Can I re-use a head gasket if.....

  • Gdailey2112
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Can I re-use a head gasket if.....

27 Jun 2019 10:16
#806566
Wondered if I can re-use a head gasket if I'd installed as new OEM (with head torqued to spec BUT motor never ran with it yet)? Had to remove head and again re-install due to replacing a bent valve. Normally if questionable, I'd replace it BUT money is tight. Thoughts anyone? Thanks!
1982 KZ1100D1

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  • Nerdy
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Re: Can I re-use a head gasket if.....

27 Jun 2019 12:11
#806570
Under those specific circumstances, reusing what is basically a new gasket would not bother me. Some people will no doubt feel differently.


However, I'm curious as to how you ended up with a bent valve after the head was installed. Was the cam chain off by a couple teeth when you tried to start the engine?
1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R

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  • azman857
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Re: Can I re-use a head gasket if.....

27 Jun 2019 13:38
#806578
I would. Was the valve bent before and discovered later? What's the story?
I don't have a plan and I'm sticken' to it! '77 KZ 650 / 750 GPz custom project in progress

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Re: Can I re-use a head gasket if.....

27 Jun 2019 13:55
#806579
I would. I'm using a head gasket I replaced a year before. I used copper spray and have had to retorque it a few times. I'd rather have new but it was a choice of riding or not. I'll be replacing it this time around.
Steve

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Re: Can I re-use a head gasket if.....

27 Jun 2019 14:16
#806581
Not sure what'd happened, installed head and cams per FSM, insured timing was spot on, insured valve shims were correct. When checking compression had noticed cyl #4 with NO compression. Insured valve wasn't hanging open due to possible shim problem. Pulled head and valves....used cordless drill to check for bent valves. Found one. Looked at piston, no evidence.

Any specific copper spray recommended? Much thanks!!
1982 KZ1100D1

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Re: Can I re-use a head gasket if.....

27 Jun 2019 15:27
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Just make it tacky.
Steve

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  • Gdailey2112
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Re: Can I re-use a head gasket if.....

01 Jul 2019 11:23 - 01 Jul 2019 11:24
#806771
I do have 4 new O rings BUT will this be a problem? Thanks! My guess is yes.
1982 KZ1100D1
Last edit: 01 Jul 2019 11:24 by Gdailey2112.

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  • Scirocco
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Re: Can I re-use a head gasket if.....

01 Jul 2019 13:30
#806781
The o-rings will seal it but a little patch of liquid gasket on that spot do the Job.

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Re: Can I re-use a head gasket if.....

01 Jul 2019 14:23
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10-4 I'm gonna give 'er a whirl
1982 KZ1100D1

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Re: Can I re-use a head gasket if.....

10 Jul 2019 20:34
#807338
Gdailey2112 wrote: 10-4 I'm gonna give 'er a whirl


How did it go?
1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R

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Re: Can I re-use a head gasket if.....

11 Jul 2019 14:53
#807387
Worked like a charm!! Thanks all!!!
1982 KZ1100D1

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