T?cam Head Service Bulletin.

[clemf]

I've had a problem with excess oil from the breather pipe being sucked into the engine with the result of lots of smoke. I've heard there was a service bulletin issued in the late sixties that recommended drilling a hole in the head from the top into the breather chamber. Has anyone come across this, have any details or has got the same problem?

[types26/36]

Clem,
Go to www.gglotus.org then to Tech section, under Twin Cam you will find an article "oil scavenging" this may be what you are looking for.
Regards Brian.

[clemf]

:huh: Thats the right one but the diagram is so bad you can't make out the dimensions and I don't like the idea of guessing where to drill the hole !