Very low compression after head gusket replacment

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Re: Very low compression after head gusket replacment

22 May 2016 16:51
#727940
swest wrote: Where did the metal shavings come from? That's what's causing it. Pull the head.

Attachment valvebucketseat.jpg not found


So I took it apart. On the pickture you could see the line where it was eating aluminum. I took valve from #4 intake and put it into #3 just to see may be bent valve. Same thing bucket goes in with force. I am really puzzled why this is happening.
1982 Kawasaki KZ1000 Police

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Re: Very low compression after head gusket replacment

22 May 2016 17:32
#727946
You can take some 230 paper and clean up the metal fragments. Better with a brake hone. Just enough to make it go in freely.
Steve

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Re: Very low compression after head gusket replacment

22 May 2016 18:14
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swest wrote: You can take some 230 paper and clean up the metal fragments. Better with a brake hone. Just enough to make it go in freely.
Steve
Thanks man will do that. Any idea why it was fine before and now its tight like that?
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Re: Very low compression after head gusket replacment

22 May 2016 18:19
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Metal fragments got imbedded in the sides. Where did they come from?
Steve

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Re: Very low compression after head gusket replacment

22 May 2016 18:21
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swest wrote: Metal fragments got imbedded in the sides. Where did they come from?
Steve
No clue
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Re: Very low compression after head gusket replacment

22 May 2016 18:25
#727959
They had to come from somewhere. Cam bearings?
Steve

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Re: Very low compression after head gusket replacment

22 May 2016 19:45
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Those look ok. I see tiny metal markings on both spring seats on 3 and 4 but they are close. though . It was a lot of metal coming from bucket number 3 it self. I'll check cylinder # 1 to. To clean it though i need to take valve guide. Its hard to get in there
swest wrote: They had to come from somewhere. Cam bearings?
Steve
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Re: Very low compression after head gusket replacment

22 May 2016 20:13
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Now that you have it off you should take all the valves out and inspect the damage.
Steve

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Re: Very low compression after head gusket replacment

23 May 2016 00:04
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swest wrote: Now that you have it off you should take all the valves out and inspect the damage.
Steve
Everything is out. Metal shavings everywhere. Looks like that bucket sprayed a lot of metal around. I was taking guide on #3 out and broke it. Oh well will get new one they are cheap.
This bike is full of surprises. On intake #1 valves head is to big I had to drive it out would not come out by hand. New puzzle:)
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Re: Very low compression after head gusket replacment

23 May 2016 05:09
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How did you take the guide out?
steve

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Re: Very low compression after head gusket replacment

23 May 2016 06:24
#727994
Heated up and drove it out. Using steal driver and hammer
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Re: Very low compression after head gusket replacment

23 May 2016 06:33
#727996
If you're not careful, you will take some metal out with it. Sounds like you need professional help or another head.
Steve

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