Fuel pump

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andrew
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Fuel pump

Post by andrew »

Hi, using a Facet fuel pump on a CU motor, standard Solex twin carbs.  Do I need a pressure regulator?  If so, which one?
1989 Ambulance, T25 syncro, 1980 Westfalia Joker

davidoft1
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Re: Fuel pump

Post by davidoft1 »

Yes , any will do , malipassi etc , just not the cheapest , get an adjustable one

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bigherb
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Re: Fuel pump

Post by bigherb »

Depends on which pump pressure it is? 1.5-4 psi no need, 4-6psi you need a reg.
1982 Camper 1970 1500 Beetle Various Skoda's, Ariel Arrow

andrew
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Re: Fuel pump

Post by andrew »

Think it might be 4-6, but I have a 1.5-4 as well.  Enough for the CU?  Next question: I'm missing the rubber collar that sits between the air filter box and the engine tinware, warm air intake I presume?  Know anyone who can supply?
1989 Ambulance, T25 syncro, 1980 Westfalia Joker

andrew
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Re: Fuel pump

Post by andrew »

Which Malpassi regulator would you recommend?
1989 Ambulance, T25 syncro, 1980 Westfalia Joker

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bigherb
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Re: Fuel pump

Post by bigherb »

Fit the 1.5-4psi pump then, it pumps the same volume of fuel as the higher pressure pump just at lower pressure.
1982 Camper 1970 1500 Beetle Various Skoda's, Ariel Arrow

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zoona
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Re: Fuel pump

Post by zoona »

I have fitted the 1.5-4psi pump with no regulator and it is seems to be running fine.
1987 Westfalia High Top Joker. DG SP
1993 MX5 turbo track car

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tobydog
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Re: Fuel pump

Post by tobydog »

Knowledge is power
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andrew
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Re: Fuel pump

Post by andrew »

Thanks for info, folks.  I've decided to fit a new mechanical pump and pushrod.  All now working beautifully, both Solexes tuned and behaving exactly as the book says.  I'm going to keep a Facet, filter and pressure regulator in the van, and leave the wiring in place just in case of failure.  This is a summer-driven car only, so wear shouldn't be an issue for some years.  The reason for a new mechanical pump with in-built regulator is to safeguard flooding the carbs as the needle inlet valves are notorious for leaking too much fuel into the bowl even when new.  While the engine fires beautifully whatever, economy will suffer.  And I do like the fact that the output from the pump is dependent on the rpm of the motor, I'm not keen on the electric pumps sending full pressure the whole time even when idling for the needle-valve reason previously mentioned.
1989 Ambulance, T25 syncro, 1980 Westfalia Joker

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