Crossflow crank wear
Discussion
Having now stripped my spare 1600 ready for rebuild I have found the crank to have never been ground.
The journals all look excellent with slight discolouration on the thrust side of the big ends.
The big ends are oval by 1.5 thou or 0.04mm. Given that this is very near the tolerance for a reground one any way I am undecided about having the crank ground.
What do you think chaps?
The journals all look excellent with slight discolouration on the thrust side of the big ends.
The big ends are oval by 1.5 thou or 0.04mm. Given that this is very near the tolerance for a reground one any way I am undecided about having the crank ground.
What do you think chaps?
Edited by studog on Monday 11th February 11:46
studog said:
Having now stripped my spare 1600 ready for rebuild I have found the crank to have never been ground.
The journals all look excellent with slight discolouration on the thrust side of the big ends.
The big ends are oval by 1.5 thou or 0.04mm. Given that this is very near the tolerance for a reground one any way I am undecided about having the crank ground.
What do you think chaps?
I would get a regrind, tuftride & lap at a place known for competent X-flow work like Burton's.The journals all look excellent with slight discolouration on the thrust side of the big ends.
The big ends are oval by 1.5 thou or 0.04mm. Given that this is very near the tolerance for a reground one any way I am undecided about having the crank ground.
What do you think chaps?
Edited by studog on Monday 11th February 11:46
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