TowerDog
New Member
787 rebuilt from SES this is the BYO option. Motor sat around for 2 years finally put it in this year. Ran for about 5 hours, looks like rotary valve seals are bad. Had a lot of oil in the cylinders and exhaust. Took a look at the PTO cylinder since it was low on compression test, 0 to be exact and seen the walls and ring are scored. Before I call SES what could be the cause of this ? Running premix 32:1 per SES recommendation. Could this be an issue with the carbs and not getting oil to the cylinder ? The rotary valve seals went bad around 3-4 hours since that the motor was just soaking the plugs. I pulled the motor and filled lines to the rotary valve and they went down over a day or two so I know it's those that were leaking. Motor ran pretty damn good.