Just got finished plumbing my Demon carb and regulator to my fuel line. The bends were VERY tight using my holley regulator and regulator bracket. I am curious what eveyone thinks of aluminum lines for the fuel lines to the carb. I couldn't get steel line to bend as tight as I needed. I used aluminum with compression fittings with flares on them. Then finished it off with AN fittings attached to the float bowls. I am a little leary of the compression fittings but seems like my wrench buddies think they will be just fine since I am using the ones with flares.....I am using braded stainless hose from the regualtor to the pump and USCG hose to the tank....Thoughts/suggestions anyone?

BH

I don't see a problem since you are only running around 10psi or so.

10PSI!!!! no more like 5 psi.......

BH

You should be fine for those fuel requirements. Besides your fuel water separator will hold additional fuel for those longer runs.

Just so everyone is on the same page the fuel line from the pump to the carb or delivery device must be a steel line to meet all requirments by USCG and Ins. co. Seems as though lots of people including myself do or did in my case run steel braided line which might get you through a coastguard inspection if they do not know the full meaning of the way the rules were written or even have smarts to know what they are looking at.I to just bought a Demon carb and I am going to try cut and flair the steel fuel line that came from Merc. but I don't think I will have much luck doing a double flair which is stronger. If you used the aluminum and had it painted I don't think they would ever hold a magnet to it but if you are insured and there is a fire someone good might be able to prove that it was incorect then.Sorry sad but true. James

I understand the law the same way you do.....My main was to try and figure out if the aluminum line with compression fittings and flares would be as safe as the stainless.....

BH

I wouldn't worry about the aluminum holding the pressure... but I would sure as hell worry about vibration causing the line to crack at the fittings. I would also worry about any salt spray causing corrosion and then leaking...

The aluminum line is attached to a Holley regulator which is attached to the carb via a Jegs regulator bracket. The regulator is attached to the pump via braided stainless line. Pump to tank is USCG hose. Also no salt water here and motor is inclosed..

BH

Your fine..

Randy,

A) You're not legal B) and more importantly as soft as the aluminum line is just make sure to check it on a regular bassis as you do your other maintainence.

Hard Stainless Steel lines are the best way to do it, both for longevity, and legality.