SnoWest Snowmobile Forum - View Single Post - Head shim + rebuild
View Single Post
  #2  
Old 08-11-2016, 07:36 AM
MTN_VIPER's Avatar
MTN_VIPER MTN_VIPER is online now
Currently: Making roll-over valve kits since 2008
Join Date: Nov 2007
Location: NW WA St.
Age: 60
Posts: 843
Thanks: 144
Thanked 276 Times in 187 Posts
Rep Power: 14412543
MTN_VIPER has a reputation beyond reputeMTN_VIPER has a reputation beyond reputeMTN_VIPER has a reputation beyond reputeMTN_VIPER has a reputation beyond reputeMTN_VIPER has a reputation beyond reputeMTN_VIPER has a reputation beyond reputeMTN_VIPER has a reputation beyond reputeMTN_VIPER has a reputation beyond reputeMTN_VIPER has a reputation beyond reputeMTN_VIPER has a reputation beyond reputeMTN_VIPER has a reputation beyond repute
Default

Since it has coolant in the oil and you have no way of knowing how long it was ran in this condition. I would go ahead and pull the lower case (oil pan) and rod/main bearing caps to inspect the bearings. These engines run tight bearing clearances (usually around .001") and if the oil is contaminated or ran low on oil it can damage the bearings fairly quickly.
If there is bearing damage and you try and run it, there is a chance that it could spin a rod bearing and pitch a rod through the side of the block. Normally it's the center rod that lets go first.

It's probably not the answer you wanted to hear, but I would pull the motor to do the tear down/inspection. As it sits now you have a rebuild-able engine and by tearing it down you'll know for sure if it's sound before spending more money on it.
__________________
Four Stroke Solutions LLC
Patented Roll-Over Valve Systems
ROV kits for M/XF7000/Viper, Sidewinder and King Cat with Quick-prime!
For Arctic Cat and Yamaha Sleds
Patents 8,225,766 8,528,516 9,303,537

http://fourstrokesolutionsllc.webs.com/
e-mail fourstrokesolutionsllc@hotmail.com
Reply With Quote


Rate this post: Yes | No