Petcock thread size

Discussion in 'General Questions' started by redpiper777, Dec 28, 2008.

  1. redpiper777

    redpiper777 Member

    Hi all ,I'm almost done with my custom fuel tank and heading to the hardware tomorrow...Im looking to braze in a coupler to thread in the petcock. Anyway, I bought a Chris Hill CH80 2 stroke and was wondering before I have to try every nut in the store if anyone knows the threading size on the fuel petcock. I dont know if its metric but guessing it is cuz of the whole china thing. Also does anyone know if there is a better than stock petcock out there...I know I could go with a motorcycle part but dont want to spend that kind of money. Thanks

  2. Flapdoodle

    Flapdoodle Member

    I did away with the petcock and screwed in a 1/8 NPT to barbed 1/4"nylon fitting. From there tubing goes to a 1/4" needle valve. The nylon screwed in nicely, but Teflon thread tape was still necessary to keep it from leaking. An iron 1/8" NPT plug sort of screwed in, but it was very tight.