Has anyone had problems with new camshaft bearings?

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16 Apr 2023 11:57 #883247 by MLMG
Replied by MLMG on topic Has anyone had problems with new camshaft bearings?
If Steve is paper tape, I already corrected.

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1977 Kawasaki KZ1000 A1

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16 Apr 2023 12:04 #883249 by MLMG
Replied by MLMG on topic Has anyone had problems with new camshaft bearings?
Thank you Zed1015, I will do as you say. I still have to bleed the brakes. 
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16 Apr 2023 17:14 #883280 by MLMG
Replied by MLMG on topic Has anyone had problems with new camshaft bearings?
I have a doubt, if all camshaft bearings are of standard size and all camshafts are of standard size, does it make sense to control the clearance by ensuring that they are not tightened too much?
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16 Apr 2023 18:22 #883285 by SWest
Replied by SWest on topic Has anyone had problems with new camshaft bearings?
There is a wide range of acceptable tolerances not like crankshaft bearings. .001-.006" is what the book says. 
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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17 Apr 2023 01:01 - 17 Apr 2023 01:23 #883302 by zed1015
Replied by zed1015 on topic Has anyone had problems with new camshaft bearings?

I have a doubt, if all camshaft bearings are of standard size and all camshafts are of standard size, does it make sense to control the clearance by ensuring that they are not tightened too much?
All the shells are just one std size to match the std size of the cam journals.
No undersizes for journal regrinds as you would have on a crank.
Cap bolt torque won't affect the clearances unless the bolts were loose which you don't want.
The tolerances in the manual are service limits to determine the condition and wear condition of the installed shells and cam journals.
 
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Last edit: 17 Apr 2023 01:23 by zed1015.
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29 Apr 2023 10:33 #883955 by MLMG
Replied by MLMG on topic Has anyone had problems with new camshaft bearings?
Hello everyone, guys. I would like to know your opinion about the sound of my engine. It sounds like a metallic scraping sound. Is this normal? I have to mention that the idle wheel of the camshaft chain is a cheap version, could that be causing the noise?


 

I leave the link with the sound of the engine.

Sound.


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29 Apr 2023 12:35 #883958 by willemZ900
Replied by willemZ900 on topic Has anyone had problems with new camshaft bearings?
Is your cam chain tensioner OK, because the sound seems to disapear when your machine revs up!
How old is your top idler sprocket?
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29 Apr 2023 13:58 #883962 by MLMG
Replied by MLMG on topic Has anyone had problems with new camshaft bearings?
Hello, the idler sprocket and timing chain only have 35 km. Could it be that it is ready to adjust the chain tensioner? I'm going to look tomorrow.
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29 Apr 2023 15:18 - 29 Apr 2023 15:54 #883965 by Scirocco
Replied by Scirocco on topic Has anyone had problems with new camshaft bearings?
The spring in the stock cam chain tensioner is to weak to set the chain slack right.
I do modify to a manual cam chain tensioner, works perfect for me.
You can adjust the tension on a runnig engine with the force of your finger tips only.

www.kzrider.com/forum/2-engine/575505-ho...-cam-chain-tensioner

 
 

Edit: need no Helicoil, cam chain tensioner cast have enough "meet". Center punch, drill 5 mm, cut M6 and ready to go...
 
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Last edit: 29 Apr 2023 15:54 by Scirocco.
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29 Apr 2023 16:09 #883966 by MLMG
Replied by MLMG on topic Has anyone had problems with new camshaft bearings?
I could not resist and I went to see the tensioner, I loosened it and I felt that it settled. I'll see tomorrow if the noise has gone away. Hopefully it's just that.
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29 Apr 2023 16:18 #883968 by SWest
Replied by SWest on topic Has anyone had problems with new camshaft bearings?
You turn the engine over a couple revolutions with a wrench, loosen the bolt and you should hear a click as the plunger takes up the slack. Don't run it too loose.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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01 May 2023 12:55 #884080 by MLMG
Replied by MLMG on topic Has anyone had problems with new camshaft bearings?
Cylinder three stopped working, that's a valve clearance problem, right?
 
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