Adam87 Posted April 2, 2012 Share Posted April 2, 2012 Does anyone know what size AN Fitting the ends on a barbed JSK Fuel rail are. I tried measuring the thread opening, couldn't quite tell exactly as all I had to measure with is a tape measure. It looked between 5/8" & 3/4" which according to wiki is -10an or -12an. http://en.wikipedia.org/wiki/AN_thread#cite_note-0. I have searched online and on the forums and haven't been able to find anything. I am going with a -6an setup so I'll need an AN reducer at the rail. Unfortunately I don't know of any shops/stores around here that sell AN fittings so I can't go test one out and get what I need. Though I did find a site with cheaper prices than earl - http://www.allpurposepipes.com This Fitting (Not my car) Quote Link to comment Share on other sites More sharing options...
BluDestiny Posted April 2, 2012 Share Posted April 2, 2012 It could also be in SAE or metric. The fuel rail cockerstar made for me had 1/2 openings and I ended up going with AN fittings. I used a 1/2 to -8 AN fitting Quote Link to comment Share on other sites More sharing options...
Adam87 Posted April 2, 2012 Author Share Posted April 2, 2012 It could also be in SAE or metric. The fuel rail cockerstar made for me had 1/2 openings and I ended up going with AN fittings. I used a 1/2 to -8 AN fitting hmm. We'll that gives me more to think about. I guess my best bet is going to be to get a proper measuring tool. The barbed fitting(brass) all look to be NPT as is the Port the pressure gauge is install in. I got it used off ebay btw, thats why I'm unsure of the threading. Quote Link to comment Share on other sites More sharing options...
Kevin.pk Posted April 2, 2012 Share Posted April 2, 2012 (edited) I'd imagine the threaded potion in the rail is a NPT size. Most likely 3/8" NPT. Edited April 2, 2012 by 280zcar Quote Link to comment Share on other sites More sharing options...
Adam87 Posted April 2, 2012 Author Share Posted April 2, 2012 I'd imagine the threaded potion in the rail is a NPT size. Most likely 3/8" NPT. That would be a good guess. When I measure across the threaded opening it looks like 3/4". Guess I'll get a couple cheap NPT fittings from Lowes and test then order an NPT to AN adapter. Quote Link to comment Share on other sites More sharing options...
Adam87 Posted April 2, 2012 Author Share Posted April 2, 2012 (edited) Most likely 3/8" NPT. After looking at an NPT size chart that looks like its it. size| diameter | TPI | Pitch ---------------------------------------------- 3â„8 | 0.675 in | 18 | 0.05556 in (1.41122 mm) 0.675 in - which is why I couldn't tell exactly 5/8" or 3/4" diameter, its right in between. Thanks for the info guys. I'll check it out tonight after work and see for sure. Edited April 2, 2012 by Adam87 Quote Link to comment Share on other sites More sharing options...
Adam87 Posted April 2, 2012 Author Share Posted April 2, 2012 (edited) ... Edited April 2, 2012 by Adam87 Quote Link to comment Share on other sites More sharing options...
Adam87 Posted April 4, 2012 Author Share Posted April 4, 2012 (edited) I'd imagine the threaded potion in the rail is a NPT size. Most likely 3/8" NPT. And you were 100% correct. Got my 3/8 NPT to -6AN adaptors ordered. I can't wait to get this installed along with my Fuel Labs pressure regulator.! Edited April 4, 2012 by Adam87 Quote Link to comment Share on other sites More sharing options...
Adam87 Posted April 10, 2012 Author Share Posted April 10, 2012 Quote Link to comment Share on other sites More sharing options...
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