Good mech fuel pressure gauge
03-16-2006, 01:14 PM
#11
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Thread Starter
Re: Good mech fuel pressure gauge
Originally Posted by RLW
When taking readings with the liquid filled gauge, at the time of use, you must vent the gauge. This is done by removing the rubber plug on the back of the gauge.
Make sure the plug is above the liquid line or the liquid will run out. Of course, replace the plug after venting.
The gauge can build up pressure over time and will give you inaccurate readings.
Make sure the plug is above the liquid line or the liquid will run out. Of course, replace the plug after venting.
The gauge can build up pressure over time and will give you inaccurate readings.
03-16-2006, 05:31 PM
#12
~~~~
Charter Member
Re: Good mech fuel pressure gauge
Grog,
I should clarify my statement. I am not sure what your setup requires for fuel pressure but this is what I have implemented.
540 CID carbureted NA motor,with 1050 Holley.
8 psi of fuel pressure at idle, is ideal.
8.75 psi is maximum.
9 psi is too much (needle leaks).
7 psi is minimum.
My fuel pressure gauge has a range of 0 - 15 psig.
As you can see, accuracy is important.
I am using a Holley 170 GPH mechanical fuel pump and no pressure regulator. No need for regulator unless necessary. This will minimize restrictions in your fuel delivery.
Also, I can't take credit for the information. I was tutored by Nickerson.
Russ
I should clarify my statement. I am not sure what your setup requires for fuel pressure but this is what I have implemented.
540 CID carbureted NA motor,with 1050 Holley.
8 psi of fuel pressure at idle, is ideal.
8.75 psi is maximum.
9 psi is too much (needle leaks).
7 psi is minimum.
My fuel pressure gauge has a range of 0 - 15 psig.
As you can see, accuracy is important.
I am using a Holley 170 GPH mechanical fuel pump and no pressure regulator. No need for regulator unless necessary. This will minimize restrictions in your fuel delivery.
Also, I can't take credit for the information. I was tutored by Nickerson.
Russ
