The 2.6 has a pretty long stroke for low end torque. A long stroke gets you higher piston speeds and makes the 4 cyl sahke problem worse.
Once they had a design with the ballance shafts having light pistons and rods as not as much of an issue and a long stroke 4 cyl was as smooth as a six cyl... So the 2.6 gets some pretty beefy parts and a long stroke for good torque.
Want to do a 4 cyl without ballance shafts? Use a short stroke, light rods and pistons and tune the major components that are bolted to the motor to have a high resonant frequency.
This site and all original materials contained herein are Copyright 1999 - 2013 by OutdoorWire, Inc. -- All Rights Reserved.
You may link freely to this site, but no further use is allowed without the express written permission of the owner of this material.
All corporate trademarks are the property of their respective owners.
This publication and OutdoorWire, Inc. assume no liability for your use of the material contained within this site.
OutdoorWire, 4x4Wire, SUVWire, JeepWire, MUIRNet-News, and 4x4Voice are all trademarks and publications of OutdoorWire, Inc.