Fuel Pressure Gauge Signal

[Ace]

http://stuff.is-a-geek.net/PhotoAlbum/C ... CTD_41.jpg

This is an early pic before I installed the snubber. The snubber is just a little fitting with a tiny hole in it to reduce the pump pulsation, connected between the valve and the steel braid line leading in to the cab.

Seems almost everything I do get revisited for improvement or revamp later.

[whereswaldo250]

Thanks ACE,
So I understand, what gauge manufacturer are you using? I will be using Isspro, so in that picture the bottom line is coming from the banjo bolt and the stainless bradded line goes into the cab, is this correct? Also where can I find a snubber for this ordeal? Are there any down sides to running an isolator? Just weighing my options. I didn't really understand what all was involved with running a fuel pressure gauge, seems difficult.

Best Regards

[Ace]

...what gauge manufacturer are you using?

I've got Autometers, but I suspect the plumbing for any mech gauge would be the same, regardless.

...the bottom line is coming from the banjo bolt and the stainless bradded line goes into the cab, is this correct?

Yep.

...where can I find a snubber for this ordeal?

I got it from McMaster-Carr. Smaller, the better.

Are there any down sides to running an isolator?

Cost, is all. The ones I saw about two years ago when I was doing gauges ran around $100. They may also help dampen the pump pulse, dunno. It's just a little plumbing and wiring, no biggie. Mounting and finding a good way/place to do that is probably the biggest hurdle.

[whereswaldo250]

Well ACE I appreciate you answering all of my questions. I do have one more question and that is, when you rand the Stainless Steal hose into the cab did you have to drill the firewall? I am planning on drilling the firewall for all of my other gauges, I just need to know how big of a hole I need to drill.

Thanks again

[Ace]

There is an existing rubber or plastic plug up near the brake booster I have been runing all that type stuff through. It's between one and two inches in diamtere and mine's almost full now.

[whereswaldo250]

OK when I said I had one more question, I lied I have my McMaster Carr book out and there seems to be three different types of snubbers, 1: Orifice style Low Pressure, 2: Porous-Disc Medium Pressure, 3: Piston High Pressure. Which one should I choose? I really feel like I am in the dark

Thanks

[Ace]

I think I used an orifice type, but really don't remember. The porous disc sounds like it might work better for this app. High pressure certainly would not be needed.

IIRC, I did not even see any difference on the gauge with a snubber. Mine runs through about a 3 foot section of rubber hose to the valve. Between that and the needle valve I never saw any gauge flutter anyway, as long as the valve was only barely cracked open. I just wanted to see if the snubber would let me open the valve more so the gauge would register more quickly at startup.

Always tinkering with stuff. Can't leave well enough alone...