Few people are aware that the cylinder head design on the XS650 comes from the Toyota 2000 GT sports car, the engine of which was a highly modified Toyota straight six developed by Yamaha. (The car was featured in the James Bond flick shot in Japan, Dr. No?) The steel skull which forms the roof of the combustion chamber is also pretty trick, as it makes for stable valve seats and retains more heat (more combustion energy) than an alu combustion chamber would (not sure how much difference that makes though....). The engine is absolutely bullet-proof. I raced a Champion-framed XS on dirt tracks in the U.S. during the mid-seventies and never had an engine failure, nor did I ever see or hear of one letting go. That engine you built is a beauty! Re. the starter motor: one could fit the exhaust valve depressor used on the XS-1 to make it easier to turn over.
Thank you for sharing that information 👍 I had never heard of that car and what a lovely looking thing it is! I hope to have this build finished in the next few months and will have an update video soon.
@@danryan4997 No worries fella, it was well worth the wait. The standard of work going into this bike, more than makes up for the length of time between vids.
if you care about this engine, use different air filters. Watch a video by a RU-vidr who’s channel is called project farm. He tests effectiveness of different types of air filters, sifting flour into a box and sucking air through the filters, the filters that had the highest airflow rate, we’re K and N filters, they also Allowed 10 times more particulates to flow through the filter
