Grand Prix 125
Main Motorcycle: 71 Bonneville
Join Date: Aug 2012
Location: Duluth, GA USA
Help with a gas tank fitting
I bought a Bultaco 175 tank, because I think it has the right look for my project. The vintage is ~1962. Can anyone give me a hint as to what the petcock thread might be on this tank?
The tank has a male fitting. I measure the major diameter as 0.462", which is very close to 12 mm. The threads are either 24 tpi or 1 mm. With only about five threads on the fitting, I just cannot tell which of the thread gauges matches exactly.
Can anyone tell me what thread this might be? My bargain tank will not be such a bargain if I have to pay to get a new bung welded to it.
Last edited by Magnum_J; 11-03-2012 at 12:34 AM.