2.4 6 bolt crankwalk?
 

So I finally got to drop the trans, since I thought the flywheel bolts backed out again. Come to find out theres as tight as can be. Whats weird though, I can shake the flywheel and the crank moves. I know its possible that any crank can walk, but is this the case here? Or are my bearings just shot! I still have to drop the pan and will get to that tomorrow. Just wanted to get some opinions.

The car had a really bad vibration on acceleration and deceleration.

Re: 2.4 6 bolt crankwalk?
 

If you can wiggle the crank front to back, your thrust bearing is shot. Sounds like crankwalk to me. How did you set the crank?

Re: 2.4 6 bolt crankwalk?
 

It's defenitly more side to side than in and out. I can't move it now that the flywheels off, but when it was on it moved a good 1/4in or so.

I didn't I bought the car with the motor in it. It was done prolly 6 years/30,000 miles ago when the motor was built. I'm not an engine builder so I guess I don't know what to do from here. Except obviously start gathering parts for the build.

If you guys don't know, I bought this car from Jim (talonfiero). Funny thing is I just told him last weekend that it was gonna be down for a year, to get all freshened up after maps event. To bad it's time came a few weeks to early!

Re: 2.4 6 bolt crankwalk?
 

Side to side? Sounds like some impressive wear. Get pics up when you tear that sucker down. I wonder if whoever built it plastigauged it at all. Crank might be out of round. Mains may be out of round if it wasn't line honed with ARPs.

Re: 2.4 6 bolt crankwalk?
 

Pulling out tonight. I'll be updating the project thread for now.

Re: 2.4 6 bolt crankwalk?
 

Side to side? Even if the bearings were missing entirely it wouldn't move 1/4". Best to pull it apart and assess the damage. It made it 30k miles so it doesn't sound like anything to do with assembly, probably just living a hard life or possibly run low on oil recently. If you find the block is shot, shoot me a PM, I might have a cost-effective solution for you.

Re: 2.4 6 bolt crankwalk?
 

Yeah, it was built good! 30k on a build isn't bad at all. When I say a 1/4 inch that's how much the flywheel moved while it was bolted to the crank. I can barely move it with the flywheel off.

I'll prolly be contacting you through pm either way. Lol

Re: 2.4 6 bolt crankwalk?
 

Dropped the pan, nothing in the oil at all! Got pumped after looking everything over and all looked good. Then I shook the flywhell and found the culprit! There is a crack in the crank, on the flywheel side of the #4 connecting rod. So I dont think Ill need a total rebuild.

Re: 2.4 6 bolt crankwalk?
 

Unreal! Lucky it didn't grenade man! Carnage pics whenever you get it apart.

Re: 2.4 6 bolt crankwalk?
 

there really was no carnage. Just gonna have a crank come out in two peices! :)

Sidebar-I heard ur car put down some nice power. Good for you man, keep it up!

Re: 2.4 6 bolt crankwalk?
 

If 2.4 cranks break, its always near where yours broke.

Mine hasn't broken yet, 4 years later. KNOCK ON WOOD

Re: 2.4 6 bolt crankwalk?
 

2.4 cranks break? glad I hear this NOW, right after I get done swapping one in.

Re: 2.4 6 bolt crankwalk?
 

^^^ You could always swap it out and Ill buy it. LOL

Re: 2.4 6 bolt crankwalk?
 

Oh and this was not crankwalk!

Re: 2.4 6 bolt crankwalk?
 

Any one what kinda power are breaking them at? Or is it just chance?

Re: 2.4 6 bolt crankwalk?
 

for you, $3k. :D you can have the rest of the car with it, haha

Re: 2.4 6 bolt crankwalk?
 

I found a crank, Im good!