Cam buckets

[jbr120]

I have recently stripped down the head of my 1200T and found that the cam buckets have a mixture of round oil drain holes and elongated drain holes, 3 of each, I assume there is a reason for this but what is it ?? 

 

[breganzane]

(needpics)

Usually the buckets have a single hole around 3-4mm in diameter going thru at 45deg at the top corner.  The bore in the head has a half-round groove down it's length.  The hole will be a vent to prevent pressure buildup in the spring cavity, and is also handy for removing the buckets.  The groove will assist with lubrication of the bucket walls as they spin around during operation.  That's my educated guess anyhow.

 

[redax5]

the holes changed slightly in shape and size over the years
Piet will know more precise details, I have never tried to work out which type belonged to which model, they all work

the buckets also changed in length around 1981 on to a shorter version then the early buckets

 

[CLEMTOG]

and dont forget the daft shorter valve spring period, (maybe they have all been irradicated?)
and the double valve spring kit uses a tappett (bucket) with a thinner wall
CLEM

 

[sfcpiet]

Long ones, short ones, thick ones, thin ones, take your pick.

If using stock springs, they are all interchangable, don't matter much if the holes are round or square.  The double springs require the thin-walled variety.

piet

 

[Dellortoman]

I think I'll change my last name to "Buckets"

Cam

 

[laverdakeith]

I think you should change it to "town ladies sing this song, doodah, doodah"


   

 

[markQLD]

I think I'll change my last name to "Buckets"

ay Cam,  i'm guessing ya more of a "Follower" these days ay?  8)

 

[Dellortoman]

@ Keith's post.

Hey Mark. I sometimes used to get called Shaft or Sprocket.

I know a bloke who was dumb enough to tell his mates that he wanted a cool nickname, not a crap one like "Badger". From that moment on he's been known as Badger.