Facet Fuel Pumps

[Ian Anderson]

I thought that Facet/Purolator recommends the pumps be mounted as close to the fuel tank as possible. Does it matter? I do recall seeing photo's of an original Mk II car with a fuel pump on both sides of the engine bay.

Chris

Yes it does
They pump a lot better than they suck

So short distance from tank to pump and long distance pump to engine is better than long distance tank to pump and short distance pump to engine.

They should also be mounted as near to vertical as possible

Ian

 

[Cliff Beer]

if the tank is under the same pressure as the lines then the pump is still doing all the work. the tank is just a fat pipe and because the fuel is not compressable as soon as the float valve opens the pressure will drop the same as before. with big pump and small lines the lines cause a restriction and limit flow. with big line and small pump the pump is the limiting factor.
the best way is big pump pumping through big lines. if you want the closed tank to work it wiil need to be like a hydraulic accumulator. it needs to have a compressable bladder inside and mounted close to the carb . easier and cheaper to replace the pump with a bigger one. spend $300 on a pump that can handle up to 700HP. or $ 300 on a tank and plumbing that will not help the situation

Lynne, if it's mounted at float bowl height (with a big pipe!) then it's simply a much larger external float bowl. At a WOT fuel draw spike it'll be about a 50X larger bowl - that'll go a long way to improving things.

You're right however, probably a lot easier to just put some bigger pumps and larger diameter lines on there......

 

[Lynn Erickson]

Lynne, if it's mounted at float bowl height (with a big pipe!) then it's simply a much larger external float bowl. At a WOT fuel draw spike it'll be about a 50X larger bowl - that'll go a long way to improving things.

You're right however, probably a lot easier to just put some bigger pumps and larger diameter lines on there......

the tank in a pressureized line will not improve the flow. no more fuel will flow out of the tank unless you let either air into the tank or more fuel. you will only get out the same amount that can get in. how is a surge of fuel going to get out if you do not let the same amount of surge get into the tank. Aeromotive makes a pump that is good for up to 1500 HP and it only costs $320

 

[Charlie Farley]

Why don't you just fit Stewart Warner 240A's, as originally fitted ?
They did the job then and i'm sure would do the job now.

 

[Seymour Snerd]

Why don't you just fit Stewart Warner 240A's, as originally fitted ?
They did the job then and i'm sure would do the job now.

I'd be delighted to! Where would I get a couple new ones, and what would the price be?

 

[Lynn Erickson]

I'd be delighted to! Where would I get a couple new ones, and what would the price be?

if you could find one they run about $500 for NOS I have seen a few in the last 6 months
heres one used vintage stewart warner 240a 240 a fuel pump electric sw: eBay Motors (item 220641865576 end time Aug-01-10 18:00:00 PDT)

 

[Seymour Snerd]

if you could find one they run about $500 for NOS...

So, that would be about $1,000 to be "original" so for me that answers the earlier question "Why don't you just fit Stewart Warner 240A's, as originally fitted ?"