Fuel pump or rebuild kit

dougy · Post by **dougy** » Tue May 01, 2007 6:23 pm

My fuel pump on the 912 is incredibly lazy if fact so lazy it no longer pumps fuel!!!

Can you get a rebuild kit or is it a case of a new or second hand one any advice be greatfully appreciated

Nick Moss · Post by **Nick Moss** » Tue May 01, 2007 6:28 pm

I have replaced the mechanical pump with an electric Facet pump on a coupe of 12s

912uk · Post by **912uk** » Tue May 01, 2007 6:42 pm

Nick answer me this.. I have never been a fan of these pumps only because I wounder how useful they really are but do tell me different. happy to learn )

I was always lead to understand that the mechanical pump will only pump what fuel is needed at what ever given requirment. So if running fast more fuel pumped to match the requirement the fuel balanced by the floats in the carbs cuts off the supply when not needed...blarrrrddyyy blarrr and all that..

So what does the facet do when there is a larger demand for fuel? because as far as i knew the pump just pumps at a set rate.. my concern has been what if it doesn't keep up or how does it know more fuel is needed? other than the floats being lower and alowing more fuel to be alowed in the float chamber..

I'm not being funny it's a genuine question?

dougy · Post by **dougy** » Tue May 01, 2007 6:54 pm

no its a valid question if a canreplace with electric pump i may do.ive had troub le with too much pressure on my race aircooled motors but needed a pressure regulator i think a facet is about 3psi so about right.
Ill b honest i get the impression a new pump wouldnt be cheap anyway so in my budget minded ness i think an electric pump culkd be the way to go just blank off the old pump connections???

anyway incase someone has a spre you never know its all new to me

912uk · Post by **912uk** » Wed May 02, 2007 10:14 am

you can get a rebuild kit... I bought up a few pumps at swap meets in the US for like $10-$20 and I have rebuilt them with new kits and carry them as a spare in the cars

kit is like £15-20

dougy · Post by **dougy** » Wed May 02, 2007 10:32 pm

any idea where ican aquire such a kit??? id rather keep the og fuel pump its supposed to be there.I could try a local wholesale car parts place maybe they can tell me?? cheers dougy

912uk · Post by **912uk** » Wed May 02, 2007 10:57 pm

funny with my carbs probs today I came aross the kit I had spare.. I remember I got it from Roger Bray.. about £20

dougy · Post by **dougy** » Wed May 02, 2007 11:09 pm

ooo lovely i will be on the phone in the morning im dying to get my 12 running again now it has floors back in it wont be flintstone style anymore will post some pics up later by the weekend