Adjustable fuel pressure regulator recommendation please...
Race Director
Joined: Sep 2001
Posts: 14,682
Likes: 753
From: NEwhere Ohio
Hi PacerX
I just put on the Aeromotive Part # 13106 Adjustable fuel pressure regulator as part of my E85 fuel system build up this winter. Ive got about 500 miles on it.
$192.45 - from Summit Racing Equipment
I have a 93 corvette, but I am using a 1996 lt4 intake manifold and 94-96 fuel rails (they are different).
I put in bigger -8AN feed, -6AN return lines and twin fuel pumps (with second one coming on > 7 psi boost)
I have an in-cabin fuel pressure gage and found the fuel pressure regulator adjustment to work perfectly - allowing me to control the fuel pressure adjustment linearly with adjustment of its nut.
I *think* that part works with both style fuel rails (92-93 AND 94-96) but you may want to double-check. It included some extra parts for one or the other.
They also make a 13107 p/n - but I think that may be for Camaro LT1. Not sure . Dont quote me on that.
David
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 986
Likes: 487
Hi PacerX
I just put on the Aeromotive Part # 13106 Adjustable fuel pressure regulator as part of my E85 fuel system build up this winter. Ive got about 500 miles on it.
$192.45 - from Summit Racing Equipment
I have a 93 corvette, but I am using a 1996 lt4 intake manifold and 94-96 fuel rails (they are different).
I put in bigger -8AN feed, -6AN return lines and twin fuel pumps (with second one coming on > 7 psi boost)
I have an in-cabin fuel pressure gage and found the fuel pressure regulator adjustment to work perfectly - allowing me to control the fuel pressure adjustment linearly with adjustment of its nut.
I *think* that part works with both style fuel rails (92-93 AND 94-96) but you may want to double-check. It included some extra parts for one or the other.
They also make a 13107 p/n - but I think that may be for Camaro LT1. Not sure . Dont quote me on that.
David
I just put on the Aeromotive Part # 13106 Adjustable fuel pressure regulator as part of my E85 fuel system build up this winter. Ive got about 500 miles on it.
$192.45 - from Summit Racing Equipment
I have a 93 corvette, but I am using a 1996 lt4 intake manifold and 94-96 fuel rails (they are different).
I put in bigger -8AN feed, -6AN return lines and twin fuel pumps (with second one coming on > 7 psi boost)
I have an in-cabin fuel pressure gage and found the fuel pressure regulator adjustment to work perfectly - allowing me to control the fuel pressure adjustment linearly with adjustment of its nut.
I *think* that part works with both style fuel rails (92-93 AND 94-96) but you may want to double-check. It included some extra parts for one or the other.
They also make a 13107 p/n - but I think that may be for Camaro LT1. Not sure . Dont quote me on that.
David
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 986
Likes: 487
Drifting
Joined: Jan 2021
Posts: 1,313
Likes: 384
From: Northern California
Thanks - AJ
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 986
Likes: 487
You could mock it up real quick and confirm before you finished bolting it all together.
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Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 986
Likes: 487
No idea what folks are doing.
I would imagine a shorter screw might be possible but would then wonder if it has enough length to get the adjustment you need.
Drifting
Joined: Jan 2021
Posts: 1,313
Likes: 384
From: Northern California
It's a fair question. I have two reasons I went this way. 1) the OEM ones w fixed spring pressure on the FP diaphragm have been known to deteriorate / vary as to actual fuel pressure allowed, and B) it allows me to manipulate pressures in the future for upcoming changes in injector fuel flow rate, intake porting, head swaps, etc. I can dial in exactly what I would like for a given future modified tune or components.
Safety Car
Joined: Mar 2017
Posts: 4,206
Likes: 1,325
From: LeClaire Iowa
It's a fair question. I have two reasons I went this way. 1) the OEM ones w fixed spring pressure on the FP diaphragm have been known to deteriorate / vary as to actual fuel pressure allowed, and B) it allows me to manipulate pressures in the future for upcoming changes in injector fuel flow rate, intake porting, head swaps, etc. I can dial in exactly what I would like for a given future modified tune or components.
Racer
Joined: Feb 2020
Posts: 484
Likes: 109
From: Fairfax, Virginia
I used an Aeromotive A1000 plumbed into the return side in conjunction with a block-off plate on the stock regulator. I ended up going with a slightly janky way of doing it that involved cutting the return line so that the -6 AN line fit nicely, but there are much nicer ways of doing it without cutting the lines. The regulator was mounted on the same bracket that held the top AIR solenoid.
Pro
Joined: Dec 2018
Posts: 733
Likes: 424
From: Wisconsin
2023 Corvette of the Year Finalist - Modified
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Finalist 2020 C4 of the Year - Modified
I have this Holley one on my 85. https://www.holley.com/products/fuel.../parts/512-501 It clears everything just fine and has worked well, even with boost. If I recall correctly: it replaced a Jet adjustable that I wasn't too impressed by. The adjustment screw on the Jet was close to the plenum which made adjustment difficult. I replaced it after it started giving me problems with maintaining accurate pressure. I would set the base pressure, go out for a drive, and the base pressure would get as much as 5psi off. (Worse if I got into the boost.)