 73 fuel pump mounting question, It has been too long !!!!!!! |
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| David_S |
 Jan 20 2008, 01:05 AM
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Member  Group: Members Posts: 430 Joined: 11-May 03 From: Dimmitt, Tx Member No.: 680 Region Association: Southwest Region  |
I started tinkering with my project again a few days ago, and am in the process of getting the engine bay back together. Only problem so far is I had to replace the right engine shelf, and I cant remember how the fuel pump mounts ! I attached a pic of the area where the Haynes manual shows it to be, but the pic in the manual isn't the greatest. Also in the pic, what mounts in the slotted J shaped bracked above the motor mount? It has been too long ago since I tore this thing apart and I screwed up and didn't take enough pictures !!!!!! TIA
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| ConeDodger |
Jan 21 2008, 12:53 PM
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Apex killer! Group: Members Posts: 23,863 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California 
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In a properly maintained car you should not experience vapor lock. I suspect that Porsche relocated the fuel pump because they couldn't count on people properly maintaining their cars. In the back it is close to a source of heat and possible ignition for those cars that owners maintain poorly.
At the pressure in an EFI system vapor lock shouldn't occur with a properly maintained vehicle. It is easy enough to relocate if you have the proper mount but a pain to replace it and the fuel filter. That said, mine is up front. But it came that way... |
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| Dtjaden |
Feb 24 2014, 09:47 AM
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Member Group: Members Posts: 232 Joined: 25-May 13 From: Morgan Hill, CA Member No.: 15,915 Region Association: Northern California |
In 1973 I had a new 914. I was in Minnesota at that time. It would vapor lock frequently whenever the temp went above 85. My solution at the time was to install a second low pressure pump in the front trunk. So it was not just maintenance issues that caused the problem.
Never a problem with my new 1976. I would put the pump in the front as I am going to do when I convert my current 73 back to FI. QUOTE(ConeDodger @ Jan 21 2008, 10:53 AM)  In a properly maintained car you should not experience vapor lock. I suspect that Porsche relocated the fuel pump because they couldn't count on people properly maintaining their cars. In the back it is close to a source of heat and possible ignition for those cars that owners maintain poorly. At the pressure in an EFI system vapor lock shouldn't occur with a properly maintained vehicle. It is easy enough to relocate if you have the proper mount but a pain to replace it and the fuel filter. That said, mine is up front. But it came that way... |
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Posts in this topic
David_S 73 fuel pump mounting question Jan 20 2008, 01:05 AM
cwpeden I replaced mine and didnt know either, this is wha... Jan 20 2008, 02:33 AM cwpeden close up Jan 20 2008, 02:36 AM swl Here is the 'as installed' position. The ... Jan 20 2008, 07:51 AM
SirAndy
Here is the 'as installed' position. The... Jan 20 2008, 11:48 AM Cevan Why not relocate the pump to the front? Jan 20 2008, 06:29 PM ClayPerrine
Why not relocate the pump to the front?
:agree:... Jan 20 2008, 09:24 PM David_S
Why not relocate the pump to the front?
:agree... Jan 20 2008, 11:12 PM SirAndy
Why not relocate the pump to the front?
:agree... Jan 21 2008, 10:37 AM Phoenix914 I just replaced the mounts on my '73 because o... Jan 21 2008, 12:02 PM SirAndy
At the pressure in an EFI system vapor lock shoul... Jan 21 2008, 12:59 PM KELTY360
In a properly maintained car you should not exper... Jan 27 2008, 01:11 PM stephestrad
In a properly maintained car you should not exper... Jan 8 2014, 10:24 AM KELTY360
In 1973 I had a new 914. I was in Minnesota at th... Feb 24 2014, 10:34 AM swl I suspect that the original engineers located the ... Jan 22 2008, 11:42 AM David_S So ....going by the pic that SWL posted .....the f... Jan 27 2008, 11:14 AM swl definitely not the engine tin. it stays with the ... Jan 27 2008, 11:29 AM David_S SWL ......The small hole in my pic is about 1/4... Jan 27 2008, 11:39 AM swl My pump is not installed at the moment - would you... Jan 27 2008, 11:46 AM swl hmm. on your pic there are a couple of light spot... Jan 27 2008, 11:50 AM David_S A pic would be wonderful!!!! I d... Jan 27 2008, 11:56 AM swl just had a quicklook. I tried to grab a pic but I... Jan 27 2008, 12:20 PM David_S SWL ...not a problem. I know what hibernation mode... Jan 27 2008, 12:27 PM swl
Here is the (shitty) pic of the mounts. I'm ... Jan 27 2008, 12:48 PM JawjaPorsche I moved my pump to firewall twenty years ago and h... Jan 8 2014, 10:44 AM 914_teener :agree:
I moved mine exactly as it appears above... Jan 8 2014, 11:14 PM stephestrad Thanks to you both for the feedback and the locati... Jan 9 2014, 12:33 AM Shindog1961 I have heard that this pump location requires you ... Feb 23 2014, 11:58 PM 914_teener No problem with the fuel pump mounted on the firew... Feb 24 2014, 12:13 AM Shindog1961
No problem with the fuel pump mounted on the fire... Feb 24 2014, 12:23 AM |
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