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timing chain/cam chain replacement.

Old Apr 3, 2022 | 02:25 PM
  #51  
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Originally Posted by IDoDirt
It's really hard to say. For the zero clearance, I can only imagine something is in there like dirt. It's a small clearance and it doesn't take much. BTW its easier to read this way.

Now you bring this pic back, it´s the cylinder #4, exhaust valve right with an original 17,8 gap, has now 0 gap.

Me too, I´m thinking I might have left oil, or something inside the valve bucket that makes this gap smaller.

No other choice but to dissassemble again, and look back at them again.

 
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Old Apr 3, 2022 | 02:34 PM
  #52  
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Originally Posted by carlitox33
Now you bring this pic back, it´s the cylinder #4, exhaust valve right with an original 17,8 gap, has now 0 gap.

Me too, I´m thinking I might have left oil, or something inside the valve bucket that makes this gap smaller.

No other choice but to dissassemble again, and look back at them again.
By the by, I really liked the excel idea. I´ve just built a very simple excel file to calculate it.
 
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Old Apr 10, 2022 | 01:31 PM
  #53  
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I dissassembled. My zero gap value is solved, as 2 thin shims were stuck together, and I didnt notice. Solved now.

Going to order new shims now.
 
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Old Apr 10, 2022 | 02:35 PM
  #54  
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Cool, it's the little things that get ya. Like they say, the devil is in the details. Good catch. Now those are the types of things that we here online can't help with. We're not there seeing what you see.
 
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Old Apr 10, 2022 | 03:00 PM
  #55  
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Originally Posted by carlitox33
I dissassembled. My zero gap value is solved, as 2 thin shims were stuck together, and I didnt notice. Solved now.

Going to order new shims now.
That's the kind of stuff that seems to happen with me frequently. Usually ends up doubling or tripling my job time. I've learned to pencil things onto my calendar that way!
 
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Old Apr 11, 2022 | 03:54 AM
  #56  
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Originally Posted by Doc Samson
That's the kind of stuff that seems to happen with me frequently. Usually ends up doubling or tripling my job time. I've learned to pencil things onto my calendar that way!
I´ve done it so many times (getting the cams on and off) that I can do it with closed eyes already.

It will all be OK in the end. I´m sure.
 
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Old Jul 21, 2022 | 10:01 AM
  #57  
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New update. I know it´s been a long time, but somehow work keeps getting in the way...

I uploaded the shim calculation excel tool, and I was still getting ridiculous readings... I needed smaller and smaller shims every time (but not 1,85, more like 1,05 or so). It didn´t make sense.

Only a few days ago I realized that I was inputting shim value as 0,185mm, rather than 1,85mm. That was the problem.

I took the cams off again (yes, yet again) and have just received the new shims. Things should be straightforward from here. I will upload the shim tool again; and repost on the results.

Regards,

C.
 
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Old Jul 21, 2022 | 02:30 PM
  #58  
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Glad you finally got it sorted out!
 
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Old Jul 22, 2022 | 05:22 AM
  #59  
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Fingers crossed for you.
 
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Old Dec 17, 2024 | 06:46 AM
  #60  
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Unhappy cam chain

Originally Posted by Jacob Fiddler
40,000 miles can stretch a chain to the point if replacing, especially if they are HARD miles. not so much the mileage but the hours and load of stress an experienced rider can put an extreme amount of stress on a chain when running wheelies and racing motor hard as it can. 😁. here's some pics to show you what to look for before you or anyone else decides to replace cam chain. and dont listen to anyone but your own educated opinion. because if it gets too lose can cause allot of damage,. and it'll be you not them spending the hours And hundreds to fix 😉🔧

left is new rights is old. notice how the old chain is longer. and the marks all over outside where it has benn slapping the chain guides.
The picture is of two distinctly different chains, it shows NOTHING that is valid

And please do tell me how, doing wheelies will give the cam chain a hard life ??
the cam chain gets the hardest life at low engine speeds not high

IF you have no valid engineering expertise to impart, please do not try and convince the less knowledgeable that this conjecture is fact
 
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