Fuel pressure regulator...

[300I6Ranger4x4]

Can anyone recommend a fuel pressure regulator i can use for bringing my stock ranger pump pressure down to 5-7psi for my 351 carb'd motor swap??

 

[kevinbmx77]

Can anyone recommend a fuel pressure regulator i can use for bringing my stock ranger pump pressure down to 5-7psi for my 351 carb'd motor swap??

Someone told me that the stock 50 psi pushing through a regulator will blow them out quickly, not sure if thats actually the case but for my swap i will be doing a low pressure pump with a holley regulator. Ill have to drop the tank and remove the stock pump and replace it with fuel line to the bottom of the tank. Its not hard to do and probably worth the effort more than forcing 50 psi down to about 5

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[Die.Fledermaus]

I have heard claims that the better aftermarket FPR like malpassi can cope with FI pumps and carburetor needs. I would only look at return style regulators.
http://www.fuelpumpsonline.co.uk/sy...carburettor-conversion-regulator-8mm-31-p.asp
http://www.rallynuts.com/motorsport...sure-regulator-single-outlet-with-vacuum.html

 

[kevinbmx77]

I have heard claims that the better aftermarket FPR like malpassi can cope with FI pumps and carburetor needs. I would only look at return style regulators.
http://www.fuelpumpsonline.co.uk/sy...carburettor-conversion-regulator-8mm-31-p.asp
http://www.rallynuts.com/motorsport...sure-regulator-single-outlet-with-vacuum.html

This actually seems like a better option but the first link says it is for dual carbs, would you just cap the second outlet? If i get this i will be using the holley regulator after it also to get around 4-7 psi

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[Die.Fledermaus]

That is why I posted the second link, but yes the body can have one or two outlets and plumbed for either one or two no matter.

Why would you add a second regulator?

 

[RonD]

Get an adjustable regulator WITH return line, your 1991 is already set up for that.

Example here: https://www.holley.com/products/fue...gulators/carbureted_regulators/parts/12-803BP

 

[300I6Ranger4x4]

Get an adjustable regulator WITH return line, your 1991 is already set up for that.

Example here: https://www.holley.com/products/fue...gulators/carbureted_regulators/parts/12-803BP

Nice! so that will work with my rangers in tank pump with proper return line?

 

[RonD]

Yes, no real strain on the 40psi in-tank pump since extra fuel/pressure is just sent back to the tank on the return line.
This can lower MPG because of the movement and warming of the fuel as it passes thru the fuel lines(friction), and this is why Ford and others switch to "returnless" systems in the late 1990's.
It isn't much of an MPG increase/decrease but in the MPG wars every little bit counts
But since you are running a carb MPG wouldn't be on your mind in any case, lol.

 

[farmer]

That regulator linked is the one I used on my 91, I added a fuel pressure guage after the regulator to keep tabs on it. Works very well!

 

[300I6Ranger4x4]

nice. done and done. I'll order one of those up!

 

[300I6Ranger4x4]

where abouts in-line is the best place to install the regulator?

 

[farmer]

I mounted mine on the firewall right behind the carb and ran high pressure rubber line from the steel line up and back.