Hi Guys, I just wondered if the Facet fuel pump would be okay to use with twin Weber 34 ICTs? They are rated at 2-3.5 psi and have a positive fuel shut off valve... Just thinking I could get rid of my fuel pressure regulator and save buying a fuel cut-off solenoid? Thanks in advance. Here are the specs.. Facet 40171 Solid State Fuel Pump Specification:- Motorcycle, Automotive Pump:- Facet 40171 Voltage:- 12v Earth:- Neg Pressure (Psi):- 3.5-2 Flow:- US Gallons/Hr:- 15 Dry Prime Height in Mtrs:- 0.3 Thread Size:- 1/8th nptf Positive Shut-Off Valve:- Yes Check Valve:- Yes Operating Temperature:- -40º F to 180° F (all Models) Legal Requirements:- Certified & Complies With EEC 95/54 Requirements Length:- 75mm Height:- 60mm Weight:-0.5kg
On our '73 we use the Carter rotary electric fuel pump regulated back to 2.5 psi and it seems to be fine (or it has for the past five years)
I was thinking about doing away with the fuel pressure regulator if I could find a fuel pump with a low enough output. One less thing to leak?
I also have the Carter rotary on my 2ltr with twin 40s. It's already regulated to 3psi output and has a metal filter. I do also use one of those £12 shutoff solenoids off fleabay to stop the petrol siphoning past the leaky float valve (yes it will happen) into the crankcase.
The problem with that Mark is if your float valve is knackered you will be over fuelling whilst the engine is running and washing the bores of oil.
Don’t see an issue with the Facet pump Chris if the max pressure is 3.5psi. You could remove the fuel regulator if that’s the max pressure. Also if the pump has a positive shut off I wouldn’t think fitting another shut off valve has any benefit.
Good thinking. However I’ve got from the tank outlet a pre filter before the shut off valve, then a metal filter which came connected to the carter pump then a T piece before the carb connections. So quite a few connections/clamps. I will be keeping a regular eye on the hose condition however even though it’s ethanol proof barrier hose.
Another vote for the Carter/CB rotary pump but they’re about £100 now, 12 years ago mine was £55. Weber IDF carbs, no cut-off valve, no pressure regulator and no problems.
Don't get me wrong, I wasn't suggesting it as a replacement for fixing faulty float valves. It's just a common problem with Webers and it saves filling the sump with petrol over night - ask me how I know
You might find the technical section on wayoutwestie of interest. Mike talks of the ICTs being very sensitive to fuel pressure and recommends a max of 2.1psi. He says he uses a Huco fuel pump on his van so I’ve just bought one from Classic Carbs and hope to fit this weekend as the fuel pump I’ve been using with ICTs is over fuelling. If all goes well I’ll let you know what I think of the change.
Thank you for the heads up, I’ll take a look on wayoutwestie.. It’ll be interesting to hear how you get on with the fuel pump.
2.1psi will put less strain on the needle valves so they probably will last longer at that pressure. However they should operate ok up to 3.5psi. The choice is yours but if you’ve already got a fuel regulator I would be tempted to use it.
You're probably right Gooders, I was thinking it'd be one less join to potentially leak... I think the important thing is to regularly check the condition of all the fuel components.
As said previously, the carter pumps don't need regulators, the Facets do, my previous owner relied on just the valves with a Facet pump and they started sticking soon after I got the Bus, I truth they may well have been sticking for him, but I will never know. My Bug uses a carter and it's spot on PS a shut off solenoid is a good idea, for lots of reasons
I have switched to a Carter as the Huco i had fitted starting leaking after a couple of years. Also being a rotary pump its a consistent pressure compared with a diaphragm pulse pump like the Huco. Only downside i have heard is that although an American brand the Carter pumps are now manufactured in China Time will tell.
I fitted the Huco and (without tempting fate) all seems good after a short drive. Used a friend’s exhaust analyser before and after and his view was that hydrocarbon and CO levels were better. The previous fuel pump was a rotary of unknown make which was running without a regulator. I was struggling to get the ICTs set up which lead me to reviewing the whole set up including the pump. With a borrowed regulator temporarily fitted the previous pump was running at 4.5psi so decided to make the change. Interesting to read comments here and I’ll keep a close eye on the pump going forward.
