7mm Fuel Hose Recommendations

tollertdi · Post by **tollertdi** » Wed Mar 03, 2010 8:44 pm

Have an '83 Rabbit. Want to replace both fuel hoses at the tank (both in and out hoses). Did some research and am not coming up with something that I feel comfortable with. Original is 7mm braided, but don't know the pressure rating?? Should I make sure it's FI hose? Do I have to make sure it's rated for diesel? Really want to stay with 7mm because 5/16 doesn't fit right (too big).

Post by **Fatmobile** » Wed Mar 03, 2010 11:41 pm

I thought the metal fuel lines were 8mm/5/16"
If they are 7mm; 1/4" hose should fit.

There is a tapered hose coming off the tank, for the fuel supply.
That's the hard oen to figure out but you haven't even mentioned it yet, ha.

82vdub · Post by **82vdub** » Thu Mar 04, 2010 12:06 am

You don't mention whether this is for a diesel or gas installation. If for diesel, the standard fuel hose will work fine. If it's gas, you'll need the fuel injection hoses to match the fuel injection system on the car (unless it's carb). If your running a really long run (back of car to front), the added thickness and wall strength of the FI hose is added security. Gas or diesel, works fine in the fuel rated hose.

tollertdi · Post by **tollertdi** » Thu Mar 04, 2010 10:32 pm

Sorry, '83 Rabbit Diesel. Never read anything about a tapered fuel line. Any details would be appreciated. They look the same on both ends.

From my looking around, 7mm seems to be the size. But is it supposed to be 8mm?

tollertdi · Post by **tollertdi** » Thu Mar 04, 2010 10:50 pm

Wow. Just found this jewel.

viewtopic.php?t=8112

So it's some kind of custom hose. Got the tank drained, so I'll mic the metal lines and find out what's really going on here.

Post by **Fatmobile** » Thu Mar 04, 2010 11:04 pm

I think the tank fitting is 12mm,..
maybe 11mm but they don't make 7/16" fuel line.
Sorry it's been awhile.

bscutt · Post by **bscutt** » Fri Mar 05, 2010 1:21 pm

I see those hoses on ebay from time to time so I know they are available somewhere. No idea whether the ones on ebay are any good or not. Maybe our forum owner Jack has them or has a reliable source. I would not want to have to change them often so get a good one.

davidpa28140 · Post by **davidpa28140** » Thu Mar 18, 2010 9:44 am

If you even have a passing interest in alternative fuels, now is the time to upgrade the hoses to something biodiesel compatable. I think grease works sell a complete viton conversion for around $100. You can find cheaper for sure, given some time and effort, but the two kits I've used were fairly painless.

Ira B · Post by **Ira B** » Thu Mar 18, 2010 11:05 am

davidpa28140 wrote:If you even have a passing interest in alternative fuels, now is the time to upgrade the hoses to something biodiesel compatable. I think grease works sell a complete viton conversion for around $100. You can find cheaper for sure, given some time and effort, but the two kits I've used were fairly painless.

I don't think the Greaseworks kit includes the tapered hose.

Been pondering a fix for this. A midline metal reducer should do the trick.