ray dore Posted January 4, 2017 Report Share Posted January 4, 2017 Morning all Advice please. The mechanical fuel pump on my 4A delivers one and a quarter to two and a half lbs per sq inch. The electric pump I bought delivers 90 to120 litres per hour. I cannot convert lbs to litres or pressure to volume. I would like to know what volume I need and should I fit a regulator between the pump and the SU carbs? Has anyone fitted a electric pump to their 4A? Help please! Thanks Ray Quote Link to post Share on other sites
stuart Posted January 4, 2017 Report Share Posted January 4, 2017 Best to fit a regulator always when fitting an electric pump, Sytec do a good one or the Malpassi type with a filter bowl.A good idea to fit a collision switch too. Stuart. Quote Link to post Share on other sites
Fireman049 Posted January 4, 2017 Report Share Posted January 4, 2017 Hi Ray ~ I fitted my 3A with a Morris Minor SU low pressure electric pump in the engine bay. No problems. Tom. Quote Link to post Share on other sites
Peter Cobbold Posted January 4, 2017 Report Share Posted January 4, 2017 I use one of these to drop the preesure from a Facet pump to suit the SU, set around 2psi http://www.glencoeltd.co.uk/pro-fuel-pressure-regulator-1-4-bsp-unions/ Typical petrol BSFC ca 0.4lbs per hp per hour. So max flow for 100hp will be around 18kg per hour, or about 23 litres per hour. Peter Quote Link to post Share on other sites
ray dore Posted January 5, 2017 Author Report Share Posted January 5, 2017 thanks for the feedback ray Quote Link to post Share on other sites
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