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"Another question has to be asked. Why is it then that crankwalking usually occurs after a rebuild? I have done searching and couldn't find that many that walked unless they have been worked on."
I cut and pasted this from a previous reply in this thread. It is not a true statement. Crankwalk also happens after 50k! Actually, I found a stock 2G than had it at 43k! From my own experience I find maybe 30% of the 2G's I have worked on came in with some amount of non-spec crankwalk. I have seen only one 1G with it, a '93.
I helped a friend buy a clean, stock '95 GSX that was in a Mitsu shop at 106k torn down due to crankwalk. The car was a 1-owner and driven by a 30-year old nurse/single mom. (It was not abused whatsoever. She even had her car named... who could abuse a car with a name?) She explained that the car developed crankwalk at 53k and was repaired under warranty! Funny that at 106k (2 X 53k) it was in the shop again for crankwalk! Mitsu has a problem with that 2G motor design.
A big block engine builder told me that crankwalk was a problem for the drag cars with manual trannies back before auto trannies became popular in drag cars. He said that the thrust bearing in the big block engines had to be replaced after just ten runs down the track! Most Mitsu thrust bearings last a little longer than that now so maybe science has advanced a little?
Rick
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