Fuel Pressure Gauge

86GT · 02-06-2001, 03:20 PM

Well, it'll soon be time for the engine swap, and I need to know where I can mount a gauge to measure the fuel pressure. I have access to the 87+ style rails and lines but not schrader (sp) valve. Is there a gauge that could fit into the fitting on the rail?

If not anyone know what works? Or does anyone know what works on my 86 rails which doesn't have a fitting?

MiracleMax · 02-07-2001, 12:02 AM

The hard line from the flexible to the rails dosen't have a fuel pressure test port? Thata the easiest way of plumbing it in If not then I dunno with the stock regulator rail layout? I have a paxton FPR and it has an extra port for mounting the FP gauge.

joe4speed · 02-07-2001, 12:13 AM

yes.. that's another way of doing it.. just get an adj. fuel pressure regulator with a port for a gauge!
Joe

86GT · 02-07-2001, 10:39 AM

Well there's no fittings at all on the 86 rails (at least mine, and my friend's cars). I do have a set of 87 rails with the fitting, but no schrader valve in it. I've got an adjustable regulator that doesn't have a port on it for a gauge. Anyone know where I could find that schrader vavle? Or a gauage that would take its place?

Mike Souslin · 02-07-2001, 11:02 AM

Just look in a Jeg's or Summit magazine. Accel makes one and Jeg's also makes one. Both are around $50.00 and just screw into the schrader valve (without the valve in it).
If you want, I'll take a picture of it after work and send it to you.

------------------
91 Coupe with fresh rebuild. Running Stage 2 Avenger heads (51cc chambers), Stage 2 cam (.549, .566)1.7 Crane Gold Race rockers, Port matched GT-40 upper & lower, 75mm MAF, 65 mm TB, MSD 6AL, Long Tubes through off road and Dynomax muffs. Stock T-5 and 3.73 gears. Big Blue Bottle on it's way!!!
Best time so far = 60'=2.021, 1/8=8.366 at 86.37 mph and the 1/4 was 12.926 at 108.44 mph.

MiracleMax · 02-07-2001, 10:01 PM

Thats the way I did it. I just plumbed my gauge into the test port. It was kinda neat how it fit snug up in there against the corner of the engine and altenator. I used a liquid filled pro-comp for mine. If ya lived in the tidewater area of Va you could come get the line and gauge. I'm planning on going with the aeromotive setup.

john_86stang · 02-07-2001, 11:55 PM

My 86 GT has the Schraeder valveright beside the fuel press. reg. I removed the stock FPR and put a Holley adjustable one in it's place. I then ordered the fitting to replace the Schraeder valve(got it from Race Parts 2(Kevin). It screws right in, and you can get it with AN4 coming out or 1/8"MPT. Whatever you prefer! Then you go to your gauge. Mine is in my cowl vent.

------------------
John Welch
86 GT, 3.73's, H-pipe, No smog pump, pulleys, K&N, and still going.

02-06-2001, 03:20 PM	#1
86GT Sniffed too much n20 Join Date: Oct 1998 Location: Ont, Canada Posts: 1,018	Fuel Pressure Gauge Well, it'll soon be time for the engine swap, and I need to know where I can mount a gauge to measure the fuel pressure. I have access to the 87+ style rails and lines but not schrader (sp) valve. Is there a gauge that could fit into the fitting on the rail? If not anyone know what works? Or does anyone know what works on my 86 rails which doesn't have a fitting?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
fuel pressure issues	mustang98gt	Modular Madness	3	07-05-2003 10:43 PM
Fuel pressure gauge...	bobtodd	Windsor Power	6	08-04-2002 10:18 AM
AutoMeter electric fuel pressure gauge help	Mike Souslin	Windsor Power	9	06-12-2002 11:01 PM
Fuel Pressure Gauge NOT working.	quick89gt	Windsor Power	3	05-01-2001 06:50 PM
Electric Fuel Pressure Gauge HELP!!	quick89gt	Windsor Power	3	03-13-2001 10:36 AM

02-07-2001, 12:02 AM	#2
MiracleMax Registered Member Join Date: Apr 1999 Location: Hayes, Va, USA Posts: 798	The hard line from the flexible to the rails dosen't have a fuel pressure test port? Thata the easiest way of plumbing it in If not then I dunno with the stock regulator rail layout? I have a paxton FPR and it has an extra port for mounting the FP gauge.

02-07-2001, 12:13 AM	#3
joe4speed He said Member...heh, heh Join Date: Sep 1999 Location: Jupiter, Florida U.S.A. Posts: 3,718	yes.. that's another way of doing it.. just get an adj. fuel pressure regulator with a port for a gauge! Joe

02-07-2001, 10:39 AM	#4
86GT Sniffed too much n20 Join Date: Oct 1998 Location: Ont, Canada Posts: 1,018	Well there's no fittings at all on the 86 rails (at least mine, and my friend's cars). I do have a set of 87 rails with the fitting, but no schrader valve in it. I've got an adjustable regulator that doesn't have a port on it for a gauge. Anyone know where I could find that schrader vavle? Or a gauage that would take its place?

02-07-2001, 11:02 AM	#5
Mike Souslin Registered Member Join Date: Sep 1999 Location: Grove City Ohio Posts: 226	Just look in a Jeg's or Summit magazine. Accel makes one and Jeg's also makes one. Both are around $50.00 and just screw into the schrader valve (without the valve in it). If you want, I'll take a picture of it after work and send it to you. ------------------ 91 Coupe with fresh rebuild. Running Stage 2 Avenger heads (51cc chambers), Stage 2 cam (.549, .566)1.7 Crane Gold Race rockers, Port matched GT-40 upper & lower, 75mm MAF, 65 mm TB, MSD 6AL, Long Tubes through off road and Dynomax muffs. Stock T-5 and 3.73 gears. Big Blue Bottle on it's way!!! Best time so far = 60'=2.021, 1/8=8.366 at 86.37 mph and the 1/4 was 12.926 at 108.44 mph.

02-07-2001, 10:01 PM	#6
MiracleMax Registered Member Join Date: Apr 1999 Location: Hayes, Va, USA Posts: 798	Thats the way I did it. I just plumbed my gauge into the test port. It was kinda neat how it fit snug up in there against the corner of the engine and altenator. I used a liquid filled pro-comp for mine. If ya lived in the tidewater area of Va you could come get the line and gauge. I'm planning on going with the aeromotive setup.

02-07-2001, 11:55 PM	#7
john_86stang Registered Member Join Date: Jan 2001 Location: Crossett, Arkansas USA Posts: 45	My 86 GT has the Schraeder valveright beside the fuel press. reg. I removed the stock FPR and put a Holley adjustable one in it's place. I then ordered the fitting to replace the Schraeder valve(got it from Race Parts 2(Kevin). It screws right in, and you can get it with AN4 coming out or 1/8"MPT. Whatever you prefer! Then you go to your gauge. Mine is in my cowl vent. ------------------ John Welch 86 GT, 3.73's, H-pipe, No smog pump, pulleys, K&N, and still going.