Joined: Oct 2018 Posts: 91 Threads: 23
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I have a 2 bearing crankcase in generally very good condition, which I'm contemplating using for a rebuild.
However when thoroughly cleaning it, I noticed a potential problem- advice please. The casting for the camshaft centre bearing has a hairline crack. Does this mean that the crankcase is scrap, or is this a relatively under stressed area? I'm assuming that the damage was caused removing the bearing.
Thanks
Steve
Joined: Aug 2017 Posts: 125 Threads: 34
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I have used a crankcase with a metal plate bolted across the crack to add strength with no issues
Joined: Aug 2017 Posts: 743 Threads: 13
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I have just had a crack in a Nippy centre cam bearing housing welded up by Lazer welding.
The Lazer welding did not require the actual bearing being removed as the heat is incredibly localised in short pulses.
It is an expensive process though !! But Nippy Crankcases are expensive and rare as hens teeth in good condition,
Joined: Oct 2018 Posts: 91 Threads: 23
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Thanks Dickie,
That's interesting, but probably not cost effective for a bog standard crankcase ?
Is it really expensive, what are we talking about ballpark?
I guess as parts become scarcer, we will be forced to go the extra mile to make parts viable. But for now, I won't use it.
Thanks for the replies .
Joined: Aug 2017 Posts: 1,341 Threads: 34
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Location: Cheshire
Car type: Race Ulster, 1926 Special, 1927 Chummy, 1930 Box
The fact is it might be alright, but it would always be in the back of your mind. I’d get it welded.
Alan Fairless
Joined: Aug 2019 Posts: 449 Threads: 69
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Location: Oxted
Car type: Austin 7s
Not Nippy, it's a 65 Sports!
