Anyone had crank walk on 1g 7bolt

[1WheelDrive]

I have this little issue with my newly built motor. Ever since I got it back about 8000kms ago my idle goes down a little when I engage the clutch. The clutch I have is an RPS turbo clutch 2500. I am just wondering if my symptums are that of a walking crank.
Here they are:

Idle drops about 350rpm when I put the clutch in (has slowly gotten worse, used to only be 100 rpm)

Clutch sometimes does not fully disengage when I am slowing down. If I hold the clutch to the floor for a couple of seconds it usually does, and also if I pump the clutch it works fine. I can tell when the clutch doesn't disengage cause: one: the rpms don't drop below 1000 and two: there is no pressure at the top of the clutch. ( I have replaced the slave and bled the system about 4000 kms ago and no fluid has been lost since then).

Clutch engages in different possisions about half of the time

I recently (yesterday) have a terrible noise comming from the somewhere around the area of the exhaust manifold but nothing apears to be leaking and boost is still stong. It also vibrates a little more than normal (keeping in mind that I have no balance shaft and solid motor mounts, no mounts are broken iether) It is sortof sounds like a diesel motor on start up, and around 2000 to 2500 rpm under any load. Not so much while I'm in neutral though.

Although this motor is fully built with 9 to 1 cr je forged pistons, rods, head bolts, a b16g turbo and a bunch of other crap, I don't really bag on it. Infact, I would say I drive it easier than before I had it done. Max boost has been 17psi which for this application is low. Never leaned out cause It runs pig rich since I do not yet have it fully tuned. Sorry for the long post but if anyone has any ideas, please let me know.
Thanks.

 

[DSM90AWD]

Doesn't look good for you:

http://members.shaw.ca/costall/1000Q/answers-terms.htm#whatiscrankwalk

Did you get any warranty with your rebuild?

 

[1WheelDrive]

Thanks, I was looking for that info before I posted but couldn't seem to find it.
Warranty, grey area as my motor is a full race motor. When the open it up and see that it was them or the machine shop, it will be covered.

 

[1WheelDrive]

So, we found out the problem. Both Main bearings are worn down to almost nothing. I was probably about 5 more kilometers away from catastrophic engine failure.
So, they are telling me that my bearings where worn down from:

1) clutch problems - although my clutch only started acting up about 1000kms after I got the motor back with the above problems I thought might be related to crank walk which infact, in a round about way, where.

-----OR-----

2) over reving - god damn, ####ing bull shit. I do not over rev my motor! I don't spend $6000 to blow shit up. I've been driving a DSM for almost 4 years now and all of a sudden, my driving is ruining bearings. No. It's sad how my motor was in better shape before the rebuild. Besides, we all know that a 4g63 will handle many accidental over revs without any issues.

Personally, I think that the crank is out of spec, I will have them check it and get back to you.

 

[DSM90AWD]

A crank that was not aligned (a common problem with 2Gs) will definitely cause that problem. Mitsu psudo-remedied this after the fact by using "matched" bearings.

As for overreving.. your car has a revlimiter set to 7200RPM which you cannot exceed (well unless you downshift at 7200RPM ).. so tell the guy he's FOS on that theory.