Cam chain tensioner question

wildrider · Jul 1, 2012

Story starts here:
http://www.ktmforums.com/forums/ktm-rc8/4275-oil-indicator-help-please.html

I noted the timing chain tensioners are a way different from japanese spring loaded timing chain tensioners.
KTM tensioner is hydraulic one and how it works? how it gets on moment of star the engine when it is not enough oils pressure???
Thing is when I tried to start the engine f..cking tensioner just did not press the chain and the chain just jumped over the cam shaft !!!

Question: could be the timing chain destroyed in some way when the camshafts on 2nd cylinder got stucked and it is not functioning well anymore?

I tried to put inside the tensioner the small metal piece - tensioner did the job. taking out - timing chain jumped over again.

I'm starting to think about the new engine...

wildrider · Jul 1, 2012

Found some info on "magic f.ck OEM" oil timing chain tensioners:

http://www.dirttricks.com/timing_chain_tensioner.htm

Seeems I need a new tensioners, improeved ones maybe?
Any usefull links would be appreciated.

bajadog · Jul 1, 2012

Never knew about an oil pressure actuated chain tensioner.

My LC4 and RFS have the spring loaded kind.

Your engine is the LC8?

wildrider · Jul 1, 2012

Yes, it is LC8.

wildrider · Jul 2, 2012

Here is what I found out overnight

Take a look here:
http://www.dirttricks.com/timing_chain_tensioner.htm
It says it replaces 77036003000 so, on RC8 is exactly same tensioner.
Seems KTM used same hydraulic tensioner on all their bikes.

smokedu · Jul 3, 2012

Thanks for sharing this information wildrider. Let us know if this fixes what is going on with yours.

Derick

wildrider · Aug 31, 2012

Update:
Have done ca 2kmiles with these tensioners and no problems yet. Seems Dirt Tricks thingies are doing job on rc8

nickn · Aug 31, 2012

Have you found the motor quieter? Did it get rid of the rattly chain noise?

wildrider · Aug 31, 2012

Actually I was looking for a better quality tensioners than ****ty OEM ones, and yes, it is quieter. No chain noise anymore.

nickn · Aug 31, 2012

Thanks for the feedback mate. I will be ordering some.

Cam chain tensioner question

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