05-08-2020, 03:18 PM
Hi all,
After a long time sitting disassembled, I've plucked up some courage, and am starting to sort out my engine (never having done one before).
The first thing that needs attention I suspect is the rear main bearing. There's enough slop in it that I can feel it, and something was very noisy in the engine prior to dis-assembly.
Mounting a digital caliper to measure the vertical movement I can measure 0.12 to 0.13mm, depending on the rotation:
https://photos.app.goo.gl/eeqEfBmHLLUZtw71A
The only figure I've found re. play was that Jack French thought that 0.0013" clearance was "quite acceptable" - in this case does "clearance" equate to play?
I am pretty sure that it needs changing, but figured it wise to check first!
On the assumption that it is shot, what are the replacement recommendations? Can one get a sealed bearing replacement?
The engine is a '34, two bearing.
Thanks!
James
After a long time sitting disassembled, I've plucked up some courage, and am starting to sort out my engine (never having done one before).
The first thing that needs attention I suspect is the rear main bearing. There's enough slop in it that I can feel it, and something was very noisy in the engine prior to dis-assembly.
Mounting a digital caliper to measure the vertical movement I can measure 0.12 to 0.13mm, depending on the rotation:
https://photos.app.goo.gl/eeqEfBmHLLUZtw71A
The only figure I've found re. play was that Jack French thought that 0.0013" clearance was "quite acceptable" - in this case does "clearance" equate to play?
I am pretty sure that it needs changing, but figured it wise to check first!
On the assumption that it is shot, what are the replacement recommendations? Can one get a sealed bearing replacement?
The engine is a '34, two bearing.
Thanks!
James