Topic: M3 cam chain guide and cam chain instalation

[Silverback]

I figured I would post here because the M3 tensioner/guide is a high performance upgrade. I am having the hardest time installing a cam chain ever. I have done this numerous times with not one problem whatsoever. I cannot for the life of me get enough slack in the cam chain to install it on the sprocket. It looks as though the M3 guide is taking the slack out of the chain. The tensioner is not installed, so the guide is all the way up against the galley wall. Do I need a longer chain with this tensioner? Is there a trick with this thing that I am not aware of?

The M3 unit is installed the only way it can be installed and looks just like the picture provided on their website with regards to chain routing. A tear down at this point would really suck since I have already had the motor apart twice fixing an "engine builders" mistakes.

[Silverback]

Ok! I was able to get the thing on, but whew is it tight! So, is that how this device prevents cam chain failure; it does not allow for for a fatal amount of slack to happen?

When I install the tensioner with plunger all the way in, it makes contact with the guide, and giving more tension before I even release the plunger.

Mark!!!!?? Is this how this thing should be? I didn't get any instructions with the unit and just want to make sure before I button it up.

[Silverback]

Just to clarify for others that have/want this tensioner. Cycle X now sells this tensioner and Ken is a very helpful person when you have questions.

I have spoken with another member that installed the slipper. It is a tight install and the plunger itself does not move much when released. They noted this during install, and their bike is running just fine. Hope this helps those that might encounter harder installation procedures when using these slipper tensioners.

[kos]

I send all my tensioners out with instruction, so if you were missing those, I am sorry.  No need for special length chain.

Mark@ M3

[tweakin]

Mark, not to be a pain but did you recieve my messages regarding the tensioner I ordered from you?  Did it ship?

Thank you, I am looking forward to using it on my 915 build.

I send all my tensioners out with instruction, so if you were missing those, I am sorry.  No need for special length chain.

Mark@ M3

[rugger81]

I send all my tensioners out with instruction, so if you were missing those, I am sorry.  No need for special length chain.

Mark@ M3

I bought my cam chain tensioner a couple years back and didn't get directions. I'm finally getting around to installing it here soon though. Mind if you could post them up?

[kos]

M3 Racing cam tensioner picture.

KOS

Mark@m3racing.com

[kos]

M3 Racing instructions for slipper tensioner.

I have special pricing for tensioners and chains for SOHC forum members.

Mark@m3racing.com

[lordmoonpie]

I have to say I installed a variation of Mark's tensioner - physically 95% identical and 100% identical dimensions and while it was tighter than the originals it works superbly well. It's pretty darn simple to install too guys, you don't really need instructions if you'e changed tensioners before although I accept it probably gives confidence if you can refer to a "how to" page. Good luck with the installs you won't regret it!

[odin836]

Hello, I am about to install Marks Tensioner and have a couple of quick questions before I proceed.

The instructions I received mentioned saving the pin and hold down rubbers; parts 9 and 11.
Am I correct in assuming this removes the need for parts 3, 8 and 10.


Other than parts 3, 8, 10 I also assume all other parts are still required?

Finally, when I ordered my tensioner, I received this, which is listed as for the CB350 on the M3 website.
Is the CB750 unit the same, or has there been a mistake?

However, this is visually the same as what I received.




Note: This is what is shown on the M3 site as suitable for the CB750, hence my concern.



 

[lordmoonpie]

Hey Odin, you're right you no longer need parts 3, 8, 10 - they relate to the original tensioner setup that you will not require afterwards. Does look like you have the wrong one for a 750 however, the bottom picture and profile of tensioner is the correct one for a 750 engine.

[odin836]

Thanks for confirming my suspicions Lordmoonpie.
I have emailed Mark with my concerns.