Fuel pressure setting and adjusting.... HELP!!!
Thread Starter
Senior Member
Joined: Aug 1999
Posts: 618
Likes: 0
From: Central, NJ
Car: 1989 IROC-Z
Engine: 350 Vortech Supercharged ZZ4 TPI
Transmission: T56
Axle/Gears: 3.73
Fuel pressure setting and adjusting.... HELP!!!
I am reading on the boards that the stock setting is around 46 PSI. I have an Adjustable Fuel pressure regulator on my L98 and I just installed an Accel fuel pressure gauge. It is reading 35 PSI!!! That means I have been driving around for the last two years with 35 PSI.
I was only able to turn it up to 37PSI. It seems pretty difficult to change, because the distributor wires, etc are in the way. What is an easy way to quickly change the pressure? What PSI should I probably be running (approx) with the mods that I have?
Any help/comments/info will be greatly appreciated.
------------------
1989 Chevrolet Camaro IROC-Z
L98 - 350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back, SLP 1 5/8 Coated Headers, 3.23 Posi rear, Hypertech chip with 160stat, Under-Drive pulleys, AFPR, K&N's, !Air Box w/ Ram Air, moddified MAF, !TB Coolant, Spohn Dual Cat SubFrame Connectors, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)
Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Spohn strut tower brace and LCA's
1989 Chevrolet Celebrity Eurosport
2.8 MPFI, no mods
225,000 miles and still ticking!
More info and pics on my webpage:http://go.to/iroc-z
AOL IMer: GPA 0point0
I was only able to turn it up to 37PSI. It seems pretty difficult to change, because the distributor wires, etc are in the way. What is an easy way to quickly change the pressure? What PSI should I probably be running (approx) with the mods that I have?
Any help/comments/info will be greatly appreciated.
------------------
1989 Chevrolet Camaro IROC-Z
L98 - 350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back, SLP 1 5/8 Coated Headers, 3.23 Posi rear, Hypertech chip with 160stat, Under-Drive pulleys, AFPR, K&N's, !Air Box w/ Ram Air, moddified MAF, !TB Coolant, Spohn Dual Cat SubFrame Connectors, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)
Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Spohn strut tower brace and LCA's
1989 Chevrolet Celebrity Eurosport
2.8 MPFI, no mods
225,000 miles and still ticking!
More info and pics on my webpage:http://go.to/iroc-z
AOL IMer: GPA 0point0
Moderator
Joined: Jan 2000
Posts: 19,657
Likes: 310
L98,
Are you adjusting the pressure with the engine running? The vacuum line connected to the FPR?
------------------
Later,
Vader
------------------
"Get UP - Drop the bombshell!"
Adobe Acrobat Reader
Are you adjusting the pressure with the engine running? The vacuum line connected to the FPR?
------------------
Later,
Vader
------------------
"Get UP - Drop the bombshell!"
Adobe Acrobat Reader
Thread Starter
Senior Member
Joined: Aug 1999
Posts: 618
Likes: 0
From: Central, NJ
Car: 1989 IROC-Z
Engine: 350 Vortech Supercharged ZZ4 TPI
Transmission: T56
Axle/Gears: 3.73
Yes i am checking it with the engine running, but however not with the vacuum line disconnected. I am guessing its a vacuum line on the AFPR?? And what PSI should i be running once the vacuum line is disconnected considering the mods i have in my signature.
Thanks again,
J.R.
------------------
1989 Chevrolet Camaro IROC-Z
L98 - 350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back, SLP 1 5/8 Coated Headers, 3.23 Posi rear, Hypertech chip with 160stat, Under-Drive pulleys, AFPR, K&N's, !Air Box w/ Ram Air, moddified MAF, !TB Coolant, Spohn Dual Cat SubFrame Connectors, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)
Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Spohn strut tower brace and LCA's
1989 Chevrolet Celebrity Eurosport
2.8 MPFI, no mods
225,000 miles and still ticking!
More info and pics on my webpage:http://go.to/iroc-z
AOL IMer: GPA 0point0
Thanks again,
J.R.
------------------
1989 Chevrolet Camaro IROC-Z
L98 - 350c.i. TPI, rebuilt 700R4 auto w/shift kit, Dual catalyst Monza PaceSetter Cat-Back, SLP 1 5/8 Coated Headers, 3.23 Posi rear, Hypertech chip with 160stat, Under-Drive pulleys, AFPR, K&N's, !Air Box w/ Ram Air, moddified MAF, !TB Coolant, Spohn Dual Cat SubFrame Connectors, Alarm, Keyless entry, remote starter, 92 Z28 AeroWing, Brand New Paint (6/21/01)
Future: ZZ4 TPI w/EGR, T56, 3.42 or 3.73, Spohn strut tower brace and LCA's
1989 Chevrolet Celebrity Eurosport
2.8 MPFI, no mods
225,000 miles and still ticking!
More info and pics on my webpage:http://go.to/iroc-z
AOL IMer: GPA 0point0
Thread
Thread Starter
Forum
Replies
Last Post
R3500
Engine/Drivetrain/Suspension Wanted
1
Aug 17, 2015 12:16 PM
92camaroJoe
Tech / General Engine
6
Aug 13, 2015 06:07 AM
