I have this carb that's a holley 4150 HP 650cfm mechanical secondary. I need dual feed fuel lines and bryant said the cheap chrome metallic one leak. And some are in the $60-80 range. Wanted to see what you guys recommend.
Bryan's right. I went through two of them before I opted to do this: ...That's steel 3/8" brake line with inverted flares, a brass T with two compression unions and a nipple. Total cost around $25, doesn't leak a drop.
brake line? I didn't know you can do that. that looks really nice, very neat. I can use the steel braid line I have right now and just get those unions. great job
yes, the steel ones do leak. Takes a miracle and lots of torque to make them not drip. The dual feed is what has me stumped at this point from adding the nitrous. I need a TRIPLE feed to run the nitrous, and didn't have the cash for the AN stuff to make one like Maxx has. The brake line....has promise...
I have my nitrous feed go from the regulator to the fuel solenoid. How are you planning on running it?
If you buy a length of 3/8" brake line and a tubing cutter, the ends that already come on the line will thread right into the carb. I did the flares myself, but I didn't have to.
Mo, you are getting off-topic. I was thinking a three-line split from a single line from the regulator. But now that you mention it, there is a third capped-off port on the regulator that I could run if off of, and probably less fuel flow issues.
Mine is a Mr.Gasket. Teflon tape on the threads and it is dry since day one. Think it was around 30 bucks. The cheap ones have always had leak issues. Just remember how much time and money you have in the car. A hundred bucks for a good product is pretty cheap insurance when your messing with fuel pressure on top of a nice hot engine.
Mine is a mr. gasket, as well. No teflon tape. Just around 150 ft/lbs of torque on those suckers to keep them from leaking. I will eventually go with AN braided stainless line, and make my own setup. But, trying to build a house, and all that crap...don't have extra money laying around right now.
Sorry should have been more accurate. The Teflon we use at work is for Gasoline/natural gas etc. It helps to torque the fitting since it actually lubes the threads. Its not the same as plumbing Teflon.
I did'nt know that using teflon tape was taboo for fuel lines. I have it at the inlet and outlet of my mech fuel pump. I don't see any leaks yet but since I have found out better I will be replacing the tape. What else is used in place of teflon tape? I also have it at my oil line sending unit; is that also a no-no?
