Fuel Pump - is this dead money??

[Kroggers]

I have to replace my fuel pump and found this on ebay - http://cgi.ebay.co.uk/FUEL-PUMP-TO-FIT-PORSCHE-911SC-PORSCHE-944-924_W0QQitemZ250100553919QQcategoryZ10408QQssPageN ameZWDVWQQrdZ1QQcmdZViewItem

Any one have experience with none Porsche/Bosch fuel pumps, or should I go OEM??

[unclebilly]

Search for a thread of mine from 3 years ago. I ran a Holley universal pump for a while. It was fine.

[Kroggers]

Thank you unclebilly, so you think I should be Ok with this universal pump?

[Tim Hancock]

I just bought this pump for my daughter's '77 924 (her pump is whining and on it's last leg) and it uses the same pump as my '79SC. I have not installed it yet, but the pressure sounds sufficient. Obviously with the internet, one does not have to blow $300+ on a pump from Porsche.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&viewitem=&item=120091966133

[Kroggers]

Thank you for the link Tim

[boyt911sc]

Kroggers,

If this fuel pump can deliver a fuel pressure around 65 psi (60 - 70), then it's a good replacement. Your CIS motor needs a high constant fuel delivery pressure and as the pump gets old over time (years), the delivery pressure deteriotes accordingly. Knowing some other specs of the fuel pump would be ideal.

TD

[tedder]

What happens to be the most visible (or aural) symptom of a deteriorating fuel pump? I have noticed that mine seems to be whining loud enough that I can hear it at idle...

Is a new pump in my near or not-so-near future?

[Tim Hancock]

Originally posted by tedder
What happens to be the most visible (or aural) symptom of a deteriorating fuel pump? I have noticed that mine seems to be whining loud enough that I can hear it at idle...

Is a new pump in my near or not-so-near future?

Others have commented that when they get real loud, their days are numbered. Had one go out (it still passed the flow test, but could not deliver enough flow under pressure..was a SOB to figure out why the car would not make it past 2500 rpm!) on my daughter's '77 924 (same pump as in the 911) 2 years ago and it was never as noisy as the used pump I bought from the pelican 924 parts board is now. I am worried that it will quit soon which is why I just bought the new one I linked to above.

My daughter's pump is VERY loud now but is still working (you can not only hear it at idle, but also while driving down the road, it is near the rear passenger side wheel).

[Gogar]

Originally posted by boyt911sc
Kroggers,

If this fuel pump can deliver a fuel pressure around 65 psi (60 - 70), then it's a good replacement. . . . . Knowing some other specs of the fuel pump would be ideal.

TD

I agree. The fuel pump in my '72 T (2.4CIS, though) had a different bosch part # by one number than the porsche(bosch) part #. The OEM part was HUNDREDS more than the other bosch one (a VW golf pump) but the specs were the same and it looks identical. I ended up buying the VW part and it works just fine.

Here's my thread about that:

Fuel pump gurus help?

I think you should try to find the specs on the internet and make sure whatever you buy will deliver enough gas to your engine.

[spuggy]

Originally posted by Tim Hancock
I just bought this pump for my daughter's '77 924 (her pump is whining and on it's last leg) and it uses the same pump as my '79SC. I have not installed it yet, but the pressure sounds sufficient. Obviously with the internet, one does not have to blow $300+ on a pump from Porsche.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&viewitem=&item=120091966133

Ah, the same guys I bought my Bosch 044 motorsport pump from.

Kroggers, I'd stick with Bosch, personally, your choice. You might find these links useful for tracking down Bosch specs, part numbers and superceded items:

http://apps.bosch.com.au/products/saa/efi_crossref.pdf
http://apps.bosch.com.au/products/saa/efi_techserviceparts.pdf
http://apps.bosch.com.au/products/saa/efi_vehicleapplications.pdf

[unclebilly]

I replaced the Holley with another Bosch hoping to resolve my warm start issue. It made no difference - there was no problems with the Holley Pump - it was ~ $100.

In fact i still have it as well as a spare Bosch.

[lyon]

I have been driving my 73t with MFI. I has gotten cold here again in Wisconsin and my fuel pump acts up when it is cold.

For some reason it leaks a bit of gas. When it is warm it does not leak.

I have a feeling that the o-rings are shot, this is an original pump.

Has anyone ever replaced the o-rings on a pump? Anyone with pictures of the process?

thanks.

[RoninLB]

Bosch told me it's not a good idea to rebuild fuel pumps or fuel distributors in the field. It seems like clearances are tight and critical. Guys do it but some say it's danger waiting to happen.

[RoninLB]

Originally posted by spuggy

http://apps.bosch.com.au/products/saa/efi_crossref.pdf
http://apps.bosch.com.au/products/saa/efi_techserviceparts.pdf
http://apps.bosch.com.au/products/saa/efi_vehicleapplications.pdf

thx

[Kroggers]

Thank you all.

[Kroggers]

Will a Bosch 0580254909 5 bar fuel pump be OK for my SC? Found one at a good price here in Sweden.

[RoninLB]

i need an outlet adapter to install an '88 911 FP in mine. Cost me about $18us.

my experience and of others around here is that they'll still run a few thousand miles after they start making more noticeable noise. No guarantee so i carry a spare FP.


if flow and psi/bar are ok then it should work. You could also install carbs and use the return line for any Bosch cell FP?

it's probably not a bad idea to replace the FP rubber isolators on the mounting and the short rubber intake line with P quality?

[spuggy]

Originally posted by RoninLB
thx

No problem. I forgot to put the motorspot fuel pump spec sheet in there, though:

http://apps.bosch.com.au/motorsport/downloads/fuelpumps.pdf

Amazing what you can find trawling around different national Bosch web sites...

[Rick Lee]

My Carrera fuel pump died and left me stranded in the middle of nowhere on a very hot day with limited cell reception, no water and only two cigarettes left. That was a bad day.

When the pump in my SC started making noise, I wasted no time in replacing it with an OEM Bosch one. I think I got it for $225ish.

[yel911]

FYI, I bought a rebuilt Bosch fuel because it was half the cost and it lasted a year and a half. I then learned that you don't buy rebuilt pumps!!