Broken Crankshaft Damper Cone

Technical advice Q&A

Topic author
Philippe-J.
Posts: 230
Joined: Mon Nov 27, 2023 12:14 pm
Location: Occitanie
France

#1 Broken Crankshaft Damper Cone

Post by Philippe-J. » Wed Oct 29, 2025 10:33 am

On dismantling the engine, I was happy to find no resistance when pulling the crankshaft damper off. But it was to discover that the cone was broken in 4 pieces, at the end of each slit.
As I never saw the engine running, I wonder what symptom this could be? Dead damper? Strongly unbalanced crankshaft? Or just unskilled prior mechanics?
If you have any advice I'll take it.
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Philippe-J

1967 S1(.25) OTS ... coming together
https://renov-ots-1967.over-blog.com/

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