Why are you fitting a mk2 cam by the way. 
Got one cheap on here which is better than the one i have sitting around at home, but the new one has an unground bearing in pos three which is baffling me

It has the same part no as the other PB cam i have but different bearing size?
Any way had old cam in my engine but found it to lower MPG which was bad for Daily driving but had a lot better pick up and more umpf now the old tug has been relegated by London transports finest i thought i would shove it back in as it was time for a new belt etc.
With regards to the bottom sprocket i am going to drill the threads out and re tap them M10 when i have it off next that way it wont cost me anything and i wont have to climb about in the Garage roof
