So i just installed my kit and i started breaking it in. Did proper warmups,broke it in 1 mile than 3 miles, than i started on my 50 miles. As i was riding 11 miles in i started to hear this noise sounds like a nut or something is hitting inside of the motor. This is what i did. I checked to see if anything was loose externally nothing seems to be loose. Opened the top covers to see if a bolt came off and nope all of them are on. I retuned it with the tune they gave me not triming the variables. I used the same oil but its filled. Would i have to use different oil ? Is it thining? Not sure what it is any help would be great.

 

Did you make sure the circlips were in all the way on the piston wrist pins Call Aaron or Dan and run it by them.

 

I'd call Hammer ASAP, they've heard everything.

John

 

 

Did u check the squish on both cylinders before final assembly. +1 on the talk to hammer comment

 

The holes for the rocker arm bolts are a bit larger than the bolts. The rocker arm covers have a bit of play back and forth before the bolts are tightened. What if the cover has been tightened and skewed in one direction enough that a push rod is sightly rattling against the frame or one of the push rod tubes??? Try loosening the covers and move them to a sightly different position. I remember reading this in a blog somewhere.