I was reading your spray test again. Is it possible it increased rpms because the spray was being sucked into the carb by the air injection horn? If so, the spray test is a red herring.
Sorry muffler side. Corner of the cylinder on flywheel side.
Used mityvac 8500. 6 psi for 10 mins. Both pressure and vac no a movement.
you need to reline up flywheel and make you some marks so you know if it is jumping timing
I've heard that 10psi on pressure tests and anywhere from 10"hg to 16"hg on vacuum tests is considered valid. Maybe you are not applying enough of each? Personally I use 10 psi pressure and 10 in-hg for the vacuum.
I use a MityVac 8500 too - great unit.
Sand the back of the bearing cover perfectly flat, use sealer on the surface, loctite the bolts.
This is the first I have heard of using sealant on the surface of these. The o-ring should really be all that is needed but obviously some people have had different experiences.I did use scotch Brite to clean it all up. Can try the sealer on the surface. Gonna loctite all the bolts and seal holder
Did you put sealant around the bore that the seal sits in before pressing the seal in?
Have any tricks on how to get the crank seal out of the holder by chance??
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