1 or 2 head gaskets?

  • School Teacher
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05 Sep 2008 12:24 #235659 by School Teacher
1 or 2 head gaskets? was created by School Teacher
got a 1980 kz1000g that had a 2 piece gasket but looking at suppliers they have a 1 piece listed whats up?
1976 kz900 in parts but will be going some day soon
1980 kz1000G1
1976 kz900 parts bike
1979 kz1000 shaftie parts bike
1978 kz1000 33mm smoothies 1075 kit
Troutdale Oregon USA

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05 Sep 2008 12:32 #235660 by MFolks
Replied by MFolks on topic 1 or 2 head gaskets?
Maybe it's a sandwich of copper and fiber listed as a two piece gasket. Contact www.z1enterprises.com they will tell you all about gaskets for your bike.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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05 Sep 2008 13:10 #235665 by bountyhunter
Replied by bountyhunter on topic 1 or 2 head gaskets?
I have never seen a two piece head gasket. The good ones have two layers of copper on the outside with a softer material inside, but the layers are all hooked together. If the copper layers broke apart it would look like a two piece gasket.
1979 KZ-750 Twin

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05 Sep 2008 13:57 #235673 by Tony
Replied by Tony on topic 1 or 2 head gaskets?
If you check the first picture in THIS thread you can see the two piece head gasket and associated o ring. The problem, if it is a problem with the one piece gasket is you have to fill the grove that the o ring goes in with something. I don't think you can get a two piece gasket for oversized cylinders. Or so I 've heard.
1979 KZ1000 MKII

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05 Sep 2008 14:09 #235675 by edd
Replied by edd on topic 1 or 2 head gaskets?
The o.e.m. head gaskets for all the 4 cyl. kz's I've seen are 2 piece. Aftermarket head gaskets,specifically those used with oversize pistons, are 1 piece.When a 1 piece gasket is used the o-ring groove is filled with silicone.

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05 Sep 2008 22:53 #235749 by bountyhunter
Replied by bountyhunter on topic 1 or 2 head gaskets?
Interesting... two piece head gaskets. I must be really cynical because the first thing I thought of was:

"Wow.... how much would the dealer charge for THOSE?"

:laugh:
1979 KZ-750 Twin

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05 Sep 2008 23:24 #235755 by APE Jay
Replied by APE Jay on topic 1 or 2 head gaskets?
The two piece is oem and should be available.

Jay
www.KZzone.com

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06 Sep 2008 05:18 - 06 Sep 2008 05:24 #235764 by Patton
Replied by Patton on topic 1 or 2 head gaskets?
Z1E has the oem style two piece head gasket
two piece oem

and a copper version
two piece copper

and center cyl o-ring needed with two piece head gasket
"o"-ring

Z1E also carries single piece copper head gaskets.
copper single piece head gasket

Good Luck! :)
1973 Z1
KZ900 LTD
Last edit: 06 Sep 2008 05:24 by Patton.

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06 Sep 2008 08:19 #235784 by wiredgeorge
Replied by wiredgeorge on topic 1 or 2 head gaskets?
The earliest Z1s came with a one piece head gasket but Kaw changed to a two-piece and cam chain well oring probably in late 73 or 74 (can't recall for sure) to provide a better seal.
wiredgeorge Motorcycle Carburetors
Mico TX
www.wgcarbs.com
Too many bikes to list!

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06 Sep 2008 13:56 #235827 by bountyhunter
Replied by bountyhunter on topic 1 or 2 head gaskets?
Now I understand! The talk about a 2 piece head gasket had me thinking it was one piece on top of another piece....:laugh:

This kind makes more sense.
1979 KZ-750 Twin

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06 Sep 2008 14:19 #235831 by Rail
Replied by Rail on topic 1 or 2 head gaskets?
The Clymer manual says: To install the cylinder head on a 1974 or later engine, lay 2 new cylinder head gaskets (left and right are the same)on the cylinder block, with the wider crimped edges facing up. Place the O-Ring in the groove between the 2 gaskets.

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