Vintage and Classic Hondas

cam chain tensioner

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katman
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cam chain tensioner

katman
Hi All,
Hope everyone had a good Christmas. I have started taking my 77k apart to redo like my 75.
I have the engine a on the stand now. Is there anyway to take alook at the cam chain brkt and
tensioner(rollers) without removing the head. I fill one of them is worn and want to fix now. It had
a good rattle when first started, but went away as engine speed increased or when warm up.
I have adjusted it everyway possible. Carbs were synced. Pulled oil pan and it was clean.
TOOLS1
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Re: cam chain tensioner

TOOLS1
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The best you can do without removing the head is to look down the tunnel with a flashlight. From what you described of the noise, I would recheck the carb sync, and do a compression test.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
katman
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Re: cam chain tensioner

katman
Thanks Tools, I'll check it with a flash light. Bike runs great, acceleration, etc. Plugs are nice and tan.
Should I still do a compression check.
Lucky 1
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Re: cam chain tensioner

Lucky 1
In reply to this post by katman
You have rollers that are 40 years old and all those little bits of rubber can get in the oil pump screen,the crank oil journals to the main bearings, and the oil restrictors in the cylinder head, and cause major damage.

You need to remove the cylinder head and take
 it out and put in a new one.

Also check those two oil restrictors in the back of
the cylinder head and the oil pump screen for
rubber bits.
On a Roadstar Adventure.
shinyribs
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Re: cam chain tensioner

shinyribs
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It's possible the rattle was just clutch rattle. Clutch rattle subdues with heat and rpm. The oil rushes thru the clutch easier and helps to muffle it when it is warm and flowing easily.Cold-they bang around pretty loudly.


katman
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Re: cam chain tensioner

katman
Okay, Rollers look okay just hard. Sump and screen were both clean. No shavings are anything.
Chains seem to look allright.  Should I go ahead and replace tensioners.
Lucky 1
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Re: cam chain tensioner

Lucky 1
You mean the tensioner rollers.

Look at them very close. Magnifying glass if necessary.
 Do you see any cracks or pieces missing?
On a Roadstar Adventure.
katman
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Re: cam chain tensioner

katman
No, No cracks or pcs missing.
TOOLS1
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Re: cam chain tensioner

TOOLS1
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katman wrote
No, No cracks or pcs missing.
I would not worry about them then.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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