![](https://yamahaclub.com/forums/uploads/set_resources_30/84c1e40ea0e759e3f1505eb1788ddf3c_pattern.png)
msdavidson
-
Posts
2 -
Joined
-
Last visited
Content Type
Profiles
Forums
Gallery
Events
Yamaha Racing News.
Media Demo
Store
Collections
Classifieds
Posts posted by msdavidson
-
-
Hi I've just joined.
I've got a 1992 Diversion that I built up from a box of bits 5 years ago. I use it as a winter bike and it has now done 59000 miles. It has always had a clunky gearbox - the worst I've ever experienced - and the timing chain tensioner has no adjustment left so I've decided to change the engine for a lower mileage one. The engine in the bike has a number that starts with 4BR which is the Yamaha model number. The new engine I've got starts 4DU and seems identical in every way.
What is Yamaha model 4DU and what are the differences between the two engines.
Can any one help please?
msdavidson
XJ 600 Diversion engine number
in The Bar
Posted
That's useful. Thanks for the info.
msdavidson