Fuel cell venting question
- Thread starter sixgun86gn
- Start date
- Joined
- May 26, 2001
mostly metal lines........
We did my fuel system a few years ago, and to comply with NHRA you need metal lines, or they must be inside the frame where it passes the flywheel area.
The solution for me was to use 1/2" alum tubing and run it from the rear axle along the 3/8" factory supply line. Just unroll it and push it along the supply line by the "old" fuel filter until it come out into the engine compartment.
Install a compression fitting on both ends and do push lock to the pump and rail. Take the old fuel filter and cut off both fittings on the end. Get a steel -6 AN male fitting and weld it to the Saginaw fittings from the filter.
The welded fittings can then be installed on the 3/8" line and -6 push lock fittings allow it to be used as the return line.
Other than the damn foam from the fuel cell plugging my pre-filter, I have had NO fuel system problems.:biggrin:
We did my fuel system a few years ago, and to comply with NHRA you need metal lines, or they must be inside the frame where it passes the flywheel area.
The solution for me was to use 1/2" alum tubing and run it from the rear axle along the 3/8" factory supply line. Just unroll it and push it along the supply line by the "old" fuel filter until it come out into the engine compartment.
Install a compression fitting on both ends and do push lock to the pump and rail. Take the old fuel filter and cut off both fittings on the end. Get a steel -6 AN male fitting and weld it to the Saginaw fittings from the filter.
The welded fittings can then be installed on the 3/8" line and -6 push lock fittings allow it to be used as the return line.
Other than the damn foam from the fuel cell plugging my pre-filter, I have had NO fuel system problems.:biggrin:
- Joined
- May 26, 2001
They have not leaked in 5 years Don, and I check them often.
I agree for tranny lines with 300 deg. fluid and alum lines, not a good combination with a compression fitting.
I agree for tranny lines with 300 deg. fluid and alum lines, not a good combination with a compression fitting.
They have not leaked in 5 years Don, and I check them often.
I agree for tranny lines with 300 deg. fluid and alum lines, not a good combination with a compression fitting.
I have never tried compression fittings on aluminum lines for anything. I can only imagine. My experience with compression fittings on steel lines is 50% of the time, they will develop a leak sooner or later. Not a good track record to use on a fuel line. I'm just looking out for your best interest here. I'd hate to hear about a fire. In my world, compression fittings for anything aren't allowed.
Interestingly enough, compression fittings are illegal for use on steel automotive brake lines but compression fittings are the standard for teflon lined braided lines. ?????
I believe the difference is because, on steel line the the brass compression ring seals to the steel line directly and with the teflon line the teflon liner itself is the seal between the metal hose end and the compression ring.
An automotive technician can be held liable for accidents occuring from brake failures if he has used compression fittings on the steel brake lines ( this is a safety issue )
Food for thought !
On another note, I have found that C16 sitting in my fuel cell will evaporate after time ( and lose octane ) but I haven't experienced my braided steel lines leaking at all. Perhaps it's just a matter of time in my case.
For safety reasons alone, I wouldn't use compression fittings in conjunction with hard lines on my fuel system. I might go for years without an issue, but just one fire could be fatal or at least disfiguring.
George
I believe the difference is because, on steel line the the brass compression ring seals to the steel line directly and with the teflon line the teflon liner itself is the seal between the metal hose end and the compression ring.
An automotive technician can be held liable for accidents occuring from brake failures if he has used compression fittings on the steel brake lines ( this is a safety issue )
Food for thought !
On another note, I have found that C16 sitting in my fuel cell will evaporate after time ( and lose octane ) but I haven't experienced my braided steel lines leaking at all. Perhaps it's just a matter of time in my case.
For safety reasons alone, I wouldn't use compression fittings in conjunction with hard lines on my fuel system. I might go for years without an issue, but just one fire could be fatal or at least disfiguring.
George
I don't think it's as common as some say. The first car I used them on 15 years ago is still running the same lines. It sits all winter in his garage and no problems.
I've got them all over my present race car and every other one I've owned with no leaks at all.
I've asked a lot of other racers lately and suppliers as well and they all say no leaks through the hose.
I'm not saying it doesn't or can't happen but if it was a common problem I would think I would have run into it or talked to someone else who has.
Maybe we're all just lucky up here. I guess when and if it happens to me or someone I know I'll consider changing over to teflon. In the meantime I'll keep using it.
1000MileStylez
Black Sheep
- Joined
- Mar 25, 2003
You Need A Roll Over Vent Tube
How does this help with the vapors? I just have a line plumbed into the top and connected to my factory charcoal canister.
I should probably get one anyway just for safety. I would hope that I don't roll the car.
1000MileStylez
Black Sheep
- Joined
- Mar 25, 2003
if you want to run at the track you need one
V6UnderPressure
The Artist FKA Scott4DMny
- Joined
- May 27, 2001
Have any of you guys tried the Aeroquip AQP race lines? That is supposed to be for most fuels. And if you got the money try this one.
Aeroquip Startlite Racing Hose - summitracing.com
Aeroquip Startlite Racing Hose - summitracing.com
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