People running FAST, VIC ,PRO FLOW ect intakes, return style fuel
04-01-2011, 12:01 AM
#31
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Thank you, I was under the impression you were talking about using the FPR as the T itself..Ok that makes sense now.. Would this function correctly, as far as bleeding off the excess fuel from being dead headed in the rails, rather then coming back into the reg from a pressurized source.. This would prob be the way I would go about it, any where in front of the reg i could tie into the line to add a FP gauge, then it would be no lines other then feeds to the back of the rails..
04-01-2011, 12:21 AM
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Well none the less, if the FPR works like a relief valve on a hydraulic system, then it should not be a issue as far as bleeding off fuel that way, a FP gauge should be able to be added anywhere that there is pressurization in the system.. That is a super clean way, i might have to go for it, it would save alot of time as far as making bends in hard line. Hell this should get a sticky spot, for anybody that might get a little confused as to a configuration.. Thanks to you guys for making this a bit more clear to me..
04-01-2011, 09:36 AM
#33
i just used a fuel rail from a 98 corvette on my fast 90mm. if i was to use the fast rails, i would just get the corvette fuel filter. it's around 40$ and has the fuel pressure regulator built into it. run to lines from the tank to the back side of the filter, then 1 line up to the motor. boom. return style for $40. it is the easiest, cleanest and cheapest way to do the job.
04-05-2011, 11:24 PM
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Thanks for some info here guys, but as far as it goes now, I am going to keep a truck intake. Number 1 on either one of the intakes mentioned, you will need to switch to a diff injector( not a truck style), as I have truck 60's, You will need diff style ones, and adapters to do so. So after adding up what all this would cost, intake, adapts, injectors, ect, it will be well into the 800 range.. So as of now, I will stick with my current, or poss step up to a tbss intake... 
04-06-2011, 08:26 AM
#38
Thank you.. Ok next ?? is do you see any trouble running the fuel into just one rail, crossing it over and returning it out the back of the other one into the FPR then to tank ?? It will be a cleaner look IMO but will it be suitable for big HP??? I am guessing yes do to the fact of a bunch of guys running the stock set up and big big numbers..Just saw this thread, seems like you got everything worked out even though it seems like your heading in another direction. Just thought I'd add that from what I've read, nobody can really prove one way or another if using a crossover at the rails or "Y'ing" the fuel supply lines into the back of the rails really makes any difference performance wise, but I've read a few reputable engine builders explain their theory with their reluctance to use the cross-over method.
From what I've gathered they claim that there is a noticable drop in pressure from the first injector (Ex: # 7) to the last injector in the series (ex #8) when using a crossover. So the last Injector would see whatever the FPR was set at (~60psi) but the first injector would see a 3-5 psi increase over that. Depending on which way you run your main into the rails, it could either help or hurt the #7 problem these LS engines are sometime prone too.
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