Left side of crankcase is the pressure release valve. Exiting from it is a copper line. Just wanted to confirm its OD. Coming up with a 1/4 inch. Is that correct or is it smaller?

Correct Henri. I make it 1/4" for breather and fuel lines. 5/16" for the oil pipes.

Ron

email (option): ronpier@talk21.com

Also 5/16" for the oiltank vent pipe..Ian

email (option): ian@wright52.plus.com

Thanks guys. Just happened to receive the tubing today. Fits perfectly. Just wondering if there is a source for that bullet shape brass plug that gets soldered? Amal parts maybe....

Hi Henri,Brass solder on tail,you should be able to knock these out for fun with all your lathes.Here's someone selling them if you haven't time
ebay 330935313296
cheers Rick

email (option): richardholt@rocketmail.com

Thanks Rick! Because of the thin wall I would rather buy it than make it.

Henri bookmark this firm. Most things you will ever need. Ron

http://www.vintagecarparts.co.uk/categories/vintage-car-parts-taps-pipe-and-fittings-fittings

email (option): ronpier@talk21.com

Thanks Ron, will do!