classic motorcycle forum

Motorcycle Discussions => Identify these bikes! => Topic started by: MartinKratochvil on November 08, 2010, 05:54:27 PM

Title: Unknow engine
Post by: MartinKratochvil on November 08, 2010, 05:54:27 PM

Hi,
I need help to identify this engine, I thought it was JAP, but I did not find any similar type.

Title: Re: Unknow engine
Post by: cardan on November 10, 2010, 04:04:57 AM

"BIRMAL" (cast inside the magneto chain cover) was a trade name used by the Birmingham Aluminium Casting Co. of Smethick, just outside Birmingham. Firms like this would have supplied many manufacturers (even some of the larger ones) with their castings, so other than pointing to a British make from the Midlands it doesn't help too much.

Am I seeing things, or does the exhaust valve stem miss the tappet? I can see that the inlet stem is off centre, but this was often the case.

Leon