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Well, I was told that Triumph/BSA had always used high density cast iron valve seats in their aluminium heads which was standard practise so to use throughout the motorcycle industry..Mind you I'm only repeating what a Triumph expert told me.It was Doug Hele who told me..I had a little chat with him in my journalistic capacity at the Bonneville Celebration, You must have been there Roy?..My money is on him though I must say.
[ This message was edited by: bonnietiler on 2007-02-27 02:45 ]
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