Hi Guest!
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! >> 
D
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Talked with my machinist an hour ago.
.002", and the issue is usually wrong guides. Sleeves take more work to function long-term, but there are some spurious guides out there that don't work. Bronze, and if the outer finish is dull, walk away. Needs to be shiny.
Tooling. Gets worn, and folks think a reamer that would give them .002" clearance is good, but it's worn and they don't want to replace tools, then you get too tight, and if that's the case, it will probably be all of them.
If it was mine, I'd be pulling the head and having the valves and guides checked.
Last thing that you need it to be on a trip, climb a 3,000 foot grade in the summer, and have this or worse happen.
.002", and the issue is usually wrong guides. Sleeves take more work to function long-term, but there are some spurious guides out there that don't work. Bronze, and if the outer finish is dull, walk away. Needs to be shiny.
Tooling. Gets worn, and folks think a reamer that would give them .002" clearance is good, but it's worn and they don't want to replace tools, then you get too tight, and if that's the case, it will probably be all of them.
If it was mine, I'd be pulling the head and having the valves and guides checked.
Last thing that you need it to be on a trip, climb a 3,000 foot grade in the summer, and have this or worse happen.