Forum Register TCG Mobile Casino Live Posting Feed Garage Arcade Members List Calendar Search Today's Posts Mark Forums Read
Go Back   The Chicago Garage > The Garage > Automotive Discussions > 3800 Discussion

User Tag List

LinkBack Thread Tools Search this Thread Display Modes
Old 08-25-2016, 09:52 AM   #1
bs009's Avatar
Join Date: Feb 2014
Location: Michi-land
Posts: 137
Casino cash: $6184100
0.07 per day
Default L36 Fuel pressure regulator for turbo

Can I run the stock FPR from the Camaro with positive pressure in the intake manifold?

reason I ask is because I'm looking at the injector flow rate tables for the L36 car and my L67 Regal and noticed that the Regal's flow rate changes with vacuum, where the L36 is pretty consistent.

stock for Regal:

Stock for Camaro:

I adjusted the Camaro tables for my 80lb injectors, but I'm wondering if I need to change this one to adjust for vacuum or boost pressure.

Maybe I could just unplug the vacuum line from the FPR to keep the pressure consistent?
I've also heard the diaphragms on these can go bad or something with higher boost levels.
1982 Grand Prix Brougham: Turbo L36 powered goodness
2009 Silverado 2500HD: CC/SB 4wd, the car hauler
bs009 is offline   Reply With Quote
Old 08-25-2016, 09:57 AM   #2
jdredd's Avatar
Join Date: Jan 2014
Posts: 673
Casino cash: $10576200
0.34 per day

Switch to a L67 FPR so it has 1:1 pressure bump from the boost?

If you have a big ass fuel pump setup, you would be wise to switch to a bigger/better
aftermarket style regulator. To much flow from big pump will blow through it.

Few had this issue with the e85 450 pumps... switched to a Aeromotive or Magnafuel
regulator cleared it up.
2001 Turdbo Grand Prix GTP - [email protected]
Videos @
jdredd is offline   Reply With Quote
Old 08-25-2016, 10:07 AM   #3
bs009's Avatar
Join Date: Feb 2014
Location: Michi-land
Posts: 137
Casino cash: $6184100
0.07 per day

That makes sense then. I've currently got a walbro 255lph pump in the car, but the more I read the more it sounds like I should've gone bigger there. So that'll probably happen in the next year or so or if the Walbro fails.

Sounds like I'll need an aftermarket regulator then. I'll have to look around and see what's out there.

bs009 is offline   Reply With Quote
Old 08-25-2016, 10:12 AM   #4
The Midnight Sweeper
SleeperLS's Avatar
Join Date: Oct 2008
Location: Sandia Mountain
Posts: 10,775
Casino cash: $72179675
2.74 per day

I had an Aeromotive fpr and it worked perfect the entire time I had my car. Would recommend.
2010 Toyota Tundra 4wd SR5 TRD Offroad
2017 Can Am Maverick Max X3 XDS

SleeperLS is online now   Reply With Quote
Old 02-21-2017, 12:53 PM   #5
bs009's Avatar
Join Date: Feb 2014
Location: Michi-land
Posts: 137
Casino cash: $6184100
0.07 per day

So I'm looking at finding a way to put this together now, and it looks like my only real option here is to modify the factory fuel rail since I'm using the injector holes in the intake instead of where the L67 cars have theirs.

I will probably find a way to remove and weld up the hole for the regulator and maybe put an aftermarket regulator on the return side of the rail.

for reference, here's what the f-body rail looks like:

Before I buy an extra rail and spend the arm and leg on the regulator and its special fittings, are there any better options?
bs009 is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 09:15 AM.

Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0
User Alert System provided by Advanced User Tagging v3.0.6 (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
no new posts