SU diaphragm type petrol pump

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simonmarsh
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Location: Near Bristol

SU diaphragm type petrol pump

Post by simonmarsh »

Has anyone tried using an SU diaphragm type electric petrol pump? I read in practical classics recently that they are quieter than most and only pump petrol when required rather than constantly. I currently have a pertronix(?) type which works well but is very noisy despite being mounted using rubber washers between it and the chassis
1980 2 litre CU petrol engine 4 speed gearbox (Devon Moonraker)
1973 1303S Beetle
1965 Karmann Ghia coupe

davidoft1
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Re: SU diaphragm type petrol pump

Post by davidoft1 »

They’re standard fitment on lots of cars, pretty reliable and low pressure for use with carbs , they are fairly quiet

simonmarsh
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Posts: 66
Joined: 30 Jun 2020, 09:50
80-90 Mem No: 15712
Location: Near Bristol

Re: SU diaphragm type petrol pump

Post by simonmarsh »

Thanks very much
1980 2 litre CU petrol engine 4 speed gearbox (Devon Moonraker)
1973 1303S Beetle
1965 Karmann Ghia coupe

silverbullet
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Re: SU diaphragm type petrol pump

Post by silverbullet »

They usually respond well to a hammer if the trembler contacts get dirty...but since a carb wbx engine has a perfectly good mechanical pump integrated into the design, why reinvent the wheel?
1985 Oettinger 3.2 Caravelle RHD syncro twin slider. SA Microbus bumpers, duplex winch system, ARC 7X15 period alloys

simonmarsh
Registered user
Posts: 66
Joined: 30 Jun 2020, 09:50
80-90 Mem No: 15712
Location: Near Bristol

Re: SU diaphragm type petrol pump

Post by simonmarsh »

I wouldn’t normally but 1980 is air-cooled and was running on an electric pump when we got it
Thanks for the reply though
1980 2 litre CU petrol engine 4 speed gearbox (Devon Moonraker)
1973 1303S Beetle
1965 Karmann Ghia coupe

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