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Good sealant for leaky engines?


stuey
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My ASP 61 has been a bit leaky around the rocker cover joint, and probably through the bolt holes. I have some Hermetite Instant Gasket which I could use to seal the join and some around the heads of the bolts. It is a silicone sealant, is it suitable for such a use and if not what is good (preferably available in Halfords etc)
Thanks
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Why not re-surface the rocker cover on a sheet of wet & dry 600 grade maybe on a perfectly flat surface ? Don't overdo it otherwise the rockers might touch the cover ! I doubt that the actual top of the head has distorted where the rocker cover fits . I agree with Ken about the brown paper gasket if the above fails to stop leaks . In my day we used "Gasket Goo" but havn't seen it for years
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