- Essential when rebuilding your engine to ensure that the upper vertical bevel gear has the correct backlash and position in relation to the camshaft bevel gear, these upper bevel shims fit between the cambox shell casting and the upper bevel housing -
Fitted in conjunction with the camshaft bevel gear shim, the ideal positioning is acheved when the gears are in line and there is a just perceptible gap (backlash) between teeth. - This is for a set of 4 shims in the following sizes : 0.004"/0.008"/0.012"
/0.020". (with a cost saving over buying them separately). Note: other sets are for 5 shims - but for these upper bevel shims we do not have any 2 thou shims, sorry, but actually you should find the 4 thou shim is normally the minimum you need to account for