81 Honda CM 400 T discussion forum: RE: Parts question -- Please help.
Title
RE: Parts question -- Please help. 
Entered by
Martin Jalbert 
Date
2009-01-09 06:23:09 
If any camshaft related part broke at 5000 miles and went loose into the engine bottom, the timing chain tensionner is the prime suspect. Loose parts are quite unlikely at such low mileage, unless someone did unscrew and dropped in or broke the timing chain tensionner bolt for instance. If so, this missing part is visible. Recovering the broken piece requires to split the crankcase and it may already have caused extensive damages, because adjusting the tensionner is done with the engine running. It will at least cost you about 15-20 hours of labour, a new tensionner and new gasket set. You are better to look for a replacement CM400 or CM450 engine. 
We invite you to introduce yourself by a few sentences if you are new to
this discussion group. Enter your e-mail to join the forum and get notifcations on new messages. Or post your question,
answer or comment as a guest. We have just improved this discussion forum and expect the number of users to increase.
More 1981 Honda CM 400 T information
Our discussion groups are intended for short messages. We also welcome more extensive motorcycle reviews.
Bikez also recommends that you check out the technical
data and the riders' rating for the 81 Honda CM 400 T.
You can also rate it yourself. Use our efficient motorcycle
classifieds to sell or
buy
this bike. Your motorbike gets a high quality presentation. Ads are free.