Leaking Primary Case on Norton ES2 500

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Gerry
Posts: 39
Joined: Sat Feb 21, 2009 10:02 pm
Location: Huddersfield

Leaking Primary Case on Norton ES2 500

Unread post by Gerry » Tue Jul 21, 2015 1:48 pm

Hi everyone,
Can anybody help please and tell me how to stop the primary case from leaking oil on a 1950 Norton ES2 500. I have tried all types of sealants to no avail.
Any suggestions would be appreciated

Coxy
Posts: 202
Joined: Sun Mar 29, 2009 11:05 am
Location: Sydney Australia

Re: Leaking Primary Case on Norton ES2 500

Unread post by Coxy » Wed Jul 22, 2015 11:55 am

Use the Threebond manufactured Black silicon Toyota use to seal the sumps on Modern Engines it is fairly thick and quite sticky and is the only seal used on the sumps, Not cheap but it does actually work and would do the job fine as it also allows for differential expansion rates in normal use so will handle the hot cold cycles Ok.

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