This is sort of a general plumbing question, but I encountered it on my A4. I'm adding a polishing filter to my fuel line, and the mechanical fuel pump has a 90-degree fitting for the pump outlet. Naturally, that fitting points in the wrong direction when tightened. I considered just using a straight barb but that is problematic due to the cramped quarters. Any advice (or is it even possible) to get it pointing where I want it? See picture below: the furthest barb is pointing straight up--which is perfect--but it is not tight in that position. It becomes tight about a quarter turn later, which is just about the worst possible direction for this application.
90-degree pump outlet pointing the wrong way
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Originally posted by Dave Neptune View PostThose small pipe threaded fittings should give you a range of 360*...
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Another option is to put a short 1/8" brass nipple in the carb and then a female right angle barb fitting. With that config, you have two threaded surfaces that you can tighten against to help with the proper alignment.Thanks,
Ron
Portland, OR
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you are going to use hose in between...just get a long bit of hose and try to route it that way so it doesn't kink. I have put a small open end wrench on my NPT fittings to get them where I want to go, as Dave mentioned. My polish filter and fuel pressure gauge hang underneath, in between my mech fuel pump and the carb. I have also used a 1/8" short nipple out of the carb and/or pump with a 45° or 90° female to barb to re-route the direction too. Sometimes it is not always pretty, but if you are already sealing 2 or 3 threads, sealing 4 or 5 to route it the way you like is no big deal.
Edit - P.S.> Nice color on the carb & pump..that looks SHARP!Last edited by sastanley; 04-22-2020, 11:13 PM.-Shawn
"Holiday" - '89 Alura 35 #109
"Twice Around" - '77 C-30, #511 with original A-4 & MMI manifold - SOLD! (no longer a two boat owner!!)
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Originally posted by scratchee View PostI'm a little gun-shy because the MM instructions caution against cracking the body of the pump by over-tightening.
ex TRUE GRIT
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Originally posted by JOHN COOKSON View Post...I was also "gun shy" so I bought some gasoline proof thread sealer so I did not have to over tighten to have a leak proof seal.Last edited by scratchee; 04-27-2020, 08:42 PM.
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