I'm thinking of putting a fuel pressure gauge inside my car. It is a TPI engine so I would need a high pressure gauge.
Can I see pics where you people have mounted one and did you use an electric or mechanical gauge. For those that used a mechanical gauge, where did you mount the isolator?
Which type would be most recommended? Cost?

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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Trick Flow Heads, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine belt setup, Dual IROC Fans.

http://www.sethirdgen.org/octride.htm

 

If you find one, I got dibs on your rail mounted gauge!

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If you live in Southeastern US, check us out!
South East Thirdgen


ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
JET AFPR,
Ported Plenum,
TB Coolant Bypass,
SSM SFC,
Boxed LCAs,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
KYB Shocks

'97 Bonneville SSE

 

I don't have any pics but I have a mechanical 2 1/16" Autometer Z series on my A pillar gauge pod.

I mounted the isolator on the firewall cowl by the MAF relays using a single adel clamp. I think NHRA rules say you cannot mount the isolator on the firewall but I don't go to the track much so I said screw it. Lately I've had trouble with the isolator so I removed it for now and run straight to the gauge. (I don't drive it like it that, I cap off the scraeder valve when I'm driving. I just do that for setting FP)

I recommend getting an electric FP gauge instead, it's MUCH easier to install and just as accurate. With a mechanical gauge its accuracy depends on how well you fill and bleed the isolator. It took me a few times to get it right and can get messy. I will get an electric FP gauge soon from Autometer.

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1989 IROC-Z, ZZ3 shortblock with some bolt-ons.
13.20 @ 108.69, 2.2 60'

 

I've heard of trouble with isolators before. Anyone have an opinion on electric gauges? I've seen a couple and they seem to be expensive.

GMTech, you have dibs on my rail mounted one but I can't see it while driving so neither will you That's when I need it, during WOT runs.....checking to see if my fuel pump is putting out


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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Trick Flow Heads, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine belt setup, Dual IROC Fans.

http://www.sethirdgen.org/octride.htm

 

I have an Autometer electric fuel pressure gauge. It has been checked against two mechanical gauges and is accurate to within 1 psig. It's very easy to install. The only drawback is it's cost. Check out the link in my sig and go to "In the Driver's Seat" for pics.

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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 114 mph (50-hp nitrous).
http://members.optushome.com/au/downunder1/rides/willie/willie.html

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

 

Willie, where did you mount your pressure module at? I have my autometer electric gauge on my a-pillar, and my module near my ECM. I constantly read 10PSI lower on my electric gauge. I am wondering if the lengthening of the wires have anything to do with it.

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1989 IROC-Z 5.7L

 

John, if that fuel pump of yours isn't putting out enough fuel, then you have some really big problems. (Do they make a bigger fuel pump than that?)

------------------
If you live in Southeastern US, check us out!
South East Thirdgen


ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
JET AFPR,
Ported Plenum,
TB Coolant Bypass,
SSM SFC,
Boxed LCAs,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
KYB Shocks

'97 Bonneville SSE

 

I'm just curious, that's all. But remember that my fuel lines are stock sizes and I read that to feed 400hp you need 1/2" lines.

 

There's a tech article in the tech section about getting the isolator, it's pretty well detailed.


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-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
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