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- Feb 15, 2006
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Yes, because of the thrust washer design, high torque clutches were also identified as another cause of excessive bearing wear leading to eventual crankwalk.
Now, maybe this is the reason why high boost might have been wrongly diagnosed as one of the causes of the crankwalk, as it's more than likely anyone who's turned up the boost would have an uprated competition-grade clutch installed. I'm inclined to agree with you that it's more due to clucth pressure.
This problem affects even the EVO IV, as it uses the same washer design as the I-III, and was only ever rectified from the V onwards, when Mitsubishi introduced a new 2-piece washer design that has reduced instances of crankwalk. Sadly, this new style washer cannot be retrofitted to earlier Evos without machining the block to accept it.
Now, maybe this is the reason why high boost might have been wrongly diagnosed as one of the causes of the crankwalk, as it's more than likely anyone who's turned up the boost would have an uprated competition-grade clutch installed. I'm inclined to agree with you that it's more due to clucth pressure.
This problem affects even the EVO IV, as it uses the same washer design as the I-III, and was only ever rectified from the V onwards, when Mitsubishi introduced a new 2-piece washer design that has reduced instances of crankwalk. Sadly, this new style washer cannot be retrofitted to earlier Evos without machining the block to accept it.
