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Message: [QUOTE="old man dave, post: 1513125, member: 1009"] I think it was Swamp's who said the hard 90* fittings had too much flow turbulence and the sweep bend tubing fittings were the way to go. Have to use a close radius sweep bend fitting since the wide radius fitting does not clear the firewall when using a fuel rail plug modified for an AN-6 male fitting.. You can make your own fuel rail adaptor plug to AN-6 by chopping off any steel AN-6 male/1/4"NPT adaptor fitting, drilling out the fuel rail banjo fitting and brazing on the male AN-6 tit with the hex section. Also bore out the hole in the male tit, depending on the brand, the hole can be pretty small. Earl's suck in this aspect. You can also bore out the fuel rail plug hole and side holes a bit. You can use either a female AN-6 hose end or a female JIC-3/8" tubing adaptor fitting. Either a JIC-3/8" tube flare or a tubing ferrule flareless adaptor fitting Diesel Innovations sells the fuel rail plug/AN-6 male adaptor. Aeroquip is the only one I found who makes a close radius sweep bend fitting. Aeroquip number for the aluminum one is FBM-14032 and the steel sweep bend is FBM1083. I finally wound up using the steel close radius sweep bend after kinking two of the aluminum ones. About $35 for the steel ones, special order from Summit Racing. The pictures in Summit's online catalog do not show the differences in the fittings. The sweep bend in the pics is the anodized aluminum one, the steel one is natural color. [/QUOTE]

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