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Cam Chain Tensioners

Old 04-29-2017, 08:17 PM
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Cam Chain Tensioners

I just got my bike, last weekend. The prior owner said the auto chain tensioners were replaced with manual tensioners...

The CCT on the rear cylinder looks just like the manual tensioners I see online. Cool.

However, the front cylinder...well, someone sealed the two bolt holes with epoxy (or something) as well as sealing (with the same stuff) the hole through which the tensioner bolt (on the manual tensioner) runs.

My understanding is that auto-tensioners are 'bullet' looking things, and manual-tensioners have a long bolt that sticks out an inch or so, with a lock-nut on the bolt.

To not have either, the 'bullet/auto' or the 'manual' tensioner is a condition I've not been able to find any information regarding. WTF?

I'm looking for education, and to try to figure out what's been done to the front cylinder.

The bike runs like a champ. Going on 22K miles.

Thanks for your help...

Alan

Last edited by AlanS; 04-29-2017 at 08:20 PM.
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Old 04-30-2017, 11:42 AM
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While the rear cam tensioner can be seen on the right side of the bike, make sure you are looking and the left side of the bike, under the fuel tank and directly behind the radiator hose for the front cylinder cam tensioner. Both cylinders also have castings that look like a tensioner may go there but, in fact, it is just a casting. If this is the case, can you post a pic of it?
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Old 04-30-2017, 11:54 AM
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stejm629, here's two pics. These were taken on the left side of the bike (sidestand side), looking up at the bottom of the front cylinder.

Thanks for your reply.

Alan
Attached Thumbnails Cam Chain Tensioners-cct_pic1.jpg   Cam Chain Tensioners-cct_pic2.jpg  
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Old 04-30-2017, 12:20 PM
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Yeah that is a casting only. Your cam chain tensioner will be directly on the opposite side of that front cylinder (intake side) also it's kinda hard to see.
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Old 04-30-2017, 01:32 PM
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Cam chain tensioners always sit on the back side of the cylinders on engines that rotate in the same direction as the wheel, as the front side is the straight/tight chain run from the crank to the first sprocket to keep the timing correct.

The VTR cylinder casting is the same front and back, but they are finished off differently to account for the rotated orientation (so the intakes are in the V, the exhausts are outside). That means they start with blank castings for a tensioner mount on both sides of the cylinder, but only one side is finished to allow the tensioner to be installed.

Apparently you can make a rear cylinder/head work as a front cylinder/head, provided you can open out the unused tensioner mount on the back cylinder and blank off the existing one.

You can see the manual tensioner for the front head in this photo looking down into the V, with the tank/carbs/coolant hoses removed:

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Old 04-30-2017, 01:46 PM
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Doh! LOL. Yep, found it. Not where I expected it to be. Thanks both of you for your help.

Alan
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Old 04-30-2017, 05:14 PM
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So are they in fact manuals?
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Old 04-30-2017, 05:26 PM
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Wolverine, they are 'manual' CCTs. They're red anodized.

Alan
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Old 04-30-2017, 05:33 PM
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That's good to hear. One major issue sorted, only big one left is the r/r?
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Old 04-30-2017, 06:18 PM
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The two upgrade specifics I asked the prior owner about were the tensioners and R/R. He said both had been addressed.

Thanks, Alan
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Old 04-30-2017, 06:28 PM
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Even better!
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Old 05-01-2017, 10:25 AM
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I ordered my manual CCT's yesterday. I ordered a brand called Black Path.. anyone have an opinion on them? I figure as long as there's a bolt and lock nut they should work fine.
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Old 05-01-2017, 02:42 PM
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I'm sure no expert. But they're mechanically pretty basic things. I think the ones you ordered should work fine as any others.

Alan
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