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fuel pump in tank

 
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chris79  



Joined: 29 Jan 2014
Posts: 551
Location: milan
PostPosted: Wed Jan 29, 2014 7:45 am    Post subject: fuel pump in tank Reply with quote
hello,
I wanted to know if anyone knows the technical characteristics of the fuel pump in the tank, the pressure and flow, I can not find them on the net.
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larchie  



Joined: 19 Jun 2003
Posts: 297
PostPosted: Thu Jan 30, 2014 3:52 am    Post subject: Reply with quote
If you know the in-tank fuel pump part number then the data might be available by using links below with the Bosch Fuel Pump Cross Reference Part Number Guide Book/Sheet

I can suggest some further sites to look if the pump is not on that list and if these other sites become restored in the future:

If you can get a correct Bosch part number for the in-tank pump Bosch fuel pump PN 928 608 013 00, the Porsche part which you are probably looking for, then the data you seek was available several days ago but is now off-line at Jenniskens.livedsl.nl which in part can still be accessed by using Google's cache which in Firefox is this URL:

http://webcache.googleusercontent.com/search?q=cache:0Di0DdAjt90J:jenniskens.livedsl.nl/Technical/Tips/5/MyTip547.htm+&cd=1&hl=en&ct=clnk&gl=us&client=firefox-a

According to the Bosch Parts Finder, if you enter the data for the 924 or 928 for '79 the equivalent of the in-tank pump is Bosch PN 69420 but that is mistaken as that part number turns out to be the in-line fuel pump for the 924 or 928. Likewise the in-tank pump is not PN 0 580 254 979 as reported on the 924.org site.

Another suggestion if you can find the correct Bosch part number for the in-tank pump it might be available on the PDF here which lists the litres/hour pressure for Bosch pumps: Fuel Pump Technical Data.

EDIT: Access to the Jenniskens.livedsl.nl just came back up this afternoon, and I can't find now the specification for the Porsche 924 in-tank or pre-pump which I thought I saw some months ago. The best I could find is flow rates for what seems to be an equivalent to the Bosch pump:

Quote:
translated from Swedish "52-110 flödar 90 l/h och 52-112 130 l/h enligt Biltema. Det mekaniska utförandet är okänt men de kan möjligtvis passa."
--->
"52-110 flow 90 l / h and 52 to 112,130 l / h according to auto parts store. The mechanical design is unknown but they can possibly fit."


Incidentally, there's a useful how-to on rebuilding the in-tank or pre-pump on that site as well:

http://jenniskens.livedsl.nl/Technical/Tips/Files/Porsche%20Fuel%20pumps%20R1.0.pdf

and towards the bottom of this page

http://jenniskens.livedsl.nl/Technical/Tips/7/MyTip756.htm
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chris79  



Joined: 29 Jan 2014
Posts: 551
Location: milan
PostPosted: Fri Jan 31, 2014 7:58 am    Post subject: fuel pump in tank Reply with quote
thanks for the very comprehensive answer, I found various information in the link you mentioned, there is no official description of the characteristics of the pump, but putting together the various information I think is a pump with a capacity of about 3.5 bar about 120 l / h
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