Quote:
Originally Posted by wrxkidid
Another mistu related question. What exactly is crank walk, and why do the older 1g and 2g DSMs have problems with it but the new 4g63t in the Evo 8/9 not have it?
Sorry to semi change topics but it seems to better be put in a single mistubishi thred on a subaru forum than to upset the old farts *cough* Dean *cough* haha just kidding  |
Crankwalk is the excessive thrust bearing play of the crankshaft. It's caused by the combination of improper bearing fitment, misalignment of the main caps under forced load, overturned mains on the crank, and overall sloppy assembly procedures. While factory and improperly built 7-bolt 95-99 2g engines are more likely to experience this problem than the '90-92.5 6-bolt and '93-94 7-bolt 1g engines, any engine can develop it. There are ways to remedy this manufacturing flaw in the 2g motors, but all will warrant a rebuild; Ie: Main cap dowels, correctly sized main bearings, stronger rods, proper assembly.
Crankwalk isn't unheard of to the Evolution crowd. I wouldn't be surprised if crankwalk becomes a larger issue when the majority of hard driven 8's and 9's start pushing into higher mileage ranges.