 Fuel return with carbs- needed? |
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| tornik550 |
 Nov 24 2018, 02:17 PM
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#1
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Senior Member  Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None  |
I recently purchased a PMO carb setup for my /6. My car has never used a fuel return hose since I purchased it many years ago. Do I really need to use the fuel return? My car is just for street driving. I am not really even sure what the fuel return is used for. I am trying to avoid using it because the fuel return lines in the tunnel have been removed by the previous owner and I really don’t want to install new ones.
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| Chi-town |
Nov 25 2018, 05:05 PM
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#2
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Senior Member Group: Members Posts: 851 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
A dead head regulator is hard on high pressure pumps.
There's a return line there why not use it? http://www.carburetion.com/Products/Produc...?Part=31800.064 |
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| sithot |
Nov 26 2018, 09:41 AM
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#3
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Member Group: Members Posts: 451 Joined: 25-October 06 From: Virginia Member No.: 7,090 Region Association: None 
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QUOTE(Chi-town @ Nov 25 2018, 06:05 PM)  A dead head regulator is hard on high pressure pumps. There's a return line there why not use it? (IMG:style_emoticons/default/agree.gif) My 911 had a high pressure CIS pump and PMO regulator which I removed and installed the carburetor version, Bosch #05802544985, used on 911-T and the 914/6. There is no need for a regulator as the this Bosch pump is pre-set for optimal pressure and the return is already designed into the pump. As for a carburetor regulator, if you can get the pressure in range I'd prefer and Aeromotive or similar with return feature. Summit Racing or Jegs has a good selection. https://www.aeromotiveinc.com/product/low-p...eted-regulator/   |
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Posts in this topic
tornik550 Fuel return with carbs- needed? Nov 24 2018, 02:17 PM
914Toy
I recently purchased a PMO carb setup for my /6. ... Nov 24 2018, 02:30 PM SirAndy I am not really even sure what the fuel return is... Nov 24 2018, 02:46 PM Retroracer I run a similar setup to 914Toy. /6 engine running... Nov 24 2018, 03:20 PM
sithot You can dead-head with a pump making correct press... Nov 24 2018, 03:47 PM mb911 I am using the PMO return regulator for my test st... Nov 24 2018, 04:35 PM Mark Henry Needed? No
Better set up? Yes. Nov 24 2018, 04:59 PM 914Toy
Needed? No
Better set up? Yes.
Aaaaah!, mo... Nov 24 2018, 05:47 PM Mark Henry
Needed? No
Better set up? Yes.
Aaaaah!, m... Nov 25 2018, 09:43 AM Retroracer :agree:
- Tony Nov 24 2018, 05:04 PM brant I agree fully that a return system would the corre... Nov 25 2018, 10:21 AM bbrock I'm not seeing how there are more parts to fai... Nov 25 2018, 10:36 AM porschetub A constant running low pressure pump would benefit... Nov 25 2018, 02:30 PM VaccaRabite When my car had carbs I never bothered with a retu... Nov 27 2018, 08:52 AM |
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