I have an 06 Mastiff that had 13000 miles on it and the motor blew to pieces. Valve broke and went into the lower end. The motor was sent back to S&S for a complete rebuild including new S&S rocker boxes. Original boxes were TP. The new motor was broke in exactly the way S&S said to do it. This bike has never been run hard or over reved. The new motor now has 6000 miles on it and it is smoking so bad that when I take off from a stop light I cannot see the car behind me. On the freeway it does not smoke but in town it feels like it is loading up and starts smoking badly. The smoke is white and it comes from both exhaust pipes. The carburetor main jet is 074 and the intermediate is 032 and I have a Vance & Hines 2 into 2 exhaust system with a Wimmer air cleaner. I am beginning to loose faith in S&S. With only 6K on this motor the guides should not have to be replaced. I am getting ready to pull the top end apart but before I do I would like to know if it could be something other then valve guides. If it is valve guides that are causing this problem wouldn't the smoke be a darker color. I would have thought that these guides would last longer then 6 thousand miles.
Smoking Motor
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BigDogBro1
Made in the USA
Have you contacted s&s about this problem?
Upper end venting working?
Oil backing up in lower end because of 10 micron filter or bad oil return pump and pushing past oil rings?
Upper end venting working?
Oil backing up in lower end because of 10 micron filter or bad oil return pump and pushing past oil rings?
I contacted them 5 days ago and they said they would get back to me. I am quickly becoming very discouraged with S&S and their quality control. 13 thousand miles on the first motor and only 6 thousand on this one. Both motors should have lasted a hell of a lot longer then they did.