Cracked crank, Yet more problems |
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Cracked crank, Yet more problems |
jeffdon |
Jun 29 2014, 02:23 PM
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#1
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Senior Member Group: Members Posts: 1,094 Joined: 24-October 06 From: oakland, ca Member No.: 7,087 Region Association: None |
Put my engine back together in November, and have been driving since then. Couple of 200 miles drives, mostly around town. Itts a 2056, webers, cam, nothing super high power. This weekend it started an awful clunk deep inside, and I got it off the road and towed home.
Got her puller apart, and here is what I have found. Crank broke threw the rearmost counterweight. How does this happen? So I need a new crank. What else should I replace? Obviously all main bearings. Rod bearings too? Attached thumbnail(s) Attached image(s) |
Jake Raby |
Jun 29 2014, 07:35 PM
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#2
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Was the crank magnafluxed at assembly? That fracture appears to have been a long time coming based on the coloring around it.
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jeffdon |
Jun 29 2014, 10:02 PM
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#3
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Senior Member Group: Members Posts: 1,094 Joined: 24-October 06 From: oakland, ca Member No.: 7,087 Region Association: None |
Was the crank magnafluxed at assembly? That fracture appears to have been a long time coming based on the coloring around it. No, I admit to not doing that. The next one, for sure. Don't want to go through this again. I like to think I can build an engine to spec. Just seems I may have screwy parts. This time, i am going to get everthing checked out. |
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