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donald.lemay Samba Member
Joined: March 01, 2009 Posts: 484 Location: Rhode Island
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Posted: Sun Apr 11, 2021 12:34 pm Post subject: Main bearing |
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After marking up all my cylinders and top and I noticed my bearing has a shiny spot. Should I be concerned.
_________________ 66 13 window deluxe
2085cc
9to1compression
ported polished heads 40x36 valves
010 distributor
VS 42mm exhaust
40 IDF carbs |
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UK Luke 72 Samba Member
Joined: September 07, 2011 Posts: 2867 Location: Little Britain
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Ohio Tom Samba Member
Joined: February 09, 2006 Posts: 1660 Location: Marshallville Ohio
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Posted: Sun Apr 11, 2021 12:55 pm Post subject: Re: Main bearing |
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Yep, dry spot. No big deal. I wouldn't even touch it. |
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donald.lemay Samba Member
Joined: March 01, 2009 Posts: 484 Location: Rhode Island
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Posted: Sun Apr 11, 2021 1:12 pm Post subject: Re: Main bearing |
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I wiped the lube off- every time I break down I wipe clean and re lube🤦♂️ _________________ 66 13 window deluxe
2085cc
9to1compression
ported polished heads 40x36 valves
010 distributor
VS 42mm exhaust
40 IDF carbs |
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Back to top |
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modok Samba Member
Joined: October 30, 2009 Posts: 26789 Location: Colorado Springs
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Posted: Sun Apr 11, 2021 1:52 pm Post subject: Re: Main bearing |
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If you want to make the whole surface shiny buff it with a cotton rag.
Makes no difference to the bearing. I think people like it tho.
Problem? why? It's lead bearing. People are always asking about how their bearings look.
The bearings with a lead based overlay always look interesting. But the different shades and patterns, in most cases, have no meaning.
Aluminum bearings look the same all the time and nobody asks, but they should.
So how does the bearing feel?
It's been waiting years to touch a crankshaft and it's very happy the day has finally come. |
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chrisflstf Samba Member
Joined: February 10, 2004 Posts: 3446 Location: San Diego
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Posted: Mon Apr 12, 2021 8:38 am Post subject: Re: Main bearing |
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I would mic the bearing after case is torqued. I had a similar rub mark not long ago on a motor that had a very small particle imbedded in the case half which tweeked the bearing until clearance was only .0008". Removed the obstruction, but the bearing was already deformed. Crank would turn over easily with the case torqued. Replaced the bearing and all was well |
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mark tucker Samba Member
Joined: April 08, 2009 Posts: 23937 Location: SHALIMAR ,FLORIDA
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Posted: Mon Apr 12, 2021 9:52 am Post subject: Re: Main bearing |
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check crank for runout as well as taper /barrell shaped/hourglass shaped. the crank should leave no marks. check line bore too.and make sure all the hardware is fully torqued.the big and small ones. |
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