Author Topic: fuel pressure regulator placement:  (Read 159 times)

Offline Stewart G Griffin

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fuel pressure regulator placement:
« on: October 29, 2018, 05:14:41 PM »
i heard/read that fuel pressure regulators should be located as close as possible to the carb.  If so, why? And, how close is close?  Is the firewall good?  Fender?  Or right on the intake?

a) If on the intake, then could i get some mounting ideas?

b) Also, could i get some good gauge ideas?  i'd prefer one inside the cab(electric of course), but i'll mount a mechanical on the wiper cowl if necessary, because i don't have a whole lot of time.

c) The carb is a quadrajet, if that matters.  Really, i'm just trying to make sure i don't go above 6.5lbs., but really 4 would be ok.

d) i heard/read return lines should be at least at big as the main line.  Why?   i think with most gm carbureted cars, the return line is smaller than the main.

Offline csdineley

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Re: fuel pressure regulator placement:
« Reply #1 on: November 03, 2018, 12:10:41 AM »
 Why? I don't know the real reason. I did it to keep the rubber lines as short as possible.

  I mounted mine to a bracket I made and put it on the rear passenger side carb stud. Right in front of the Vac advance. Sorry don't have a picture right now.

A:  But I don't see why mounting it on the firewall or intake wouldn't work.


B:  Sorry can't help with gauges. I used a stand alone gauge to set it up. And haven't touched it since.

C:  My Carb is also a quadrajet   

D: Don't know either. I used the stock size tbi return. Don't know if the Tbi return is larger then the carbed ones.
« Last Edit: November 03, 2018, 12:12:34 AM by csdineley »
1987 V20 Custom Deluxe, Vortec 350, SM465,Np205 14Bff 3.42

Offline csdineley

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Re: fuel pressure regulator placement:
« Reply #2 on: November 03, 2018, 12:22:35 AM »
Best one I could find right now.
1987 V20 Custom Deluxe, Vortec 350, SM465,Np205 14Bff 3.42

Offline Stewart G Griffin

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Re: fuel pressure regulator placement:
« Reply #3 on: November 03, 2018, 07:15:39 AM »
Thanks.  Are you still using the TBI pump?

Offline csdineley

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Re: fuel pressure regulator placement:
« Reply #4 on: November 03, 2018, 02:57:27 PM »
Yes
1987 V20 Custom Deluxe, Vortec 350, SM465,Np205 14Bff 3.42