ls2005019227
Plastic
- Joined
- Jun 16, 2006
- Location
- Eunice, MO
I'm working on a 2012 Bennche Bighorn 700x (think 2006 Yamaha Rhino 660), and the threads in a couple of the bolt holes in the aluminum cylinder head are stripped out (for bolts that hold the valve cover on). The original bolts are 6mm, and have a torque spec of 7.2ft-lbs; which was obviously exceeded at some point prior to my ownership. I know that Heli-coil is an option (I don't have any), but just planned on drilling/threading the hole in the head oversize (9mm) and making inserts (9mm O.D. [male] and 6mm I.D. [female]) to fit. Since this is an aluminum cylinder head, it will be subjected to heat, and I'm not sure what material would be best to make the inserts out of..... I have steel, aluminum (6061 & 7075), stainless (416, 15-5, & 17-4), and bronze, that I could use. I subscribe to the Tom Lipton's "Nothing too strong ever broke" mentality, and want this to be the first/last time that I have to repair these. What material would be best for this application? Any concern in using a dis-similar material (if that's your choice)?
I also planned to use Permatex threadlocker red for securing the inserts; is this viable, or should a mechanical locking method be used (if so, which one)?
Thanks for any replies/wisdom!
I also planned to use Permatex threadlocker red for securing the inserts; is this viable, or should a mechanical locking method be used (if so, which one)?
Thanks for any replies/wisdom!