I have custom aluminum fuel tank installed between the rear frame rails. I have a fitting welded on top for a vent line. The question is, where should I run the vent line to? I was thinking I would just run it up inside the left rear wheel well (facing forward), with a couple of loops in it and stake it there where it would be pretty hard to see.
I've had other engine guys tell me I need to vent it back into the air cleaner. That would be a pain in the butt 'cause then I'd have to run the vent hose up the inside of the left frame rail.
FWIW, I also have my exhaust pipe coming out just in front of the left rear wheel.
Thanks,
Jordan
Fuel Tank Venting Question....
- Jordan
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- wesk
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Use the late M38A1 tank vent fitting. It has a poppet in it and I believe it needs to be mounted horizontal so if there is not room above your rear tank then use a 90 and a short line to mount it up at the front end of the tank.


Last edited by wesk on Tue Jan 24, 2023 10:41 pm, edited 1 time in total.
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
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45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules. ... _album.php
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