opinion. I'm sure he is aware of your thoughts on the subject. I've had many PM's on different subjects for the exact reason we are seeing here.

Re: Bypass fuel pressure regulator systems
 

please inform me how offering advice on an internet forum stops anyone from doing what they want with their car.

Re: Bypass fuel pressure regulator systems
 

Mr. 1320 racer, you have beat this subject to death....please go to Timeout. Regards, MJ.....

Re: Bypass fuel pressure regulator systems
 

Ed, your advice and personal experiences were acknowledged by the OP. Leaving it there would have been a good idea, not calling folks out that may have messaged the OP to save the verbal aasaults. Just because someone doesn't share your views or ideas doesn't make them wrong or guilty of spreading "nonsense claims"...it's their advice or opinion. The possible difference being they chose not to argue about it on this forum. This over whelming urge to always be right and for your answer to be the only good one is what's led to your, shall we say sebatical from this site on more than one occasion.

Re: Bypass fuel pressure regulator systems
 

talk about what you know, not what you think you know. I had one short sabbatical from this site and Ken told me "it never should have happened"

Again, will somebody that claims they have improved their car's performance on the track by just adding this bypass to their regulator, please enlighten me how a pair of -3 hoses plumbed into a regulator makes additional HP, enough HP to run quicker and faster as evident on the time slip!

Thank you in advance.

Re: Bypass fuel pressure regulator systems
 

I really thought hard as to whether to post on this subject but I thought some might be interested in my findings:
During the first 2 to 3 seconds of a run using a Q-Jet, fuel pressure to the carb is never constant no matter what fuel system you have! During launch the Q-Jet inlet valve actually closes multiple times for as much as 1/4 of a second at a time. The reason is the fuel in the bowl is pushed to the back of the bowl (by G force) and that is where the float is. At the same instant the G force acts on the fuel in the line supplying the regulator causing the fuel pressure to the regulator to go down by 5 to 10 psi depending on the G force and the length of the fuel line. At the time the inlet valve closes there is NO FUEL FLOW through the regulator without a bypass. At that instant pressure ratio across the regulator is varying wildly and the regulator mechanism is trying to cope. This does not happen with a Holley, only the Q-Jet due to its small, single bowl and float design.
That being said, will you notice a difference with a bypass? Only if you have a extremely well set up Q-Jet and multiple data logged sensors. The best Q-Jet set up for launch typically is not the best for the rest of the race. A racing Q-Jet setup is always a compromise. You'll have to try it and see. But you should test different setups.
The best thing you can do for a Q-Jet is to make sure your fuel system can refill the bowl as soon as possible and the carb bowl is as large as possible.
BTW the above info is for system that has a regulated bypass from the pump discharge to the tank i.e. a big pump. The pump is putting out constant psi and flow but the carb never sees it until G loads are stabilized.

Re: Bypass fuel pressure regulator systems
 

Very good info Vic. & right on.. I've had a customer or two that we routed a long lead line from the regulator to the Q-Jet. We used the Leave G forces to feed the carb through the line. I had them mount the Regulator way forward and the line runs back to the carb. I also used a .035 secondary bypass from the Regulator output line to the main by pass line( back to tank) this bled all the air out of the regulator to the carb line. I feel it kept air/foam out of the float bowl.
It really works well with Q-jet and 2 bbl carbs that are used on dirt tracks.

Re: Bypass fuel pressure regulator systems
 

Thank you very much for the excellent information, Vic. It is almost word-for-word the same information John Rademacher provided when attempting to convince me to buy the Product Engineering bypass regulator kit. At the risk of getting Ed Bigley stirred-up again, I will say that numerous other Q-jet racers have told me (in PMs) about findings very similar to Vic's. The bypass system "stabilizes" fuel pressure, particularly under high G-loads. Now, I will see if such stabilization translates to quicker 60-foot times, more consistent performance and improved ET and MPH. Thank you to all who responded. As I said in an earlier post, I will report my true and actual findings, once I get the car back out.

Re: Bypass fuel pressure regulator systems
 

it obvious that no matter how many tell you that all you'll see is a lighter wallet, the only opinions you are interested in hearing are those that agree with what you had already decided to do.

Still waiting for somebody that claims via pm to the OP that they have improved their car's performance on the track by just adding this bypass to their regulator, to please enlighten me how a pair of -3 hoses plumbed into a regulator makes additional HP, enough HP to run quicker and faster as evident on the time slip because without it, there is NO quicker 60 foots and ET regardless of what John tells him or you, those without the conviction to post publicly and engage in reasonable dialog stating your OPINION based on your belief and JUSTIFICATION for choosing to spend your $ on a regulator bypass.

Re: Bypass fuel pressure regulator systems
 

Dude, you don't get it all. We class racers spen all kinds of money on stuff just for the hell of it. If you are expecting logic, go to the Harvard College website.

(Tongue in cheek). 😄

Re: Bypass fuel pressure regulator systems
 

A REBUTTAL TO COMMENTS MADE BY MR 1320 ____As with many other aspects of each racers unique combination "some" will/might see an increase in performance, some may not and even some may see a decrease in performance by trying many "perceived" performance modifications to their existing setups !!! Strange how that works isn't it?? Anyway getting a consensus from the general racing community on "does it work" allows an individual to draw his own conclusion to the merits of whether or not to make a modification based primarily on others experiences. Vehemently blasting somebody's opinion because it does not go along with your own experience concerning the subject being discussed makes the person making the statement look in my opinion "asinine". Being almost forcefully over opinionated is not a good trait. The man asked what others experienced you offered the results of your experience and it runs counter to what some others saw. Let him draw his own conclusions. If it does not work for him do not call the guy an A -hole. He wants to try an experiment. He is merely asking the "pros and cons" of doing it. Now he can move on to the next experiment and see if that has positive results in the event this one does not produce the desired results. . You will not know what does/doesn't work unless you try.-- Personally in " my combination I feel that using a bypass had no negative effects !!!!!!! did it have any positive effects ? possibly but maybe a HUNDREDTH at the most if that, did I slow down? NO!!!!!! Was it worth the time/money and effort ??? Definitely!!!! So I guess you could call me an A-hole because I tried something that went against the grain in your opinion, correct???-- FED 387

Re: Bypass fuel pressure regulator systems
 

Jim and Mr. FED state my feelings on the subject better than I apparently have. Class racers try things; it is our nature, and the primary reason Stock and Super Stock cars keep going faster. There isn't an experienced racer in Stock and Super Stock that hasn't tried at least 10 ideas that simply didn't work. As many have said, some of these "silver bullets" have actually slowed their car down, which led to going back to the original configuration. And many times, things that don't work alone work wonderfully when another "ingredient" is added to the mix. That's what I call the "Combination Effect". Like Mr. FED said, what doesn't show anything in one combination can show a meaningful improvement in another. To find out, you try.

Re: Bypass fuel pressure regulator systems
 

so why ask if you're going to try it regardless of who says what? Answer...no matter how many tell you that all you'll see is a lighter wallet, the only opinions you are interested in hearing are those that agree with what you had already decided to do.

What do I know, my former Super Stock GT Firebird is quicker and faster than 99% that post here, has run a best of 8.72 @ 154 and 1.17 60 foot with a fuel system plumbed by Mike Pustelny using all Product Engineering components and NO bypass kit and my dragster has run a best of 7.18 @ 186 MPH without a bypass kit plumbed into it's regulator. Just imagine how much quicker/faster it would run with it.:rolleyes:

I try things too, have for over 25 years, what I don't do is ask opinions on internet forums of what I have decided to do with my car, my $ and my time.

FYI, for those that missed it a previous post here, I have also run a Q-Jet for many years back in the 90s, 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.

Re: Bypass fuel pressure regulator systems
 

Wanna compare dick lengths, do we? My car, also built by Pustelny, has gone 9.50s, with slightly more than half the cubic inches of your current engine. If your "former Super Stock car" ran 10.90s at 3900 pounds, mine should run 9.90s at 1000 pounds less. But wait, it's almost half a second quicker than that! But you know much more about how to make a QuadraJet car fast than I do, right?

Re: Bypass fuel pressure regulator systems
 

mine's bigger and I do!:p

Re: Bypass fuel pressure regulator systems
 

A 468 that only made 600 horse, maybe you DID need that bypass kit on that turd.Made more power than that with nearly half the cubes, and went 8.80's in an AX chassis car....big deal. You gave your response to the OP and he acknowledged it and actually thanked you. Beginning to see why the racers I've met that say they know you call you "Big head Ed" go figure. I'm amazed that you think your car having a faster E.T. means a damn thing to anyone but you, hows it fair to say a twin turbo small block on a 10 inch tire,,,, I can tell you. Not Good. Come join the ranks of lbs. per horse power, or lbs. per cubic inch and then tell us how fast your stuff is!

Re: Bypass fuel pressure regulator systems
 

your last three replies to this thread have been to me, not the op! Newsflash, this ain't my thread, answer his question or move on!

That said, I know what I know and what I know is my stuff is both quicker and faster than the OP's, yours and 99% of those that post here and somehow I do it without a pair of -3 hoses and a y block!

Oh and your claim that you met racers that "know" me and call me "Big head Ed" well if true, they obviously ain't friends and clearly jealous of my knowledge and my car's performance like you!:p

As far as "joining the ranks" I assume you mean the NHRA s***t show where you pay a premium for the privilege to race, yet are treated like red headed step children, forced to park in the weeds and the mud, be ready at a moments notice to race on a track/in conditions not safe and far worse than the typical test/tune day at your local track and best of all, race for purses/$ from the 1970s and we don't have enough bandwidth to go into all those racers who are cheating with illegal engines, body panels, etc. you know, the topics regularly discussed and debated for pages right here.;) Yet all some of you care about is seeing to it that DEEP staging stays illegal/not allowed. What a joke!

So those are the ranks you speak of? NO thanks, I'll pass as has most of my friends and competitors over the last 25 years!

Sooooooooo back to the topic... I'm still Still waiting for somebody that claims via pm to the OP, that they have improved their car's performance on the track by just adding this bypass to their regulator, to please enlighten me how a pair of -3 hoses plumbed into a regulator makes additional HP, enough HP to run quicker and faster as evident on the time slip because without it, there is NO quicker 60 foots and ET regardless of what John tells him or you, those without the conviction to post publicly and engage in reasonable dialog stating your OPINION based on your belief and JUSTIFICATION for choosing to spend your $ on a regulator bypass.

Re: Bypass fuel pressure regulator systems
 

Mr. Ed, first I did give an answer to his question, as did you. I think everyone has "moved on" despite the fact that you cannot because the majority doesn't agree with you. Second, never said those racers were your freinds..to be honest didn't see why they would admit to knowing you. Third I'm not in the least jealous of you, your car, or your so called knowledge. News flash, having an 8 second car with a HUGE engine in it these days is more common than a cold...so easy even you can do it. BTW making 1.** horse per cube is childs play so keep playin.....

Re: Bypass fuel pressure regulator systems
 

you haven't moved on neither has the OP as evident by your replies to my posts and as long as that continues, I'll continue to reply and I'll continue to ask...

for somebody that claims via pm to the OP, that they have improved their car's performance on the track by just adding this bypass to their regulator, to please enlighten me how a pair of -3 hoses plumbed into a regulator makes additional HP, enough HP to run quicker and faster as evident on the time slip because without it, there is NO quicker 60 foots and ET regardless of what John tells him or you, those without the conviction to post publicly and engage in reasonable dialog stating your OPINION based on your belief and JUSTIFICATION for choosing to spend your $ on a regulator bypass.


As far as my cars performance, the fact remains that my cars are quicker than yours and 99% that posts here so not so common around here!:p

Re: Bypass fuel pressure regulator systems
 

Will you two just quit?!?!! It has become nauseating.

Re: Bypass fuel pressure regulator systems
 

In the OP's original question, he was looking for "results" from 4 areas, not just ET/MPH. He also wanted to know if any had experienced steadier pressure or any annoying side effects.

I'm learning from Most of the people posting to this.

Re: Bypass fuel pressure regulator systems
 

So again...NO to steadier pressure, NO to additional MPH, NO to ET Improvement and the only annoying side effect will be his lighter wallet and the foolish feeling that will come over him for believing that the addition of two -3 hoses plumbed into his regulator would magically have his engine making additional HP, enought to show even a few hundredths in ET and MPH on his time slip.