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I broke number 3 cam bearing holder!! 18 Mar 2017 13:30 #757002

  • dberg
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Hey everybody,
Hope somebody can help me, I broke number 3 cam bearing holder. How does a guy go about getting a replacement.
Any help would be great!!
Thanks
Dan

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Last edit: by KZQ.

I have a problem!! 18 Mar 2017 13:38 #757005

  • Scirocco
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Sorry no replacement!!!!!
The cam bearing holders are machined together (mounted ) with the cylinder head.

Take some pics for a better repair solution
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I have a problem!! 18 Mar 2017 13:45 #757006

  • dberg
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Here it is
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I have a problem!! 18 Mar 2017 13:49 #757008

  • Nessism
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I'm not super familiar with the big KZ engines but on many similar engines you can exchange caps without issue. The caps are line-bored with the head but the manufacturing was quite accurate such that interchanging caps rarely causes issues.

Regarding that crack, is it possible to simply align the crack and bolt the cap back on the engine? The bolts will hold the cap in place regardless of the crack.
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I have a problem!! 18 Mar 2017 14:01 #757011

  • dberg
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Ok, I will just bolt it back on and see what happens.
Thanks guys

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I have a problem!! 18 Mar 2017 14:08 #757012

  • Scirocco
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Some of the advanced members here in the forum use screw clamps to tension the cam shafts down to prevent such a damage to the cam caps.
Sorry didnĀ“t found the picture yet.
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I have a problem!! 18 Mar 2017 14:09 #757013

  • 650ed
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Just curious - how did you break it? Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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I have a problem!! 18 Mar 2017 14:11 #757014

  • Scirocco
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He broke it at the lateral guides of the cam shaft. I suspect that the Cam shaft was not lateral centered

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Last edit: by Scirocco.

I have a problem!! 18 Mar 2017 15:07 #757022

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The way I broke it, I was getting in a hurry and did not see the bearing had slipped to the side so when I started to tighten it snapped.

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I have a problem!! 18 Mar 2017 15:11 #757023

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It is back together, hope it don't cause any problems.
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I have a problem!! 18 Mar 2017 15:44 #757026

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if the threats of the cam caps are in good condition your are on the safe site (do not over tighten them).
later ( i hope not so far ) if you must do a maintenance to your engine, you can welded the cap when the cylinder head is removed.
Good luck and enjoy your ride.
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I have a problem!! 18 Mar 2017 16:33 #757030

  • peter1958
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You can just run it like that.

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