Im trying to add an external Fuel Pres. gauge to the stock fuel rails on an 87 350 TPI. I need to know what size fitments I need for the plumbing. I have 1/8 inch fitment that just doesnt seem to cut it. Anyone know the size I should be using (what are the dimensions on the port on the fuel rails?)

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11-19-2005, 04:53 PM

John Millican

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Car: 1997 Jeep Wrangler

Engine: 4.0L

Transmission: 5 speed

Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer

The TPI fuel rail fitting is -4 AN

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11-19-2005, 08:34 PM

Shagwell

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Car: projects.......

AN - JIC(37 degree flare) same thing. yes, -4

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10-04-2006, 07:22 PM

slowdeath

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help

hey, i know this thread is pretty old but anyone know where i can get one of those fittings? im goin nuts tryin to find somethin that will hook up to the pressure port. i assume you guys are indeed talkin about the shraeder valve. if its a common fitting, wanna just tell me what to ask the hardware guys in a language theyll understand?

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10-05-2006, 05:42 AM

nelapse

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Summit racing or jegs has a great selection of automotive plumbing, tell them you need an -AN 4 fitting, and hose to match it for your gauge. The fittings themselves cost around $5-6. Hose $14 at 3ft