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What about your Cam Chain Tensioner?

Poll: Have you replaced your cam chain tensioner?

Still running stock tensioner.
2 20%
Have replaced it with OEM unit.
No votes 0%
Have replaced it with automatic unit from another model motorcycle.
5 50%
Have replaced it with a manual tensioner.
3 30%
Total number of voters: 10 ( twowings, Freddy, Kawboy, tackelhappy, zed900 ) See more
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  • Kawboy
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Re: What about your Cam Chain Tensioner?

7 hours 53 minutes ago - 7 hours 51 minutes ago
#34320
I don't have an APE tensioner reasonably handy but I'm sure that the thread on the tensioning rod is either 6mm or 8mm. That being said-
6mm course thread has a thread pitch of 1mm (.040") and fine thread pitch is .75mm (.030") so the difference in advancement of 1 whole thread is .010"

8mm course thread pitch is 1.25mm (.050") and fine thread pitch is 1mm (.040") so again the difference in advancement of 1 whole thread is .010"

Not enough difference to get excited about. i.e. not worth the trouble.
Last edit: 7 hours 51 minutes ago by Kawboy.

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Re: What about your Cam Chain Tensioner?

3 hours 19 minutes ago
#34321
I've ordered a ZX11 cam chain tensioner from EBay so I can evaluate this alternative. I like the simplicity of an automatic tensioner and the positive locking mechanism is a better design than the stock KZ tensioner. It will be interesting to see what wear is on this tensioner as found.

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Re: What about your Cam Chain Tensioner?

16 minutes ago
#34322
I pulled the stock tensioner off of my Voyager. It's just a locking ball ring with an oil pressure backup. As I took it off the engine I noted that there was no oil in the tensioner, nor was there any oil in the supply tube which incorporates a check valve. At the very least the empty supply tube would mean that there may be a delay in the support that the oil could apply during cold starts.
I also have a ZX11 tensioner which I installed in place of the stock unit because I'm in the process of adjusting the valves. While doing so I was able to compare the relative strengths of the springs. The ZX110 tensioner spring is WAY more powerful than the stock tensioner spring. It's in there now just to control the slack in the cam chain while I'm working on the valves. I would not subject the system to the pressure that the ZX11 tensioner will apply if I left it in there long term.
Bill
1968 BSA Shooting Star, 1970 BSA 650 Lightning, 1974 Kawasaki W3, 1976 KZ900 A4, 1979 KZ750 B4, 1979 KZ750 B4 Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 1985 Kawasaki ZN1300, 2000 Honda Valkyrie Tourer, 2009 Yamaha RoadLiner S

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