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

Can I re-use a head gasket if..... 27 Jun 2019 10:16 #806566

  • Gdailey2112
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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 KZ1100 Gpz

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Can I re-use a head gasket if..... 27 Jun 2019 12:11 #806570

  • Nerdy
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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
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R

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Can I re-use a head gasket if..... 27 Jun 2019 13:38 #806578

  • azman857
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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 KZ750 custom project in progress

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Can I re-use a head gasket if..... 27 Jun 2019 13:55 #806579

  • SWest
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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
Z1b1000 1975 Z1b
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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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Can I re-use a head gasket if..... 27 Jun 2019 14:16 #806581

  • Gdailey2112
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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 KZ1100 Gpz

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Can I re-use a head gasket if..... 27 Jun 2019 15:27 #806586

  • SWest
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Just make it tacky.
Steve
Z1b1000 1975 Z1b
Opinions expressed by me do not reflect those of the the staff or members
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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Can I re-use a head gasket if..... 01 Jul 2019 11:23 #806771

  • Gdailey2112
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I do have 4 new O rings BUT will this be a problem? Thanks! My guess is yes.
1982 KZ1100 Gpz
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Can I re-use a head gasket if..... 01 Jul 2019 13:30 #806781

  • Scirocco
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The o-rings will seal it but a little patch of liquid gasket on that spot do the Job.

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Can I re-use a head gasket if..... 01 Jul 2019 14:23 #806789

  • Gdailey2112
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10-4 I'm gonna give 'er a whirl
1982 KZ1100 Gpz

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Can I re-use a head gasket if..... 10 Jul 2019 20:34 #807338

  • Nerdy
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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
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R

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Can I re-use a head gasket if..... 11 Jul 2019 14:53 #807387

  • Gdailey2112
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Worked like a charm!! Thanks all!!!
1982 KZ1100 Gpz

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