foxtrot

Hi anyone know the thread size as well as the diameter of the schrader valve assembly. Not the 1/16th inner valve only replacement but the larger one that threads directly into the fuel rail?

I want to use that port for my fuel pressure gauge......

Thanks!

Sandmanbjj

Pretty sure it's 1/16 npl. That's if you are trying to thread something into the fuel rail.
I have my fuel line for my wet nitrous system coming off that and it's a 1/16 npl x 4 AN. The 4AN is the size that screws into my braided fuel line and the 1/16 npl is what screws into the fuel rail

uberstang1

I thought it was a 1/8th npt

Sandmanbjj

I just replaced my shrader valve with a nitrous Express fitting for my wet system. Here's the description of the fitting from the nitrous Express website. "4AN MALE X 1/16 NPT MALE (FORD FUEL RAIL FITTING)"
It would have been Great if it was 1/8th because most of the local shops have 1/8 but nobody had 1/16. Had to order mine