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right side cylinder smoking

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G-Man
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Post by G-Man » Mon Aug 03, 2015 2:28 pm

Mike

There's a thread on here detailing all of the changes to clutches and plates. It might be worth a look.

Later friction plates have a metal backing so are probably a bit more robust.

G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

mike1969
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right cylinder smoking

Post by mike1969 » Mon Aug 03, 2015 6:37 pm

Gman, thanks read that. Very confusing.

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G-Man
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Post by G-Man » Tue Aug 04, 2015 3:13 am

Mike

Yes - unfortunately so. I think a later set of friction plates might help, though.

G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

mike1969
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Joined: Sat Feb 06, 2010 6:53 pm
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smoking

Post by mike1969 » Tue Aug 04, 2015 6:39 am

I'm going to pull it back apart. Maybe there is something I missed.

mike1969
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right cyl. smoking

Post by mike1969 » Thu Aug 06, 2015 6:24 pm

I pulled the clutch back apart and found 2 clutch plates stuck again and one suspicious looking plate. I roughed up the metal plates a little with sandpaper and replaced the suspicious plate .
I can find neutral when running again and all is well. (except for the new side cover leak it developed after taking it off twice. damn!)
The best thing about this is that I didn't have to put new rings in the engine. The Marvel Mystery Oil cleaned the crud off of the rings over the winter.

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G-Man
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Posts: 5678
Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
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Re: right cyl. smoking

Post by G-Man » Fri Aug 07, 2015 1:31 am

Mike

Heat cycling the engine combined with the Marvel Mystery Oil probably softened the gummy deposits and let the rings move again. Some of the ones I have taken apart are stuck for good, even after heating and cleaning in the ultrasonic clener. That stuff can get very hard.

Good news on the clutch. :-)

G
mike1969 wrote:I pulled the clutch back apart and found 2 clutch plates stuck again and one suspicious looking plate. I roughed up the metal plates a little with sandpaper and replaced the suspicious plate .
I can find neutral when running again and all is well. (except for the new side cover leak it developed after taking it off twice. damn!)
The best thing about this is that I didn't have to put new rings in the engine. The Marvel Mystery Oil cleaned the crud off of the rings over the winter.
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

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