Electric Fuel Pump

[johno440]

Hi,

Anyone any idea on what fuel psi for electric fuel pump? Was thinking 4-6psi? Motor is in off-road buggy and I'm using a tail mounted tank behind engine.

Carbs are Keihin 41FCR's. Must I run a gravity tank feed setup? Or will the electric fuel pump work with a regulator?

[johno440]

Also found a 1-2psi pump...

http://www.ebay.com.au/itm/12-volt-SU-T ... 1c1bd28822

[johno440]

the other alternative I have is a vacuum pump with hand primer bulb

with the FCR's, can I run a vacuum pump using vacuum from the intake ports?

[alextrx850]

the other alternative I have is a vacuum pump with hand primer bulb

with the FCR's, can I run a vacuum pump using vacuum from the intake ports?

hI john, i would most likley go with the system that was with the bike from origional which is an intake vacume actuated diaphram pump...no need for a hand primer as the engine should fire with the fuel sitting in the float bowls.
I understand that you may not be aware of the origional fuel pump system as you are only using the engine,..however,its worth looking into as these engine carbs..-AND the FCRs... are pump fed from new..not gravity, which is why you might be thinking otherwise.

[johno440]

Thanks for that. Yeah I don't have any of the original fuel system which is why I was thinking of gravity feed.

Ok, I'll source an original TRX vacuum pump, and may also go the hand bulb route also just in case. Cheers for the input.

[alextrx850]

Ive seen some of the TRX engined buggies on u-tube and apart from the useable power, they sound just so good..
Know where you are..!

[Mincehead]

Cheap electric fuel pumps at low pressure (up to 4psi) are everywhere on the WWW and yes you can use them, some examples:

http://www.merlinmotorsport.co.uk/p1461 ... _info.html

Here`s Facet pumps in Aus:

http://www.aca-auto.com.au/pdfs/Facet-cat.pdf