C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Fuel Pressure Guage

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Old Jan 15, 2017 | 06:50 PM
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Default Fuel Pressure Guage

I want to do something like the picture below. I'm trying to figure out what fitting I need to screw onto the Schrader valve and to match up to the gauge giving me a 45 degree angle. I know my gauge is 1/8 NPT Male.

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Old Jan 15, 2017 | 10:37 PM
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Originally Posted by slow-vette
I want to do something like the picture below. I'm trying to figure out what fitting I need to screw onto the Schrader valve and to match up to the gauge giving me a 45 degree angle. I know my gauge is 1/8 NPT Male.

I got this Accel gauge. That angled gauge looks better. Unscrew the valve and screw on the gauge.
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Old Jan 15, 2017 | 10:39 PM
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Originally Posted by HAD2HAV2
I got this Accel gauge. That angled gauge looks better. Unscrew the valve and screw on the gauge.
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Old Jan 15, 2017 | 11:39 PM
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Did your gauge come with the adapter to hook it to the fuel rail? So far none of the ones I have looked at come with the fitting.
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Old Jan 16, 2017 | 08:43 AM
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The GM Schrader is #4 AN. Earl's has all sorts of adaptors. I stock a few. You can see them in my Sales Guide available on-line under the downloads section. I suggest the AutoMeter electronic gage though as this way you can view it inside the cockpit. You do not have to do a permanent install - leave the gage in the box and use it as a test tool as needed. Being able to read fuel pressure while driving is often critical to solving many issues !
greg
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Old Jan 16, 2017 | 09:53 AM
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Originally Posted by slow-vette
I want to do something like the picture below. I'm trying to figure out what fitting I need to screw onto the Schrader valve and to match up to the gauge giving me a 45 degree angle. I know my gauge is 1/8 NPT Male.

that fuel gauge is on my 85. basically, I got everything from fleabay. you need the fuel rail adapter, and replace the 90° elbow with a 45° part. the gauge is a marshall liquid filled - again fleabay. hope this helps....

http://www.ebay.com/itm/CHEVY-LS2-LS...yStDOg&vxp=mtr

http://www.ebay.com/itm/1-8-Inch-NPT...EAAOSwf05XPIKL

http://www.ebay.com/itm/Marshall-Gau...xUZRS9&vxp=mtr

Last edited by Joe C; Jan 16, 2017 at 02:28 PM.
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