- Posts: 210
- Joined: June 24th, 2006, 1:39 pm
- Location: Oslo, Norway
The blue «layer» disappeared quickly - and I could find no scoring whatsoever. A bit surprised I measured the crank with micrometer, and found it to be round and within specified tolerances.
I still have this crank stashed away, but have not dared to use it, as I am not sure if it might have had some kind of damage done to the hardening or other...
I have two questions:
- What happened?
- Blue journals = scrap crank?
(Never took any pics, but ripped one from the web. I had bluing on all journals - just like the thrust area on the picture)
- Site Admin
- Posts: 5029
- Joined: June 18th, 2006, 9:31 am
- Location: Lincoln, UK
However overheating like that can bend the crank - so a runout check on the center main journal is vital...
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