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mebgardner

Anyone using an MCCT on their WR450?

4 posts in this topic

I'm from the DRZ400 world, and one of their primary recommendations is to replace the Automatic Cam Chain Tensioner with a Manual CCT (MCCT).

 

They replace the automatics because of the cam chain stretching that model experiences.  Using the ACCT greatly reduces the life of the cam chain on that model, and replacing it with a manually set MCCT prolongs it's life to something approaching 30K miles.

 

Anyone using MCCTs on this cycle?

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No.

You need to replace the ACCT and chain with every piston.

And that's more like every 5k miles, so don't treat this motor like a DRZ motor....

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No.

You need to replace the ACCT and chain with every piston.

And that's more like every 5k miles, so don't treat this motor like a DRZ motor....

 

Oh, OK!

 

Top end jobs are more frequent, and include the chain and ACCT.

 

Good to know, thanks!

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I'm using one on my WR250f, haven't changed anything yet on my wr450f.  On the 250 I couldn't get the auto adjuster to lock out anymore and did a top end, chain and adjuster.  

I adjusted it to the tension the maker specified, I think that was about 1/4 inch between the cams.  It sounded too loose so I slowly tightened it with the engine running until it sounded right.  No problems since.  

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