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Forty Years of the Porsche 924 Turbo
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 Post subject: Re: In tank fuel pump wanted
PostPosted: Thu Mar 08, 2018 10:05 pm 
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Joined: Wed Sep 08, 2010 8:44 pm
Posts: 8805
Location: Birkenhead (UK)
Model: 924 na
Brilliant, well done :woohoo:

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1983 Silver(ish)/rust n/a manual - Project Candy, SCRAPPED
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 Post subject: Re: In tank fuel pump wanted
PostPosted: Fri Mar 09, 2018 3:47 pm 
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Joined: Tue Mar 25, 2014 12:15 pm
Posts: 1774
Location: North West Essex
Model: 924 Turbo S1
Good result! Enjoy a well deserved beer for saving yourself a small fortune :beer:


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 Post subject: Re: In tank fuel pump wanted
PostPosted: Fri Mar 09, 2018 3:53 pm 
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Joined: Sun Dec 30, 2012 9:36 pm
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Location: kent/thanet
Model: 924turbo s1
Lesworth wrote:
Good result! Enjoy a well deserved beer for saving yourself a small fortune :beer:


Cheers Les I certainly will if it works once installed :beer:


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 Post subject: Re: In tank fuel pump wanted
PostPosted: Fri Mar 09, 2018 4:25 pm 
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Joined: Tue Mar 25, 2014 12:15 pm
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Location: North West Essex
Model: 924 Turbo S1
I count myself lucky that I 'only' paid £180 for a new one back in 2014. Think they are north of £500 now :eek:


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 Post subject: Re: In tank fuel pump wanted
PostPosted: Fri Mar 09, 2018 8:22 pm 
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Joined: Fri Aug 03, 2012 9:05 am
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Location: Cambridgeshire
Model: 924 turbo S2 'S'
Chappers wrote:
Lesworth wrote:
Good result! Enjoy a well deserved beer for saving yourself a small fortune :beer:


Cheers Les I certainly will if it works once installed :beer:



Let us know how you get on, as I think I will have a go at mine..................

Cheers! :beer:

Allan


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 Post subject: Re: In tank fuel pump wanted
PostPosted: Fri Mar 09, 2018 10:24 pm 
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Joined: Wed Sep 08, 2010 8:44 pm
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Location: Birkenhead (UK)
Model: 924 na
I've never heard of anything going wrong but .......

I'd definitely bleed air out of the pump after fitting it. Tube+fuel+air+spark = pipe-bomb in my mind.

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Andy
1983 Silver(ish)/rust n/a manual - Project Candy, SCRAPPED
1982 Guards Red n/a manual - Project 66, SOLD.
1982 Garnet Red n/a manual - Project XLE (509 licensed, 1456 sorn'd)
1983 White n/a manual - Mr White Returns


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 Post subject: Re: In tank fuel pump wanted
PostPosted: Sat Mar 10, 2018 1:01 pm 
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Joined: Sun Dec 30, 2012 9:36 pm
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Location: kent/thanet
Model: 924turbo s1
Fitted last night and all running nicely, I did bench test it submerged in fuel as I was super paranoid about it catching fire, all seems well and £500 saved so happy days!, I prised the aluminium sheeth off from the top where the electrical connections are, then gently pulled on the outlet nozzle and it pulls right out and carefully strip it from there, my brushes where very rough and after lubricating became free with plenty of life left on them so fingers crossed it’s good for another few thousand miles, tools I used were
Grips
Long nose pliers
Toothbrush
Plus gas penetrating fluid
Dental picks(very cheap on eBay and really useful)
I did have to re solder the connections back on also


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 Post subject: Re: In tank fuel pump wanted
PostPosted: Sat Mar 10, 2018 6:24 pm 
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Joined: Thu Dec 14, 2017 12:45 pm
Posts: 561
Location: North Dorset
Model: 1985 924 2.0
I read a thing on this the other day; apparently its very unlikely you would get the stoichiometric ratio correct inside the fuel pump to cause an explosion even with a spark; the fuel vapour massively overwhelms what little oxygen gets into a pump when you change it. I worried about it too but I also looked up statistics for fuel pump explosions after repair and couldn't find any examples. Of course this could just mean that no-one found enough pieces to work out why it went bang!

This description is talking about Jet A (which is basically diesel) but the main points are still valid, its referring to TWA Flight 800, a 747 that was lost in the 90s.

http://shepherd.caltech.edu/EDL/projects/JetA/facts.html

This article explains a bit further specifically relating to car in tank pumps:

https://mechanics.stackexchange.com/questions/11191/why-is-there-no-explosion-risk-while-there-is-a-gasoil-pre-pump-immersed-in-the

Sorry to off topic there...

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 Post subject: Re: In tank fuel pump wanted
PostPosted: Mon Mar 12, 2018 9:55 am 
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Joined: Tue Mar 25, 2014 12:15 pm
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Location: North West Essex
Model: 924 Turbo S1
Chappers wrote:
Fitted last night and all running nicely, I did bench test it submerged in fuel as I was super paranoid about it catching fire, all seems well and £500 saved so happy days!, I prised the aluminium sheeth off from the top where the electrical connections are, then gently pulled on the outlet nozzle and it pulls right out and carefully strip it from there, my brushes where very rough and after lubricating became free with plenty of life left on them so fingers crossed it’s good for another few thousand miles, tools I used were
Grips
Long nose pliers
Toothbrush
Plus gas penetrating fluid
Dental picks(very cheap on eBay and really useful)
I did have to re solder the connections back on also

Good job - did you take any pictures? It would make a nice little write up for the magazine :grin:


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 Post subject: Re: In tank fuel pump wanted
PostPosted: Tue Apr 23, 2019 9:06 am 
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Joined: Mon Jun 17, 2013 11:35 pm
Posts: 2246
Location: The little old town of East Grinstead, UK
Model: '83 924 / '80 931
I think I'm doing this job this weekend!

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