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Tractor Pulling Discussion Forum

Fuel pressure on a Stromberg Carburetor

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sls

04-25-2008 15:52:32




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What is a safe fuel pressure for a Stromberg carburetor? It is a NAR9B




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james rumph

04-26-2008 18:00:32




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 Re: Fuel pressure on a Stromberg Carburetor in reply to sls, 04-25-2008 15:52:32  

No there isn't any drop in fuel presure. I'm only spinning the motor up to 2000 rpm , unlike a car motor that may go 7000 rpm.

I have turned the fuel presure up to 10 psi and the needle held it back , but that much presure isn't needed in this application.

My motor isn't crazy so do i need a electric pump ? I do believe it makes a differance .



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james rumph

04-25-2008 18:38:47




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 Re: Fuel pressure on a Stromberg Carburetor in reply to sls, 04-25-2008 15:52:32  

I have been running 5 to 8 psi with out any problem with a Malory electric pump and regulator.

I mounted a small fuel presure gauge off the reg so we could watch it while we were running it on the dyno.



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sls

04-26-2008 03:44:19




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 Re: Fuel pressure on a Stromberg Carburetor in reply to james rumph, 04-25-2008 18:38:47  
James, When doing a dyno pull do you see alot of fuel pressure drop under a full load.



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