10 Minute Regulator Rebuild

The 408 swap continues. Changing out the fuel pressure regulator diaphragm is one of the preventative maintenance things I do at the beginning of each season. it takes about 10-20 minutes and creates 100lbs of insurance for 2lbs of effort. This is another great starter repair if your just getting into racing or repair work. Its also a great money saver, for $7-10 you use the same housing rather than replace the whole assembly and typically you don't have to remove any fuel lines to make the swap.
link to episode 10
• CHASING DAMAGED THREADS
Thanks for watching, please let us know what you think about the videos or if there is a procedure you would like to see. we'd love to hear from you.

[@shanemcclaran3012]

That's a cool tool tech tip

[@charlesellenberger1352]

Could you please tell me EXACTLY how ran your fuel lines from tank to carb on your foxbody? I’m building an 87 lx drag car. I would like to use my stock tank with a tube pickup in place of the EFI in tank pump, as well as a Holley red pump I have. I also have a Holley fuel pressure regulator like the one you use. I’m running a 650 proform street carburetor with the choke horn removed. Thank you

[@FabRaceModRepeat]

Great question, I actually have a 5 gallon fuel cell mounted in the old spare tire well. I have #10 supply line run forward after passing thru a bulkhead connector to exit the spare well along the right rocker panel, and turning up the fire wall/torque box. I then have a #6 return going back to the cell along the same path. Those 2 line of course end at the regulator. I have #6 line going to the carb.

[@mekial2222]

Is that a 12-803 that you just routed like a bp? Or 12-803bp?

[@FabRaceModRepeat]

Thanks for watching
That’s a 15 year old 12-803.

[@migueldominguez4046]

I am looking to adapt a 34 pict-3 carburetor on my truck. the carburetor does not have a return line. the holley 12-804 fuel pressure regulator has no return line but I need a fuel pressure regulator that has a return line on it . the problem Is that it has to be 1-4 psi like the 12-804 that does not have a return line. the 12-803 is a high pressure regulator an does have a return line. do you think that if I buy the 12-803. the spring kit would reduce the psi to 1-4 . thanks for the help in advance.

[@FabRaceModRepeat]

miguel Dominguez
Afternoon
The 12-804 is set at 2-3 psi from the factory. It should just be a matter of using the appropriate spring for you pressure range.

[@migueldominguez4046]

@@FabRaceModRepeat I am trying to prevent vapor lock issues by having a return line.

[@FabRaceModRepeat]

miguel Dominguez
Return line can help with that

[@FabRaceModRepeat]

miguel Dominguez
A thought have you made sure your fuel tank vent isn’t clogged?

[@FabRaceModRepeat]

Use the 12-803 with the low pressure spring.

[@shanemcclaran3012]

How to convert one to a boost reference

[@FabRaceModRepeat]

@shanemcclaran3012
It can be done however, its easier and probably cheaper; to just by a referenced one ready made now days.

[@Ihavetruth22]

of course the oem and other regulators arent allowed to be serviced which is a joke

[@FabRaceModRepeat]

A joke indeed!

[@tannoitaly]

AN 6??? AN8??

[@FabRaceModRepeat]

My setup for this particular car:
Feed from tank 10an
Return 8an, carb 6 an

[@NewFlyer56k]

Part # for that kit? Thanks...

[@FabRaceModRepeat]

NewFlyer56k
12-807 Holley kit

[@NewFlyer56k]

@@FabRaceModRepeat much thanks...

[@FabRaceModRepeat]

NewFlyer56k
Anytime