simple question!! fuel line size?

[devin]

hi,

i have an 83 300d and i'm trying to figure out what size fuel line it uses.

i'm doing a diy project so i can't use the factory replacement.

thanks.

[mikeptag]

are you looking to replace with Viton?

[devin]

no not viton, just regular hose.

i'm converting it to run on straight vegetable oil.


but i can't figure out if it's 1/4" ID or 5/16"

Anybody know?

[devin]

metric...

no wonder i'm having problems.

for some reason i assumed that it was 1/4" because the hoses fit well over a barb, but now i'm thinking it's bigger since it's a 3 Liter engine.

[MonsieurBon]

I think it's 8mm i some places..

[Old300D]

It's 8mm, but 5/16" works fine. If you are running VO, I'd go larger. For my conversion I used 3/8", and 1/2" inside my heat exchanger.