fuel pump

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bryen616
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fuel pump

Post by bryen616 »

I have a sandrail with a 1914 engine and am having problems with fuel pressure. I am currently running dual 44 webers. I bought a holly fuel regulator and a fuel pressure gauge. I've heard that you need between
2 1/2 -3 pounds of pressure. Currently i'm getting 1 1/2 lbs. I have the faucet pump ( the gold square looking one). The diameter of the fuel line are about 3/8in ( they connect to a #6 fitting). Do you think i need a better pump? It sounds great and strong, but i have a feeling it not enough. Suggestions???

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porboy
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Post by porboy »

What are you doing as far as fuel filters? They could be dirty or to small. As far as pump choices, the holley red pump would be perfect for you.

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r erfert
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Post by r erfert »

My neighbor the other day had a simular problem feeding a single 44 Weber...
Little pressure/fuel flow from regulator with an electric pump.
We removed the regulator and the pump is moving plenty of fuel...We must have had something (junk) in the regulator.
Car ran fine after we removed the regulator.
The symptoms were...some lean popping and stumbling on acceleration.
Rick

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Post by bryen616 »

I"m GETTING GOOD FLOW WHEN I discnnect ONE OF THE FUEL LINES. IT IS LIKE IF I HAVE VOLUME BUT NO PRESSURE TO KEEP CONSTANT.

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r erfert
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Post by r erfert »

bryen616 wrote:I"m GETTING GOOD FLOW WHEN I discnnect ONE OF THE FUEL LINES. IT IS LIKE IF I HAVE VOLUME BUT NO PRESSURE TO KEEP CONSTANT.
What is the fuel pressure if you remove the regulator and check the main line from the pump??If more than 5...I would say its the regulator or something clogging it.
Rick

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Tom Simrak
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Post by Tom Simrak »

This may soud like a stupid fix, but I did it and ran for years with a 2054 and bigger, with 44 webers.... ready... Stock VW fuel pump.

Yep, there is no need for the expensive pumps and regulaters...unless you just like to spend money. A stock VW pump will provide plenty of fuel and plenty of pressure. I ran one on my car with various motors from 2054 up to 2275 with duel webers for over 5 years. I didnt change it until I went with a turbo.
Why do you think you need a regulater with carbs?

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Post by Sandemon »

I have a stock VW fuel pump on my car also (2180 with duel 44's) and have not had any problems with the pump keeping up. I have also had 2 48 IDA's on that motor with a stock pump and no problems :twisted: 8) :)
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Post by Intelliduner »

Tom Simrak wrote: Why do you think you need a regulater with carbs?
Webers don't "like" more than about 3 PSI. I'm not sure what it does to them to have more pressure, but that's what I've always heard. A stock pump will run about that pressure so no need for a regulator, but electrics often put out more pressure and thus need a regulator.

I too ran a stock mechanical pump on a 2180 with 40 IDFs (internally modded very close to 44s) with no problems, but my buggy (2332) came with an electric pump so I won't retrofit it. Although the regulator may be one culprit in some ongoing problems I've been having with it...

_dennis (needs to get a fuel pressure gauge)

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Post by desertsteve »

I always ran my FP pressure @ 1.5 with the same pump you have, No problemos. I'm not sure if you are talking about pressure to the carbs or the motor starving for fuel. If its the latter you should try a bigger main/ needle valve and seat. Maybe 200- 250 ?.

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