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Howard Lewis

30/09/2019 18:24:05

7227 forum posts
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Yes, core plug was one of the uses to which they were put. At Rolls Royce, and on the early Perkins, engines screw in brass plugs were used. R-R sealed them with foul smelling Wellseal, as well as aluminium washers, which could only be removed from the skin with Trichlorethylene. (Try getting that today! ) Later they moved to Hylomar, which needed Methylene Chloride to shift it!

Later Perkins engines eventually used stainless steel cup plugs, which were sealed with a Loctite sealant.

The core plug that rusted through and leaked, was always the one at the back of the block, needing the engine out, or a hole cut in the firewall, to replace it.

Newton's Fourth law, the eternal cussedness of things; sometimes attributed to Sod!

Howard

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