Author Topic: What was the deal with using different orings on early ko head gaskets?  (Read 122 times)

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Offline slyguy

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I remember a thread on it yrs ago but  seem to find it?

Offline HondaMan

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Re: What was the deal with using different orings on early ko head gaskets?
« Reply #1 on: November 06, 2024, 06:59:58 PM »
I remember a thread on it yrs ago but  seem to find it?
It's not just on the K0, but all of the 750s (and other SOHC4 engines).
The head gaskets today are thicker than the old ones because of the switch to not using asbestos during the 1990s era. Today they are 1.0mm thick where they used to be 0.8mm thick.

If you're rebuilding one of these, PM me for some of the extra-thick O-rings: they go into the 2 oil passages at the back of the cylinders, in the big holes in the head gasket there.
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

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Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
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Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

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Offline slyguy

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Re: What was the deal with using different orings on early ko head gaskets?
« Reply #2 on: November 07, 2024, 07:31:37 PM »
Ok yes, thanks mark! pm sent:)