24-08-2024, 08:35 AM
Thanks all for your valuable information.
The stepped stud using a right hand 3 bearing centre main stud would seem the sensible way to go. I have measured the existing hole which is 11.4 mm so it seem that a 9/16 W tapped thread with the stud built up with weld might just work.
With regard to the cam centre bearing, the bearing is exposed to a splash feed via the stud hole and the oil passage to the bearing which has been opened up quite a bit with the removal of the upper main bearing housing. I am loath to drill any further holes in the sports block if I can avoid it. I might machine a small trough across the bearing surface to aid lubrication.
Any further thoughts on this approach?
Bruce
The stepped stud using a right hand 3 bearing centre main stud would seem the sensible way to go. I have measured the existing hole which is 11.4 mm so it seem that a 9/16 W tapped thread with the stud built up with weld might just work.
With regard to the cam centre bearing, the bearing is exposed to a splash feed via the stud hole and the oil passage to the bearing which has been opened up quite a bit with the removal of the upper main bearing housing. I am loath to drill any further holes in the sports block if I can avoid it. I might machine a small trough across the bearing surface to aid lubrication.
Any further thoughts on this approach?
Bruce