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Timing chain noise 

 

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 Post subject: Timing chain noise
Posted: Tue Apr 10, 2007 9:19 pm 
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Hey guys, i have recently installed a DEV5 head from JMM and i now have a timing chain noise, as we ran out of time, i sent it to a workshop to get it fixed, they replaced the , 3 gears, all the guides, the chain and the tensioner, yet i still have the same noise??

any ideas??

much apprieciated

 

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Posted: Tue Apr 10, 2007 10:39 pm 
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i think i got the same problem. I installed the R1 and had to undo the tensioner but its got a little bit of noise at the moment so i think it needs wearing in again..

 

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Posted: Tue Apr 10, 2007 10:56 pm 
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JMM has previously said the dev 5 cam profile is prone to causing timing chain noise.

 

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Posted: Wed Apr 11, 2007 3:45 am 
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and ebs_4l has previously said to fit a stiffer tensioner spring, this has worked on others with (not so much big, but rough) cam profiles...

where to get one, take yours out, take it to a spring maker, and have one made with a lot more tension.... i found a spring laying around that worked.

ive had custom springs made by a spring shop before, only cost me $50 for 10 custom made stainless springs made to my dimensions

 

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Posted: Wed Apr 11, 2007 7:20 pm 
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it also could be the tensioner is not set propally

 

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Posted: Fri Apr 13, 2007 7:39 pm 
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Yea we have had the tensioner loose(ish) and tight. but no differance

JMM never said to me that i would have chain noise.

 

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Posted: Fri Apr 13, 2007 8:27 pm 
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is it timing chain rattle or timing chain rubbing if it rattle the tensioner is loose if it rubbing its to tight .how bouts did you or the workshop reset the timing tensioner there is a certain way of doing it so as that it dosent make noises

 

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Posted: Fri Apr 13, 2007 11:10 pm 
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My Dev 4 does the same also

 

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