jackthemachinist
80+ Posts
Can't touch the 250k on that 91 Ultra, but I just turned 100k on my 2001 Softail. Had to replace the cam chain tensioners twice, and the fuel lines in the tank. Otherwise just normal maintenance.
I routinely have Harley Evo and Twin Cam heads come through the shop with 100k miles on them with the valves and guides fine. Panhead and shovelhead Harleys were often lucky to get 30k before guides and valves were shot. Materials and geometry are much better on the newer stuff.
My old Kawi KZ1000 needed guides and valves at 50k.
I routinely have Harley Evo and Twin Cam heads come through the shop with 100k miles on them with the valves and guides fine. Panhead and shovelhead Harleys were often lucky to get 30k before guides and valves were shot. Materials and geometry are much better on the newer stuff.
My old Kawi KZ1000 needed guides and valves at 50k.