Dave, I was looking through the Racing Beat catalog
and noticed the 1974 to 1988 counter weights have different part numbers
than the 1989-1995. I think you may have a 1986 to 1988 or 1974 to 1985
counter weight.

Paul Lamar

Paul, it is possible that you are right.  Though I can't immagine the putting the wrong one on.

My spare engine is getting ported right now.  After that is done I will get one of the 89-91 counter weights and bring it to someone to balance it.  Remember that the RB guy said that new ones don't have any balance holes drilled.  I will also install the 2-piece apex seals when I rebuild it.

After that is done I will swap out the engines.  Probably won't happen for more than a year.

Dave

I know it is extra money but I recommend the 3 mm two piece seals. You never know.
One out of the four injectors could suddenly fail causing a lean condition resulting
in detonation and 2 mm seal fracture.

Paul Lamar
 
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