I know the timken bearing conversion is the best when going to large ci's , but has anyone tried the new HD lefty bearing instead? Is it a direct replacement for the oem bearing?
Thanks
Tim

 

Yep have had one in mine for 4 years 2 years as a 103" 2 full years as 110" have had no problem what so ever. When I put it away this winter it should have around 50M miles on it.

I should also say when I went to the 110" I did buy a new bearing for it so this one only has 24M miles

 

yup direct replacement for the oem bearing. Press out, press in.

I use them on motors with tq targeted less than 120-125 tq. If i am shooting for more, they get a timken in the left case.