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CB160 Spun Camshaft Sprocket

CB160, CB350, CB360, CB450
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SteveAllenHonda
honda305.com Member
Posts: 6
Joined: Fri Aug 10, 2018 4:57 pm
Location: Pasadena California

CB160 Spun Camshaft Sprocket

Post by SteveAllenHonda » Fri Jul 05, 2019 3:36 pm

Hello All,
Went to purchase a Red 1969 CB160-been sitting many years.Hmmm-kicked over,good compression.Took it home,new battery,carb clean,points etc.Won't run.No spark-valves not
actuating.Suspected a broken camshaft chain.Engine apart and I see nice chain connected-
spun sprocket! I can see no marks of how to orient the correct degree if I were to get it welded in lieu of just purchasing another one.Have any of you encountered this?Also-I see no splines or evidence of how the sprocket was affixed in the first place!
Inquiring Minds want to know.
Thanks, Eric

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G-Man
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Joined: Wed Mar 25, 2009 5:17 pm
Location: Derby, UK
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Re: CB160 Spun Camshaft Sprocket

Post by G-Man » Sat Jul 06, 2019 3:05 am

I think they are just shrunk on. I have one with a loose sprocket, too. Should be able to copy the alignment from another sprocket/cam.

G
SteveAllenHonda wrote:Hello All,
Went to purchase a Red 1969 CB160-been sitting many years.Hmmm-kicked over,good compression.Took it home,new battery,carb clean,points etc.Won't run.No spark-valves not
actuating.Suspected a broken camshaft chain.Engine apart and I see nice chain connected-
spun sprocket! I can see no marks of how to orient the correct degree if I were to get it welded in lieu of just purchasing another one.Have any of you encountered this?Also-I see no splines or evidence of how the sprocket was affixed in the first place!
Inquiring Minds want to know.
Thanks, Eric
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160
'66 Matchless 350 '67 CL77
'67 S90 '77 CB400F

SteveAllenHonda
honda305.com Member
Posts: 6
Joined: Fri Aug 10, 2018 4:57 pm
Location: Pasadena California

Post by SteveAllenHonda » Sat Jul 06, 2019 10:49 am

Thank You for the reply.That makes sense-shrunk on.Wonder how many have rotated slightly over the years leading owners with timing problems and no easy way to ascertain the cause!
Eric

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