Fuel pump rebuild

Need some help with a technical problem - ask away and let's see if we can all help.

Moderators: hot66, impmad2000, Nige

Post Reply
Dougieboy1
I luv DDK!
Posts: 885
Joined: Mon Jan 04, 2016 7:27 pm
Location: Definitely round here somewhere

Fuel pump rebuild

Post by Dougieboy1 »

i need a rebuild for my fuel pump (not the MFI pump but the little cylindrical pump, Bosch 0580970 001)

Anyone got contact details for someone that might be able to rebuild a spare pump that i have which is in a pretty knarly state - rotor is seized, parts of the pressure relief valve missing

Also, anyone got experience of the 'new' version of this pump sold by porsche and parts dealers? Reports from a couple of years back suggested it was not a good quality part (seemed to leak after a short period), especially give the cost of it....Have things improved recently?

Thanks

andrew
1972 911S
1944 VW Schwimmwagen (originally a Porsche typ128, eventually VW166)
A bunch of other crap (according to my wife)
stretch
Me and DDK sitting in a tree! KISSING
Posts: 2909
Joined: Thu May 21, 2009 2:54 pm
Location: Kent

Re: Fuel pump rebuild

Post by stretch »

Andrew,
do yourself a favour and buy new. I had three pumps done... none of them work.
The early pumps were Chinese made and leaked. My new pump from Porsche was £560.00. Now made in Germany and have a 3 year warranty.
Dave
70T barn find...... to ST.
1998 C2 996 Kettle
BILLY BEAN
DDK 1st, 2nd and 3rd for me!
Posts: 2328
Joined: Sat Oct 26, 2013 12:42 am
Location: Oxfordshire

Re: Fuel pump rebuild

Post by BILLY BEAN »

There are limits to the "rebuild" of the fuel pump. Cosmetically they can me made to look very good, seals and brush contacts are replaceable. However, once the commutator is worn the pump is a desk ornament as this element is not "rebuildable". As Dave says buy a new Porsche supplied pump.
Rust Never Sleeps
Dougieboy1
I luv DDK!
Posts: 885
Joined: Mon Jan 04, 2016 7:27 pm
Location: Definitely round here somewhere

Re: Fuel pump rebuild

Post by Dougieboy1 »

thanks for the wise words both!
1972 911S
1944 VW Schwimmwagen (originally a Porsche typ128, eventually VW166)
A bunch of other crap (according to my wife)
Nine One One
DDK 1st, 2nd and 3rd for me!
Posts: 2149
Joined: Fri Mar 01, 2013 11:45 am
Location: Kernow - good old Cornwall

Re: Fuel pump rebuild

Post by Nine One One »

You might find this thread useful........


viewtopic.php?f=2&t=52070&p=453965&hili ... mp#p453965


http://www.hardi.de/indexe.htm

or you can get them from these guys in Northumberland.

http://www.budgetchandlery.com/pump-12v ... tAodS3kA5A
Lightweight_911
Nurse, I think I need some assistance
Posts: 17999
Joined: Wed Nov 12, 2003 10:48 pm
Location: Worcs/W Mids border

Re: Fuel pump rebuild

Post by Lightweight_911 »

.

Unfortunately that thread & link refers to fuel pumps for carb-equipped engines - this thread is about the Bosch pumps originally fitted to mfi engines which require a much greater fuel pressure (around 14 psi vs ~ 3.0-3.5 psi for Webers) ...
Andy

“Adding power makes you faster on the straights;
- subtracting weight makes you faster everywhere”
Dougieboy1
I luv DDK!
Posts: 885
Joined: Mon Jan 04, 2016 7:27 pm
Location: Definitely round here somewhere

Re: Fuel pump rebuild

Post by Dougieboy1 »

Thanks Andy, when i read that, it referenced carbs, low pressure etc so good to have an expert confirm it is not relevant to the MFI system.

Have ordered a new pump - quite pricey to say the least. I have renewed the various o rings in my original so will keep that as an emergency spare!

Regards

Andrew
1972 911S
1944 VW Schwimmwagen (originally a Porsche typ128, eventually VW166)
A bunch of other crap (according to my wife)
Lightweight_911
Nurse, I think I need some assistance
Posts: 17999
Joined: Wed Nov 12, 2003 10:48 pm
Location: Worcs/W Mids border

Re: Fuel pump rebuild

Post by Lightweight_911 »

Dougieboy1 wrote:Thanks Andy, when i read that, it referenced carbs, low pressure etc so good to have an expert confirm it is not relevant to the MFI system ...
- I certainly wouldn't claim to be an expert - just pointing out that carbs & mfi have different requirements in terms of fuel pressure.
Dougieboy1 wrote:Have ordered a new pump - quite pricey to say the least
I think someone's making a hefty mark-up on those new pumps ... :shock:

.
Andy

“Adding power makes you faster on the straights;
- subtracting weight makes you faster everywhere”
Dougieboy1
I luv DDK!
Posts: 885
Joined: Mon Jan 04, 2016 7:27 pm
Location: Definitely round here somewhere

Re: Fuel pump rebuild

Post by Dougieboy1 »

compared to me you are an expert :P
1972 911S
1944 VW Schwimmwagen (originally a Porsche typ128, eventually VW166)
A bunch of other crap (according to my wife)
Post Reply