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Posted by: MrKona Dec 6 2008, 11:49 PM

In the spirit of originality, I have a question about the M8 nuts that fasten the heat exchangers to the 1.8 muffler (1974). What was the original finish of these nuts? Were they zinc coated steel? There is a picture in the AA catalog showing these nuts as copper clad steel, just like the exhaust stud nuts. This has me wondering.

Posted by: Pat Garvey Jan 17 2009, 07:29 PM

I've been waiting for someone more 1.8 knowledgeable than I to respond to this, but no one has, so I'll impart my "thoughts".

I "believe" that these nuts were zinc coated, not copper. However, I also think that copper cladded nuits would be an improvement over zinc. Better yet would be stailess, with stainless washers (That;s what I've used for years on my 1.7). These are available locally, for a lot less than copper clad.

Pat