Broken crankshaft

[Todd C]

Broken Crank

Yep, that was mine in the link above. Crank broke near the 4th main jornal. The harmonic balancer was bad, and my best guess is that was the cause. I'm hoping to rebuild it to turbo specs, starting in a few weeks. I had play at the flywheel too. You could hear a clunk (bang) internal when you rocked it back and forth.

 

[BigRigTech]

No Jasper engines up here in Canuck land, it was the original engine. I'm still waiting to hear what he found.

 

[NJKen]

Thats wild. I have never seen a 444 break a crank ever. Now there are 2 here in less than 2 months. I would be really curious to know where it broke. If the engine is pulled apert you gotta make sure some pictures get posted.
Maybee the cranks are timebombs in these engines and need a long time to develop their failure. That would not bee good to see a rash of busted cranks.
Ken

 

[BigRigTech]

I'm going to call him tommorow and see what he found, he may also need some help finding parts.

 

[BigRigTech]

Just for those who were wondering, I was talking to Roy today - the crank did break right behind the #3 main cap, snapped clean off. He found a good used engine locally and he said the wrecker is working great again.

 

[icanfixall]

Nice to hear things are up and running again. In the future any crank will work in a 6.9 or 7.3 motor. They are all the same. Even the part number and the casting numbers are the same. The differances are in the drilled balance holes.

 

[subway]

any chance of pics?

 

[BigRigTech]

Nah, I hardly see him unless he needs parts or he comes to buy my cat converters...He paid $800 for a low mileage used 7.3IDI.