Hey guys.
I was wondering what size an fittings were used? I will be useing -6 hose but dont know if I should tap it in 1/4 npt or metric. I will also be running the stock oil injection system so what ever I use it will be tight. I was thinking of 2 -6 90's by 1/4 npt but just what to see what luck others have had.

 

I tapped mine 1/4"npt it worked out perfect, but that was for hose barbs so i can't comment on the AN lines. I used 45 degree angles and they just cleared the oil metering injectors.

 

I've used -6 AN, 1/4" NPT 45* fittings with stock oil injection.

 

Use 1/4 NTP. It's much more common. You're on the right path....

 

I'm using a CJ Motorsport fuel system in my car, it's all AN fittings -6

 

Ive done the same, worked out problem free and easy to fit together with other fittings etc.