I watched a video of a line being made and they made the same suggestions about a straight cut and lubricate the fitting... he also said once it cross threads it is stuck, so you hand tighten at first. I'm not sure I like the idea of aluminum fittings, steel and brass have been reliable. I can also get nylon braided hose - basically the same specs but with a nylon braid instead of stainless steel. Whenever I consider long runs of rubber or push lock hose I wonder if a tech at a drag strip would bounce me for that. The closest drag strip is 85 miles away... I've only been twice in all these years, but it would be a pain to drive all that way and not get to race. I'm not sure about the filter either. On Mon, Mar 8, 2010 at 9:17 PM, Robert Adams <elcam84@xxxxxxxxx> wrote: > Have made but I used aircraft stuff which is allot nicer stuff than the > car stuff. Despite what some advertising says there is a difference. It is a > pain to assemble. Make sure your hoses are cut perfect and then use the lube > when screwing the fittings into the hose and same with the collars. The > steel and stainless ones are great but the aluminum ones are real finicky > and gall easily. > > To be honest on my TPI I used one section of AN hose and it > lasted a couple years before it started to get wet then spew fuel. I > replaced that spot with steel line (didn't need flex it's just allot of > bends). For flexible hose I used plain old high quality FI hose and it has > been perfect. Not a single problem. I also used aircraft/equipment style > hose clamps in pairs. They have a stainless sleeve with strain reliefed > edges and the outer band with the screw is a stainless strap. I have never > had one of those leak anything. The will hold up to 100s and low thousands > of PSI so 50lbs of fuel is easy especially using two. > > > Another couple issues with the braided AN hose is that it's very > abrasive. It has to be adel clamped and no rubbing of any sort allowed or it > will eat through anything it touches. It's also a pain to bend and get into > place like you want. I personally have had little luck with using AN hose > for gas lines as it seems to eat the rubber over time however it works great > with oils of any sort. > > > Robert Adams > > On Mon, Mar 8, 2010 at 6:17 PM, Chris Lindh <chrislindh@xxxxxxxxx> wrote: > >> Have any of you made AN braided hoses? I've never been interested in AN >> hose because of the expense, but now that I am in the performance parts >> business I have access to "private label" AN fittings and hose that is >> considerably less expensive. (I also have customers buying fittings & lines >> as a complement to carburetors I have in inventory.) >> >> When I plumbed the EFI on the '80 I used: >> >> 3/8" hard line for the feed line joined with connectors >> Pre-crimped Aeroquip hydraulic line for the soft connection to the filter >> and from the filter to the fuel rail >> Stock old feed line for the return line >> Aeroquip blue push lock hose from the fuel rail to the return fuel line >> GM OE EFI filter, Fram G3727 >> >> It appears the pre-crimped hydraulic hoses I used are leaking some fuel. >> They are also stiff and heavy. You can see one of the lines (not connected) >> in this photo: http://chrislindh.googlepages.com/010306003mid.jpg >> >> I'm also wondering if I should try a different filter, the fittings I used >> to adapt the filter to AN have a small orifice... Then again I have 6 or 7 >> new ones left... >> >> Thoughts? >> >> -- >> Chris >> > >