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TR parts and Triumph parts, TR bits, Triumph Car Spares and accessories are available for TR2, TR3, TR3A, TR4, TR4A, TR5, TR6, TR7, TR8, Spitfire and Stag and other TR models are available from British car spares and parts company LBCarCo.

Triumph TR3 - fuel pump

My tr3a has at some point been fitted with an electric fuel pump. The origonal mechanical pump is still in situ and I was wondering if it is advantageous to have the electrial pump or is it better to return to the origonal.
P I Barnes

Have you checked whether the mechanical pump still works ? If the DPO couldn't fix it, maybe he put in an electric pump. He left the old one in place so the oil wouldn't leak out.

I have most of my original fuel pump still on the car with a new diaphragm kit installed about 70,0000 m iles ago. The pump has about 175,000 miles on it and it works fine. With the original pumps, there is a lever on the bottom and you can use your finger to pull on this lever like a trigger to prime the gas up to the float bowls.

Don Elliott, Original Owner, 1958 TR3A

http://mysite.wanadoo-members.co.uk/trebor/don3a_big.JPG
Don Elliott

Maybe your electric pump can be left in place for a spare. Or a convenient way to fill the float bowls after sitting a while. I see guys posting on the MG boards about using the common electric pumps with a switch wired in as a spare in case their SU (also electric) quits.

I've had such good luck with the original pumps. I have never rebuilt or replaced one. But kits are only about $20. If yours has the lever on the bottom, rebuild it.

SU carbs accept only up to 4 pounds of fuel pressure, I hear.
Tom

Thanks for the advise guys. I think I'll rebuild the origonal pump and remove the electrical on. I guess I was just wondering if the the electrical pump could have been fitted for better performance but if SUs will only 4 pounds this seems unlikely.
P I Barnes


.......if it 'aint broke......
Dave

This thread was discussed between 09/01/2007 and 13/01/2007

Triumph TR3 index

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