Crankshaft Repair Pics Inside
Team Owner
Joined: Jul 2012
Posts: 34,479
Likes: 532
From: Central PA. - - My AR15 identifies as a muzzleloader
I believe in the Beer Fairy
X-rayed? Who does this?
Welding is out of the question. Yes, it would do all sorts of bad things, not the least of which is to bend the crank. It would make hard/soft spots, it's just not an option.
The material you'd be removing isn't 'really' performing any function, it can be removed. It's just that the defect is capable of creating a weak spot because of what it does to the material around it.
Last edited by K-Spaz; Oct 25, 2012 at 10:06 PM.
Melting Slicks
Joined: Sep 2011
Posts: 2,258
Likes: 544
From: Appleton WI
I'm not an expert but here is my opinion.
Welding is not an option. You'll relieve and induce stresses in the part.
x-ray will not find a crack that Magnaflux doesn't. The material is too dense, the crack would be too fine, and the proper angle likely not achievable. If you want to test further, you could do the ring check by suspending the crank and hitting with a hammer (crude but effective). It should ring like a wind chime. Or have an ultrasonic inspection.
You could grind any sharp indentations but would have to check balance.
Based on the pictures, checking clearance of the connecting rod may be necessary.
If you were putting this in my 405HP Z06, I wouldn't think twice about it. I would however think twice about a 1,000HP application unless a trusted race shop expert indicates otherwise.
In situations like this, I gather as much information I can to make an informed decision. Then I let my gut tell me what the right choice for me is.
Welding is not an option. You'll relieve and induce stresses in the part.
x-ray will not find a crack that Magnaflux doesn't. The material is too dense, the crack would be too fine, and the proper angle likely not achievable. If you want to test further, you could do the ring check by suspending the crank and hitting with a hammer (crude but effective). It should ring like a wind chime. Or have an ultrasonic inspection.
You could grind any sharp indentations but would have to check balance.
Based on the pictures, checking clearance of the connecting rod may be necessary.
If you were putting this in my 405HP Z06, I wouldn't think twice about it. I would however think twice about a 1,000HP application unless a trusted race shop expert indicates otherwise.
In situations like this, I gather as much information I can to make an informed decision. Then I let my gut tell me what the right choice for me is.
Thread Starter
Racer
Joined: Sep 2005
Posts: 498
Likes: 0
From: Rockville/Abington MD & PA
I'm not an expert but here is my opinion.
Welding is not an option. You'll relieve and induce stresses in the part.
x-ray will not find a crack that Magnaflux doesn't. The material is too dense, the crack would be too fine, and the proper angle likely not achievable. If you want to test further, you could do the ring check by suspending the crank and hitting with a hammer (crude but effective). It should ring like a wind chime. Or have an ultrasonic inspection.
You could grind any sharp indentations but would have to check balance.
Based on the pictures, checking clearance of the connecting rod may be necessary.
If you were putting this in my 405HP Z06, I wouldn't think twice about it. I would however think twice about a 1,000HP application unless a trusted race shop expert indicates otherwise.
In situations like this, I gather as much information I can to make an informed decision. Then I let my gut tell me what the right choice for me is.
Welding is not an option. You'll relieve and induce stresses in the part.
x-ray will not find a crack that Magnaflux doesn't. The material is too dense, the crack would be too fine, and the proper angle likely not achievable. If you want to test further, you could do the ring check by suspending the crank and hitting with a hammer (crude but effective). It should ring like a wind chime. Or have an ultrasonic inspection.
You could grind any sharp indentations but would have to check balance.
Based on the pictures, checking clearance of the connecting rod may be necessary.
If you were putting this in my 405HP Z06, I wouldn't think twice about it. I would however think twice about a 1,000HP application unless a trusted race shop expert indicates otherwise.
In situations like this, I gather as much information I can to make an informed decision. Then I let my gut tell me what the right choice for me is.
