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Fuel pressure gauge for end of fuel rail?

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Blazer406

Mechanical Engineer
Joined
May 2, 2002
Messages
5,068
What is everybody using to check fuel pressure at the end of the fuel rail? I want a small gauge to permanently attach to the end of the fuel rail... but don't know what threads it is.... or where to get one....

I guess I was hoping for a small liquid filled FP gauge from Jegs with 1/8 NPT would screw into where the valve core is.... but am not sure that is the threads.....
 
-4AN will screw onto the rail we have a fitting, 90 and a high quality silicone filled gauge as a kit ready to ship
MIke
 
I put together a monstrosity from home depot plumbing section. Then screwed the fuel gauge into it. My suggestion, get one that has about 2-3' of braided line, that way you can screw it onto the fuel rail and set the actual guage on the inner fender. The vibration from the motor tends to screw up the fuel guage over time. Plus you can tape the guage to your windshield to make sure its going up with boost. If not, get the part from Mike!
 
if you run a line off the tap (like those who have it on the windshield during racing) the vibration damage is minimized, I have yet to mount mine on the hood itself so it sits under the windshield wiper to hold it in place. But I never drive in the rain anymore.
 
go to a heating and air place and get a black 60" hose for air charging and run it up to your windshield and attach the gauge. then loop a black wire aroud the gauge and slide it under the black steel cover around the wipers and twist the wire tight it will look great and fast i'm glad i did because my fp was dropping 12 pounds at wot if i didnt have that installed permanently i would be overhauling my motor.
 
I watch my FP thru the windshield :D You want to make sure your getting
the boost to FP ratio in real time.
 
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