Fuel fitting sizes and adapters...

[Knanthrup]

I was hoping someone could clear up some confusion of mine on fuel fitting sizes. I\'m looking through Summit trying to plan out what I need to run everything from the pump then regulator and to the carb but I\'m having some trouble with sizes. My fuel pump accepts 1/2\" fuel inlet and outlet sizes, and I haven\'t purchased my regulator yet but most of them I see only accept 3/8\", although I did find a few that would take 1/2\" but considerably more expensive.



Anyways, almost all the fittings I see in Summit are rated by -6AN, -4AN, -8AN, etc. and I was wondering which AN type is the same as 1/2\" and which is the same as 3/8\". I\'m not exactly sure how I will need to run my fuel stuff, whether I should adapt the 1/2\" down to a 3/8\" for the regulator and to the carb or if I should stick with the 1/2\" and get the 1/2\" regulator as well. Either way I need to figure out these AN sizes because the pump has nothing threaded into either end and I have to run the hose to something..

[IceQueen]

Do yourself a favour and get your fittings at a local auto store that way you can guarantee you get the right size.

[dynodave]

the AN number indicates the size of the fitting in 1/16\'s of an inch. i.e. -4 AN = 4/16 or 1/4,-6 = 6/16 or 3/8 etc.If nothing else it will help you practice your fractions http://www.s10v8.com/images/smilies/icon_smile.gif.If you call summit and tell them what you have they can hook you up with all the fittings and hose you need.they also sell hose and fitting kits from pump to carb.HTH

[Knanthrup]

Cool, thanks for the help. I might take IceQueens\'s advice and check with local parts stores but I don\'t really like their overpricing... if not I\'ll give Summit a call, I know they\'ve been really helpful in the past with their tech line.

[Trickten327]

Here is a good chart you can use as reference



http://www.summitracing.com/tech/links_home/index_an6to8.htm