05-31-2003, 05:39 AM
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Size of Fuel Port
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Naturally Aspirated
Join Date: Jan 2003
Location: Brampton, Ontario, Canada
My Ride: 1991 Daytona Shelby
Engine: SOHC 2.5L
Induct: Turbo
1/4: 0.000
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What are the sizes of the stock fuel port on the rail. I looked through many archives and found -6 AN for outside and -4 AN inside diameter. I have a fuel pressure gauge with a 1/8 NPT male end and am atempting to hook it up but whatever adapters and couplers I have(Russel) its leaking, bad. Just lost. . .the threads seem to be of different thickness?
Coupler is -6AN female - female doesn't go well on rail or gauge, might have stripped the outside threads on port
Adapter is -4 AN male to 1/8 NPT male, fits inside coupler on -4 AN side but I don't need this adapter.
Like I said the coupler seems to fit both the 1/8 NPT gauge and the fuel port (-6AN) but its definetely a bad fit since its leaking. . .
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