Tensioner Question
 

I replaced the timing chain tensioner on my 2009 MCS with the new model. The original was not tight and was seeping oil. Should I expect the new one to back out over time and require periodic tightening?

Not if you installed it with Loctite on clean threads. Also, you need to replace gasket with a new one each time tensioner is removed and replaced.

DOC

...and hopefully your chain isn't stretched or your guides worn/broken. That'll add to the headache.

OK thanks, didn't use thread lock so I'll keep an eye on it. I hope that the chain and guides are OK, time will tell. I will be prepared to replace the entire assembly when needed but if I bought a few more years for $37 I will be happy.

The old tensioner didn't have thread lock on it and I did not see that recommendation in my research. Seems like a great idea.

Attachment 107156

No, with the threads clean and proper torque applied to the tensioner you should not have an issue. Spec on it is 45 ft lbs, we usually add a bit extra to ensure it doesn't back out over time.

Nick
Detroit Tuned

Great, thanks!

The newest tensioner has a little bump on the back of the hex head for the stock size 78mm ~895 part. And then just torque to that set amount. Should be fine.

I installed the x482 tensioner.