Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
I'm leaning towards the sumping conclusion. How much oil should be in crankcase after it's been rode for 15 minutes? Thinking maybe the O rings for the oil pump didn't like the cold winter and or they were damaged during install of the cams 7000 miles ago. Thanks
Check for sumping after a ride and carefully remove the pipe plug on the right (brake) side of the crank case. If more than 6 ounces drains out, the motor is sumping. The fix is replacing the o-ring at between the oil pump scavenge spigot and the crank case. Years ago, I started using an additional o-ring behind the scavenge port o-ring to insure a tight fit at the scavenge port. I use the o-ring that goes on the oil pan drain plug for that purpose PN 11105. Also align the oil pump when putting things back together and carefully tighten the pipe plug. Apply some thread sealant and just snug it up; no need to go "gorilla" on it.
06-21-2018 | 09:28 AM
