Triumph Sports Cars

engine swaps and other performance upgrades, plus "factory" V8s (Stag and TR8)

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tdskip
Tom Deutsch

(14 posts)

Registered:
02/20/2011 07:18PM

Main British Car:


Return fuel line for EFI system
Posted by: tdskip
Date: October 03, 2016 04:09PM

OK - next up on the conversion is I need to run a return fuel line for the Nissan EFI system.

I have a spare TR4a fuel tank that has been dipped so easy to fabricate the return line (in theory).

For those that have done this did you simply re-use the existing tank?

Where should the return fuel line go?

Does the tank need any other modification beyond the return fuel line?

Thanks!


BWA


(329 posts)

Registered:
04/13/2010 08:13PM

Main British Car:


Re: Return fuel line for EFI system
Posted by: BWA
Date: October 03, 2016 07:43PM

ON mine a 76 TR6 there is a line that connected to a charcoal canister in the engine bay.
I used this as a return line.
The tank needed a breather line so I added a nipple and ran a line to a carbon cannister that vents out in the rear fender well.
I do not know what the TR4a has for vent lines and carbon cannisters.

Cheers
Byron


tdskip
Tom Deutsch

(14 posts)

Registered:
02/20/2011 07:18PM

Main British Car:


Re: Return fuel line for EFI system
Posted by: tdskip
Date: October 04, 2016 09:32AM

Thanks!


Dan B
Dan Blackwood
South Charleston, WV
(973 posts)

Registered:
11/06/2007 01:55PM

Main British Car:
1966 TR4A, 1980 TR7 Multiport EFI MegaSquirt on the TR4A. Lexus V8 pl

authors avatar
Re: Return fuel line for EFI system
Posted by: Dan B
Date: October 04, 2016 10:16AM

We used a fuel pump from an F150 (external) and brought the fuel out the stock position. Return line brought it back into the tank through the plug in the bottom of the tank on the opposite side.


v869tr6
Ed Olson

(81 posts)

Registered:
10/25/2007 09:54PM

Main British Car:
69 TR6 487 CI Pontiac

Re: Return fuel line for EFI system
Posted by: v869tr6
Date: October 05, 2016 06:59PM

I have added a return line to two different tanks, I used a bulkhead fitting with the nylon/plastic washers.
Drilled the hole near the fuel inlets on my fuel cells, to get the inside washer and nut in place.
I would think pulling the inlet line with the float would make this possible.


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