G80 Iron head colour

Samuel · Post by **Samuel** » Mon Sep 19, 2005 6:15 pm

I've just had a repair done (exhaust stub replacement brazen in) and wish to know what material is used to colour the head and barrel black (currently the head is bare metal having been bead blasted prior to brazing)

Sam Trenchard

itma · Post by **itma** » Mon Sep 19, 2005 8:40 pm

stove enamel was originally used, I have used hammerite smooth aerosol with success, stinks a bit when started up but lasts well.

Samuel · Post by **Samuel** » Tue Sep 20, 2005 10:55 am

Thanks for the quick reply. What do you use to prepare the surface? Bake it in the oven to drive off the oily surface?

Sam Trenchard

Biscuit · Post by **Biscuit** » Tue Sep 20, 2005 8:28 pm

Boil it in caustic soda, but oil the bore and valve seats as soon as it is sufficiently cool. Might we have a discussion on what shade of black?

itma · Post by **itma** » Tue Sep 20, 2005 8:58 pm

light black on the lightweights surely?
backtoblack for G15`s?

Samuel · Post by **Samuel** » Wed Sep 21, 2005 2:28 pm

It is a 1949 G80 (Iron head, hairspring valves)

Sam Trenchard