View Single Post
  #54  
Old 05-17-2014, 11:25 PM
admranger's Avatar
admranger admranger is offline
Member
 
Join Date: Mar 2009
Location: Las Vegas
Posts: 1,636
admranger is on a distinguished road
Quote:
Originally Posted by bcredliner View Post
If the torque is only 10lbs, why should there be concern about cracking caps when you remove them or a need a torque sequence when they are tightened? Wouldn't hurt but why is it a necessity?
You aren't worried about cracking the caps, you are worried about cracking a CAM!

Maybe it isn't a problem on our engines, but on the S50/52, you needed to do this carefully as the residual stress in the hydraulic lifters would be enough to crack a camshaft if things weren't done right. There was even a $$$$$$ fixture to hold the cams down while you undid the nuts. If you didn't have the fixture (no one did), then people learned to gently release the pressure on the cams by slowly taking the nuts off in deliberate manner.

OP -- get a 1/4 inch torque wrench (it'll read in Nm and inch-pounds). Multiply inch-pounds by 12 to get to ft-lbs. You don't want to use a torque wrench at the limits of its range if you can avoid it.
__________________
Kirk
Las Vegas
2016 X5 40e Mineral White/Black Dakota Leather, ZLL, ZCW, ZDA, ZDB, ZPP, multi contour seats, rear side window shades, HK stereo
2011 E90M3, 6-speed manual
Reply With Quote

Sponsored Links