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Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
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smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
About 2 months ago my machine shop discovered that I had the wrong valves. No problem, I figured out that the head I had needed Spit IV type valves, ordered them and dropped it all off. Now he tells me that the exhaust valves are a tiny bit to small.
I took a look and they are a very tiny bit smaller maybe .5mm or so. They are the correct part#
What he says is that there is not enough overlap between the valve and the seat. How much should there be? the factory manual shows a 1.5 mm wide band touching which these valves should have, but will be right up to the edge. is this correct? any ideas, I am getting real frustrated and prime driving season is about to start.
I took a look and they are a very tiny bit smaller maybe .5mm or so. They are the correct part#
What he says is that there is not enough overlap between the valve and the seat. How much should there be? the factory manual shows a 1.5 mm wide band touching which these valves should have, but will be right up to the edge. is this correct? any ideas, I am getting real frustrated and prime driving season is about to start.