Which way up? Head gasket

Information relating to the Matchless G9 or AJS Model 20 500cc twin
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Which way up? Head gasket

Postby ebolastu » Sat Apr 27, 2019 6:24 pm

Is this the right way up to fit. Or should the other (more) copper side be up?

Ajs m20 1956 composite head gasket
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Re: Which way up? Head gasket

Postby cbranni » Sun Apr 28, 2019 8:14 am

That is the correct way, but if I'm wrong we will soon find out. :D

Colin
only dead fish go with the flow

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Re: Which way up? Head gasket

Postby Martin.S » Mon Apr 29, 2019 10:01 am

Surely it will only fit one way round?

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Re: Which way up? Head gasket

Postby MalcW » Mon Apr 29, 2019 10:28 am

No, they'll fit either way up.

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Re: Which way up? Head gasket

Postby Martin.S » Mon Apr 29, 2019 10:59 am

Oops - I did a "Harknett" - wrong model - sorry!

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Re: Which way up? Head gasket

Postby dave16mct » Mon Apr 29, 2019 11:04 am

Is that a new expression? 'Doing a Harknet.' Where's my Roget's Thesaurus? :D
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Re: Which way up? Head gasket

Postby raffles » Mon Apr 29, 2019 5:53 pm

Whatever way up you fit it make sure the two gaskets do not overlap between the barrels. This is the cause
of most head gaskets blowing, offer them up then if need be trim with a craft knife
Tony

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