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Author Topic: main crank bearings  (Read 687 times)

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Offline neilbobbett

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main crank bearings
« on: January 23, 2012, 02:16:14 PM »
HELP !!! If i am unable to colour code the main crankshaft bearings, how do I work out which ones i need ??  Cheers
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Offline MCRider

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Re: main crank bearings
« Reply #1 on: January 23, 2012, 02:19:31 PM »
Plastigauge. Very common problem, very common solution.

http://www.plastigaugeusa.com/

Available at auto stores for less than a few dollars.
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Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline 754

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Re: main crank bearings
« Reply #2 on: January 23, 2012, 02:20:58 PM »
Use the code engraved on the crank, and the one that is stamped on the case to select proper bearing if your crank is within limits.
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Offline MCRider

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Re: main crank bearings
« Reply #3 on: January 23, 2012, 03:31:01 PM »
Quote from: 754 on January 23, 2012, 02:20:58 PM
Use the code engraved on the crank, and the one that is stamped on the case to select proper bearing if your crank is within limits.
I think he is missing one of the 2 and can't put together a "color code".
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Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."

Offline MCRider

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Re: main crank bearings
« Reply #4 on: January 23, 2012, 03:31:55 PM »
PS: 9 times out of ten, if there is not much mileage on the parts, you'll end up with all greens.
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Ron
1988 NT650 HawkGT;  1978 CB400 Hawk;  1975 CB750F -Free Bird; 1968 CB77 Super Hawk -Ticker;  Phaedrus 1972 CB750K2- Build Thread
"Sometimes the light's all shining on me, other times I can barely see, lately it appears to me, what a long, strange trip its been."
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