KLR650 engines, generally speaking, enjoy profound service life. With adequate lubrication, lots of miles can be expected from the camshaft/cylinder head interface.
Machining camshaft journals in cylinder heads is not unique to Kawasaki KLR650 engines, I'm told. If replaceable camshaft bearings are an important, must-have feature, these properties can be found on other motorcycles of similar displacement, but at a much higher initial cost, I'd imagine, in comparison with the KLR's price point.
Bottom line, the camshaft bearing design decision, in service, has proven itself rather robust. Further, the manufacturing process appears efficient and cost-effective; wouldn't expect a change on future KLR650 models.
That said, I don't hold the KLR650 design perfect, by any means. Yet, I can live with a uniquely-fitted camshaft and cylinder head. YMMV!
Oh, yes; a question from my own curiosity: What, exactly, is "bitch-slapping?" If a special technique of slapping (e.g., forehand, or backhand, etc.), could you please describe/define the process? Post a link or imbed a video? Or, if bitch-slapping is simply ordinary slapping, but slapping of bitches, please clarify.
Last edited by Damocles; 11-25-2012 at 10:03 PM.