Fuel change over valve thread?

[Paul Dutton]

Originally Posted by Ron Pier

I think it's 1/4 BSP Tom, although the outside diameter of the thread is about 1/2". BSP is a strange system based on the inside diameter of the pipe. Ron

Hi guys
The thread will be 1/4” Para-Taper for the fuel lines and they are 1/2” on the oil cooler lines. These are readily available in brass off the shelf. I have them in stock if needed either in plated steel, brass or brass plated. Any hoses you need making up, I can make from patterns or pictures and dimensions supplied, in plain black rubber or braided fuel hose, with crimped fittings and external spring guard in the case of the oil lines

[Tom Millward]

Good to know, thanks Paul. I may need some oil cooler lines as I’ve used originals and have been informed that they have a tendency to split. I’ll get my engine back in the hull and give them a good look over. Don’t want to lose all my oil on its maiden voyage!

[Phil Waterman]

Hi

Have a question about relative position of the selector valve to the fuel tanks. Is it above the level of the top of the tank?

Reason I ask is that when the same valve is used on Chevy C60S it is mounted above the tank, and of course is on the suction side of the fuel pump . This location was the cause of a major intermittent fuel starvation problem with my truck. Some times after switching tanks air would leak in around the tapper of the valve.

Cheers Phil

[Lynn Eades]

Yes Phil they are slightly above the tanks.
I am told that jewellers rouge is the stuff to use, to lap in the brass tapers.

[Paul Dutton]

Originally Posted by Tom Millward

Good to know, thanks Paul. I may need some oil cooler lines as I’ve used originals and have been informed that they have a tendency to split. I’ll get my engine back in the hull and give them a good look over. Don’t want to lose all my oil on its maiden voyage!

No problem Tom, let me know if I can help
Paul