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  #23  
Old October 21st 05, 04:02 PM
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Default BB 366 - rockers clatter; oil pressure but no oil at rockers

I pulled the head last night. Found that the top of the #5 piston has
been making contact with the head - the top of the piston was pretty
beat up from the piece of exhaust valve that came off, but I thought it
would be ok. Now I see that some of the raised bumps are making
contact at the flat area of the head - not the dome where the valves
are but the squish area at the back. I'm going to replace the piston,
rings and bearings and check to make sure the rod is ok. I don't
understand why baking the exhaust rocker would make the problem less -
maybe the pressure in the cylnder from not letting the gasses out is
keeping it from touching as hard?

The bumps are small - maybe the size of #2 pencil lead, but there are
several and they are shiny from hitting.

Will post a followup when it's all back together.

Thanks again for all the help - lot of smart people here.

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