First I would like to thank you for the comments and suggestions about my
problem.  JP was right on my having to run a compression check, #7
cylinder had only 20LBS of pressure.  I pulled the engine and found that
the compression ring had split in two. In some ways that was a good thing
because there was no damage to the cylinder wall.  I have it at the
machine shop now for cleaning the block and to check the bearing sizes.
The car had R1 heads on it when I bought it and a set of R2 heads in the
trunk.  It is an R2 engine.  I would like to have R3 valves installed in
the heads.  Would it be a good idea to buy standard V8 heads and have
those worked?  I am thinking that if the shop tells me that I need to go
to oversized pistons that this would raise the compression close to the R2
heads and I would not have to wreck the R2 heads and would keep the R1
heads for my other R1 Avanti. Any thoughts or suggestions why I should or
shouldn't do this?