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08-29-2016, 04:06 PM | #1 |
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Location: Illinois
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Fuel pressure question
I have a facet pump rated at 1 1/2 -2 1/2 psi. No regulator. It pumps at a steady 1 1/2. I thought it might run in middle of the range,but no. Is this enough pressure for 2 97s on 276 motor?
At 1 1/2 psi it delivers 10 gph. John Last edited by john in illinois; 08-29-2016 at 04:11 PM. |
08-29-2016, 04:11 PM | #2 |
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Re: Fuel pressure question
That should be enough. Have you tried firing the engine up with the pump installed?
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08-29-2016, 04:29 PM | #3 |
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Re: Fuel pressure question
Seth,the engine runs great. I have driven it around my house on country roads.
No highway. John |
08-29-2016, 05:10 PM | #4 |
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Re: Fuel pressure question
One thing you can do is plumb in a fuel pressure gauge so you can see what the pressure is doing at higher RPMs. I like fuel pressure gauges on all of my non-stock engines.
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08-30-2016, 06:27 AM | #5 |
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Re: Fuel pressure question
I have a permanent gage. It stays at 1 1/2 all the time. Stromberg I think calls for max 2lbs. Hopefully this will be enough.
John |
08-30-2016, 07:07 AM | #6 |
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Re: Fuel pressure question
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John "Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts". Albert Einstein Last edited by JM 35 Sedan; 08-30-2016 at 12:16 PM. |
08-30-2016, 12:08 PM | #7 |
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Re: Fuel pressure question
John,that is a good point that I had not thought of. Right now I am happy to drive it around after 3 1/2 years work,but I will probably put a higher pressure pump and regulator on it later before a long drive.That is what I usually do,but this was an experiment.
John |
08-30-2016, 05:14 PM | #8 |
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Re: Fuel pressure question
I am hearing of lots of vapor lock problems with older cars..!!
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08-31-2016, 08:21 AM | #9 |
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Re: Fuel pressure question
I like to see 3 to 3.5 lbs fuel pressure when everything is COLD. It drops some
when hot. 1.5 lbs is a sure invitation to vapor lock especially with corn gas when parts get hot on hot days. A modern type Goss valve constantly leaves small amounts of fuel in and the float level hardly changes. This means cooler tank gas is always moving through the fuel system helping cool things. G.M.
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08-31-2016, 08:32 AM | #10 |
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Re: Fuel pressure question
Your biggest problem will come in around 75/80 mph and it probably won't get over a 100.
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