Cam chain tensioner /Wheel replacement

Gaius M · Post by **Gaius M** » Sun May 08, 2016 6:15 pm

Hello, i'm new here. it has been awhile but i am currently building a 63 CA77 with upgrades 66 engine, newer battery box/ battery ect... i had four dreams in the 80's so i had lots of spares, not now. anyhow, has any one come up with an answer to, or an aftermarket for the cam chain tensioner.

Gaius Medley

Gaius M · Post by **Gaius M** » Mon May 09, 2016 1:04 am

ok, i saw the G-man thread. nice work

SMBH · Post by **SMBH** » Tue May 10, 2016 2:39 pm

Not cheap but I fitted one of the Honda CB72 CB77 Cappellini 105 chain tensioner sprocket A it replaces 39mm roller and it fitted easy and works very well.

Gaius M · Post by **Gaius M** » Thu May 12, 2016 9:19 pm

ok, so i went the sprocket route. but for all of you who would rather turn down your old wheels, (G-Man style) but do not have a machine shop at your disposal i might suggest this." Honda CB72-77 Cappellini #110 cam chain tensioner sprocket 9mm OD bearing axle" [on ebay]. they have the 10mm axle also. with shipping under 30.00 dollars.

Tim Allman · Post by **Tim Allman** » Fri May 13, 2016 9:31 am

I too went the Cappellini route simply because I considered my rubber roller to be unreliable. It was showing chipping on the edges and was hard to the touch suggesting that it was getting brittle from all of those hours of immersion in very hot oil. The last thing I wanted was for the wheel to fail catastrophically and the sprocket will never do that. It is easy to install but you do have to be careful of which parts you buy because Honda did make some undocumented changes over the years.

G-Man · Post by **G-Man** » Fri May 13, 2016 9:56 am

You just have to make sure that the oil holes in the center pin and the inner race for the needle roller are aligned correctly or the needle bearing will be starved of oil and that could be a little more expensive than a disintegrating rubber wheel.....

Using a sprocket instead of the wheel is fine. Sprocket blanks are available for around $10 and with 1/2hr machining to bore them for the needle roller (about $5) will work well.

G

Gaius M · Post by **Gaius M** » Sun May 15, 2016 4:55 pm

Yes. make sure that the oil holes in the center pin and the inner race for the needle roller are aligned correctly or the needle bearing will be starved of oil.(a disintegrating rubber wheel)... well i really haven't seen that, my concern is little bits of rubber migrating around the bottom end. the cam tensioner wheel can be like a little dog shedding on the couch that stuff gets everywhere.