fuel pressure gauge
hey i got an issapro fuel pressure gauge as a early xmas present from my girl. i was wondering wheres the best place to tap into to run a line to my gauge. and whats good numbers for my 12 valve to have with the stock lift pump. thanks and merry christmas.
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Take the banjo bolt out from teh P-7100 inlet. Drill it with a size R bit and tap with a 1/8" npt tap, get the appropriate fittings and a needle valve. Run the needle valve barely cracked - this is to dampen the pressure spikes from the injector pump and save your guage. Installation should look like this:
Attachment 50221 |
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Agree Dr Evil, Except once you tap into your bolt use use an 1/8 npt to (I think 4AN??) and tie into an autometer Isolater. This prevents the gauage spikes, and keeps all your fuel under the hood, not in your cab. I have one and its a little touchy getting hooked up but take your time and read the instructions, and it will work great. I mounted mine on the steering column in a nice little pod. The last place you want fuel if you get in an accident is in your cab dripping on you, especially if it catchs fire.
---AutoMerged DoublePost--- Attachment 50219 Attachment 50220 The little brass thing w/ the stainless tube is the isolator. |
I used a 24V truck tapped banjo bolt and that fits right into the top of my FF housing on the outlet line. I used that for a long time until I put the FASS on. with a stock LP and OFV you should see 17-20psi at idle and up to 30psi when the R's come up.
http://i69.photobucket.com/albums/i7...reGauge009.jpg |
". Drill it with a size R bit and tap with a 1/8" npt tap"
what exactly is an "r bit." im at a loss for that one. and where do i find the autometer thing? thanks guys........i just look the di pricol fuel pressure gauge kit comes with this isolater, will this work the same as the brass auto meter one? |
An R bit is 0.3390 inches. This is the proper drill size for a 1/8" NPT tap. But, you could probably get away with using an 11/32" bit (0.3438), it's the closest fractional equivalent and found in most standard drill bit sets.
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Here ya go. Isolator-
Auto Meter 5282 - Auto Meter High Pressure Gauge Isolators - Overview - SummitRacing.com |
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