i dont think it matters what mileage the car is at. ive heard of dsms walking at 60-70k miles all the way to dsms walking at 150k miles. i guess its just the luck of the draw too, although the crankwalk problem is somewhat rare. i dont think it matters how much you take care of the car, it could still happen. a buddy of mine rebuilt a 7bolt, put a nitrated 7 bolt crank in, and it still crankwalked.

but then again, any car could bust a crankshaft. just seems a bit more likely with a dsm.

i have never heard of any problems with a 6 bolt, ive only heard it was the solution to all 7 bolt problems, and nothing bad.

 

<<<<<<<waits for the fun to start
\

 

I love all the testamonials from 7 bolt haters. Statements like "I built a 7 bolt and used a nitrided crank and it still walked" and " I had three 7 bolts in my car and I took car of them and they still walked" and " I built a 7 bolt motor and it walked after 2000 miles" Whats a farce about these statements is the 7 bolt motors that were originally released from mistubishi didn't fail from crankwalk till they had 50,000 miles at least. Most went much farther. So we have Rob who I personally know has not driven his 7 bolt cars 50,000 miles on each motor only to find they crankwalk. So the motors he had already had high miles/crankwalk before they even went in the car. Then theres the " I used a nitrided crank and it still walked" Heres another hogwash example of an impossibilty. The nitrdied crank theory has only been around for 1 year. So some guy built a motor immediately after hearing about it. And drove the shit out of it and found after 50,000 miles it still crankwalked. Since this statement has been floating around for 6 months at least. Then the guy put 50,000 miles on his car in 6 montrhs. Yeah, the internet is fun. The last one is my favorite. Marco built a 7 bolt and it walked in 2000 miles. And this guy is respected for his achievements??? If ANYONE really has built a 7 bolt and it walked sooner than 50,000 miles, all that proves is YOU SHOULD NOT BE BUILDING A MOTOR OF ANY KIND. Gotta love the internet.

 

again i say if I havent proven to everyone that the crankwalk theory is all about taking care of your car then no one will. I had an unsprung 4 puck bronze clutch in my car for over 30,000 miles my car reads 82k but thats only because i drove it for a year and a half with the spedo unplugged.

Rob please show me where there is proof that an EVO crankwalked. There are a lot of people who claim "crankwalk" when in fact all they did was blow up their engine. Jerry had/has proof of a 7 bolt that trully crankwalked by (insert exagerated number here) and it was still running.

 

DAmN this is going to get good ....

 

7 bolts break doorhandles

 

damn, im going to have nightmares tonight after reading this

waiting for crankwalk crew member #1

 

Not going to get involved in this debate . I will say there was a local guy who had his 2g walk with under 35k miles. Mitsu put in a new engine in under the factory warrenty and it walked again in less than a month.
You can not debate that 7 bolts are known to walk from time to time. But so do 2JZ`s.

I dont see myself ever owning a 2g so I will never have to deside on the swap or not. I dont believe I would swap in a 6 bolt though. I am sure I would give the nitrating the 7bolt crank a try. Mainly because if or when I one day get a EVO I will have no fears of modding the hell out the 7 bolt it will come with.

 

i would really like to see a dsm that walked at 150k miles

 

you mean 150k miles on the motor? I think if it hasnt walked yet, it wont. although everything always just keeps getting older.

well i personally know the guy that did a rebuild like that. he rebuilt a 7 bolt with a nitrated 7 bolt crank, and it actually crankwalked a little after 5000 miles. he had a pretty heavy clutch in there, and one night they put new master and slave cylinders in, and of course new fluid. after that, when they start it up and run it, it was the full hydraulic force and it walked.

maybe i imagined watching the guy taking apart the CWed engine after that.

Ive talked to a lot of different guys in real life that have all rebuilt dsms and run them and tune them, and when i started posting on this site just last night for the first time, this is the first time ive heard anyone say a 7 bolt is bettter than a 6 bolt. so i guess its just up to personal experience. PERSONALLY, i guess I cant really talk, i have a 7bolt that is running fine. but after doing a lot of reading and talking to a lot of people, my conclusion is that crankwalk is somewhat rare, but still happens. my car has 102k miles, and no problem...yet.