SOHC.co.uk Forums > CB350/400

Do folk here Anneal Copper head washers?

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McCabe-Thiele (Ted):
Just wondering if it's worth me heating up my copper cylinder head washers to Anneal them or is this an extinct practice?

ka-ja:
Heat up until black, then dump in cold water-easy, I have a home made copper head gasket.

Laverda Dave:
I'm sure I've read on here before these washers are not actually cooper but are copper plated steel?

McCabe-Thiele (Ted):

--- Quote from: Laverda Dave on September 22, 2021, 10:29:23 PM ---I'm sure I've read on here before these washers are not actually cooper but are copper plated steel?

--- End quote ---

At £3.47 each I expect them to be Copper right through!

Mine are not even remotely magnetic - so definetely not steel plated  -  they are Copper - the staining on mine is Alluminium due to Galvanic corrosion effects from the cylinder head & nuts.
Alluminium & Iron sit above Copper in the periodic tabe so that fits with my theory unless someone can come up with another explaination.

amx1992:
My original 400 ones were definitely copper plated steel, but I've replace them with solid copper ones so maybe someone has done the same in the past with yours Ted

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