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Andrew9146's Avatar
 
Join Date: Mar 2001
Location: England
Posts: 31
Fuel Pump

I have a six with webers.

My fuel pump looks a lot like this (photo from PP). There may or maynot be a picture here!



I am unsure as to whether it is the original (for fuel injection) or low pressure suitable for a six with webers. How can I tell?

I fear it is the original fuel injection pump but I can find no part number or other identifying marks on it.

Thanks for your help.

Andrew
Old 01-06-2003, 04:50 AM
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I think I need help with attaching images as well as fuel pumps!
I clicked on the button to attach a file, selected it etc. but where is it now?

Anyway, my fuel pump has the three inlet/outlets at the end of the cylinder and has two electrical connectors on the side near one end.

It looks just like the one from PP's catalogue for 4 cyliner cars.

Do the six cyliner fuel pumps look the same?

Andrew
Old 01-06-2003, 04:55 AM
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Sounds like a FI pump to me. The 911 carb pumps do look different from the 4 cylinder FI pumps, so if it looks like the pic of a 4 cylinder FI pump, then it probably is.

To use that high pressure pump with carbs, there is probably a regulator in the system somewhere. You will want to find and remove or adjust the regulator along with installing a fuel pump that is correct for your carbs. There has been quite a bit of discussion about which pump to use, do a search on this board to get some good info.
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Old 01-06-2003, 05:17 AM
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James,

Thanks for your reply. That's what I feared.

This is now an opportunity to spend some money on a new pump. PP don't seem to have anything to offer here. Can anyone recommend a (mail order) supplier?

BTW, we have a similar background in cars. Whilst I don't have any Jags. my 914 is a '76 now fitted with a six. My first car was a VW Beetle 1300 from 1966 (My father purchased it new).

Andrew
Old 01-06-2003, 06:17 AM
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Holly inline fuel pump HLY-12-801-1 97 gph 7 psi $95.95
Or Holly 12-802-1 110 gph w/regulator, 14 psi $105.95
Old 01-06-2003, 06:25 AM
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Andrew, the Bosch 914-6 pump (carbs) looks exactly like the 4-cyl ones (FI) to me. You would need to look at the part number to see. There is also I believe a Hardi fuel pump for carbs that was stock and would look different.
Mark S.
'70 914-6
Old 01-06-2003, 07:03 AM
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Oops, I forgot. Thanks Mark for keeping me honest. There are two different electric fuel pumps for the 911 and one of those was also used in the 914/6. Better check the part number before spending any money.
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Old 01-06-2003, 07:24 AM
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The only markings on the pump are on the opposite end of the cylinder to the fuel pipes.

There is a number: 0580 960009
There is the number 024 inside a small circle
There are the usual 'Made in Germany', 12V, and a Bosch logo.

The number was not that clear to read. Do these give any clues as to it's nature?

Andrew
Old 01-07-2003, 03:09 AM
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andrew,

check out this thread, Webers and fuel pressure regulators, yes or no?

some great info, i think the # for the -6 pump is in there somewhere. also, do a search for "webers" on the 911 board and you will get some great info on tuning webers.

MAN!!! .... PP is such a great resource!!!

doug waters
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Old 01-07-2003, 04:52 PM
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The 914/6 fuel pumps that are stock look exactly like the 914/4 fuel pump. The only difference is that a four pump runs at about 28psi and the 914/6 pump runs @ about 5 psi. The part number for the correct Bosch pump for the six is 0 580 960 009(Bosch number) or 911 608 107 00(Porsche number).
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Old 01-07-2003, 05:32 PM
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Excellent,

Thanks Otto for the part numbers. I've therefore got a Bosch pump for a six.

Doug, thats a good thread from our friends on the 911 forum. thanks for that.

The reason I'm questioning the fuel pump right now is that I've purchased Weber rebuild kits from our friends here at PP and I'm therefore chcking the whole fuel supply/pressure issue before tuning them up. Correct float height is the next thing! Can't wait for the warmer weather.

Thanks to all for their contributions.

Andrew
Old 01-08-2003, 05:01 AM
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On the original 914/6 Bosch (009) pump, (I am looking at one right now) the inlet for the feeding line from the tank (where there is an S on the pump) is larger than the other 2 outlets . This is a major difference with the FI pumps (I have 6 of them) of the 914-4 whose 3 inlets/outlets are of the same diameter.
Old 11-08-2008, 11:04 AM
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Old 11-08-2008, 11:04 AM
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