Regulator

Derek · Post by **Derek** » Thu Aug 11, 16 4:41 pm

If I fit a Holley blue top pump do I have to also fit a regulator, I do have a return from the carb to the tank so don't know if this will take away any excess pressure from the carb. Over to you guys with the knowledge

GJUK · Post by **GJUK** » Thu Aug 11, 16 7:36 pm

An electric pump would require a regulator.

Pete · Post by **Pete** » Thu Aug 11, 16 8:32 pm

Yes, a regulator is required.
You can "Dead head" it without a return line and it will work. Not the best design but the easiest and most simple.

You really need to install a Pressure gauge - either a small one near the Carb, or a remote one inside the Cab - you obviously cannot run fuel into the passenger compartment.

The Coronet ran an 11.02 with an AN-6 line and a Holley Blue dead-headed, so it will work on a road car Ok - just noisy!!!!!

I prefer to run return lines but more than double the cost and grief.

drewcrane · Post by **drewcrane** » Thu Aug 11, 16 8:37 pm

Pete wrote:Yes, a regulator is required.
You can "Dead head" it without a return line and it will work. Not the best design but the easiest and most simple.

You really need to install a Pressure gauge - either a small one near the Carb, or a remote one inside the Cab - you obviously cannot run fuel into the passenger compartment.

The Coronet ran an 11.02 with an AN-6 line and a Holley Blue dead-headed, so it will work on a road car Ok - just noisy!!!!!

I prefer to run return lines but more than double the cost and grief.

I just happened to have to re do my whole fuel system,and I have this very pump, yep noisy,but it puts out what I need,and I also by passed the return line just to see how it does in the 100 degree heat, well so far no issues did a 100 mile trip and didnt miss a beat, so now I have a return line on the car,just in case but the dead end seems to be fine with this pump,and regulator

Derek · Post by **Derek** » Thu Aug 11, 16 8:56 pm

Cheers guys

andyrob · Post by **andyrob** » Thu Aug 11, 16 9:57 pm

normal carbs only need 1.5 - 3 psi to run fine any more floods them a low pressure fuel pump will produce lots more 10 -12 psi
Ive never run a return on carbs, dead head works fine, my little ford xr2 race car only runs 2 psi where as my coronet runs about 7psi ( I think cant remember currently typing this on stella ) any more will start doing damage/flooding the carbs

Pete · Post by **Pete** » Thu Aug 11, 16 10:44 pm

7 psi is about right for a grown up car.

Scooby · Post by **Scooby** » Fri Aug 12, 16 4:45 pm

Derek why not just use a decent Holley mech pump less noise and hassle

the bigger Holley will handle most pressure flows. Speak with Anton he put a high input one on mine .
Rich

Pete · Post by **Pete** » Fri Aug 12, 16 5:36 pm

The biggest issue (amazingly) with mechanical fuel pumps nowadays is the pump push rod on a Big Block.

It seems that now all the zinc is removed from the oils the Pump rods wear like mad and result in (if you pardon the phrase) a very short stroke resulting in fuel starvation.