Lovely sunbeam

Lovely sunbeam
Lovely Sunbeam (and Annierose) 88-99-PF
Showing posts with label camshaft endfloat. Show all posts
Showing posts with label camshaft endfloat. Show all posts

Friday, 29 April 2016

Cam gear endfloat "fix"



 Russell made me ring to add to the camshaft gear wheel.

The plan was to make it flush with the end of the cam gear shaft.

It is now bonded to the gear and the endfloat when measured on the engine is 0.05mm (with some of the float taken up with the lube) The tolerances are 0.02mm to 0.1mm.

I think its a Quaife gear but I can't find an adjustable version "on line" so don't know why the shaft is not right.
We tried to fit it in a combination of ways and this mod is the only solution that seemed to be right.








The previous owner had to grind down the bumps for the water pump bolts as they would contact the cam gear adjuster bolts. 3 of the bumps were ground down enough to break through.

minor repair attempted.

Friday, 22 April 2016

camshaft endfloat


While I was trying to determine the cam spec - I had noticed that there seemed to be excessive endfloat.

The thrust plate would not hold the cam in place and the only thing stopping the cam gear from grinding into the block was the camshaft end bearing core plug.

Eventually it was noticed that the cam gear shaft was the same diameter as the chamfered spacer.
The cam gear was removed (for the first time) and it was then possible to see the evidence that the original cam gear had a much larger diameter shaft.

If I reversed the cam gear on the cam then I was able to prove I would have the correct amount of endfloat.

As I haven't removed the gear or thrust plate until now - I haven't lost or misplaced anything. Note the Chamfered spacer is on the wrong way round in the photo.

I will try to make a bush to fit or find a suitable thrust washer.