Which way up? Head gasket

Information relating to the Matchless G9 or AJS Model 20 500cc twin
Locked
ebolastu
Posts: 7
Joined: Tue Jan 02, 2018 12:12 pm
Location: POWYS UK

Which way up? Head gasket

Post by ebolastu »

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

Ajs m20 1956 composite head gasket
You do not have the required permissions to view the files attached to this post.
cbranni
Member
Posts: 1439
Joined: Sat Oct 09, 2010 9:17 pm
Location: ABERTAWE UK

Re: Which way up? Head gasket

Post by cbranni »

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

Colin
only dead fish go with the flow
User avatar
Martin.S
Posts: 443
Joined: Sun Mar 18, 2018 12:02 pm
Location: Bristol UK

Re: Which way up? Head gasket

Post by Martin.S »

Surely it will only fit one way round?
MalcW
Member
Posts: 626
Joined: Tue Oct 24, 2017 12:05 pm
Location: DEVON UK

Re: Which way up? Head gasket

Post by MalcW »

No, they'll fit either way up.
User avatar
Martin.S
Posts: 443
Joined: Sun Mar 18, 2018 12:02 pm
Location: Bristol UK

Re: Which way up? Head gasket

Post by Martin.S »

Oops - I did a "Harknett" - wrong model - sorry!
User avatar
dave16mct
Member
Posts: 3234
Joined: Mon Jan 01, 1990 12:00 am
Location: LANCASHIRE UK

Re: Which way up? Head gasket

Post by dave16mct »

Is that a new expression? 'Doing a Harknet.' Where's my Roget's Thesaurus? :D
Dave.
raffles
Member
Posts: 609
Joined: Mon Jan 01, 1990 12:00 am
Location: NORTHAMPTONSHIRE UK

Re: Which way up? Head gasket

Post by raffles »

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
ebolastu
Posts: 7
Joined: Tue Jan 02, 2018 12:12 pm
Location: POWYS UK

Re: Which way up? Head gasket

Post by ebolastu »

I had some great advice as to the fitting of the gasket from a helpful club member at Stafford.

Soak the the composite gasket over night then remove it from the water. Then throw it away and find a copper gasket set.

Seems to have worked as I went and found a copper gasket
JimFitz
Posts: 663
Joined: Thu Feb 27, 2014 9:27 am
Location: Kent, England

Re: Which way up? Head gasket

Post by JimFitz »

ebolastu wrote:I had some great advice as to the fitting of the gasket from a helpful club member at Stafford.

Soak the the composite gasket over night then remove it from the water. Then throw it away and find a copper gasket set.

Seems to have worked as I went and found a copper gasket
:rofl:

Just make sure the copper thickness is right. I had one from club spares which was the wrong thickness and I did not realise. I had to grind a bit off the top of one of the valves to get clearance.

Jim
Too old to Rock and Roll but too young to die.

1952 G80 rigid, 1960 G12 DL / Watsonian Monza, 1954 G80S.
Locked