Jap engine dating dating for beginners
engines in a couple of my small engines service manuals but not the model in your pictures. The company doesn't show up in my eighth edition of small engines service manual printed in 1966 so assume it went out of business around that time. Bill Discovered an air shroud that sold on ebay a couple of weeks ago that looks like the one on your engine. seriel number are C/1/72405/S at the bottom: BA68955 over the bottom underneath of the bracket for ignition: HB2 the top of the block:14831F. Prestwich Industries Ltd., Northumberland Park, Tottenam, London N17, England. Peter At the air case in front of the engine its a logo stamped in with the numbers 1945 ..maybe the date. Air Ministry wartime compressor set, which I believe was used for starting aircraft engines(? Bill It gets misspelt over here too Bill, don't worry about it! but there are no click into my magneto when turning it around ..maybe there are something wrong into the spring mechanisem thing ...i really dont know.Hi Does any body know how to date these small J A P motors, the block has the numbers engraved on the block 2S H 86920 1E.The whole bike and engine are a sort of updated technology version of the Brough Superior and the JAP engine.The engines are even made to mate up to Harley Davidson transmissions and can be supplied with fuel injection.The first one is bad in comparison in the explanation.
UPDATE The very first comment below points to another site building the JAP engines and actually building a new Brough Superior! On further reading the new Brough Superior site, the new engines are legally called JAP because the company has purchased the rights to the name and are, what might be termed, "continuations" since some components have been changed, the displacement has been increased, etc.
Cameron Racing Engines is a small company that machines various components for the Ministry of Defense over in England.
Having all of these very high precision machine tools sitting around and having a long standing interest in motorcycles, racing and hill climbing got them thinking about doing a little engine work.
The articles are very useful, with cutaway drawings etc. They also cover operating instructions and maintenance information like valve and points settings, and lots of other useful information. ) was still advertising copies of the handbook a few years ago when I got mine - I haven't bought a copy though, because the TOMM articles cover the engine very well.
The 2S, according to the article, is a vertical, side valved, air cooled four stroke petrol engine.