GaryM
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| posted on 22/7/15 at 08:27 AM |
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Marks on xflow crank, should I be worried?
The crank is from a 1600 xflow and measures OK for wear and bentness.
However, i'm not sure if I should be worried about some marks on two of the big end journals. What do you think?
Cheers
Gary
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r1_pete
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| posted on 22/7/15 at 09:44 AM |
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There's a fair bit of scoring on those journals too, looks like its been run with dirty oil for a while.
The mark in pic 1 looks like its been stood with dirt trapped, and god knows how regular use could cause the marks in pic 2....
If it were mine I'd have it re ground before using it, as it is its likely to wear new bearing rather than bed in...
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cliftyhanger
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| posted on 22/7/15 at 09:44 AM |
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anything you can catch a fingernail in? the second pic looks liek there are some deep scratches across the journal?
I have used fine abrasive paper strips to smooth crank journals before, not ideal but that came from a proper old fashioned mechanic who really knows
how to build engines (and diffs/boxes etc) and the engine was fine for many thousands of miles. Not a thrashed car though, and your expectations may
be different.
Think about cost of a grind, it may not be bad in the scale of things.....
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Surrey Dave
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| posted on 22/7/15 at 09:48 AM |
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Leather Belt
I'm not sure if i'm making it up but , I thought people used to polish journals with metal polish and a leather strap/ belt?
Although those marks look a bit beyond polish.
I don't know what a grind and shells cost these days, but while its all apart might be a sensible move , then you know its ok.
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britishtrident
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| posted on 22/7/15 at 11:03 AM |
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Moderate scoring, I would measure the journals for ovality before putting any effort in the polishing them out, the odds are it will be worn oval
enough to need need a regrind.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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