Spannerama suggests lubrication improvements in that two angled holes in the timing chest wall of 1/8" leading I suppose to the annular space (If you have 2 bushes ) between the front pair of camshaft bushes it also mentions the rear camshaft bushes can also be given this treatment, but gives no details. Given the holes will be countersink to catch the oil I wonder in passing if 1/8" is too large and if anyone has experience of this mod I would be interested in their comments and experience
