So... my crank pulley flew off while driving... wtf?

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Old Mar 13, 2003 | 03:42 AM
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Tofurky's Avatar
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Default So... my crank pulley flew off while driving... wtf?

it's totaly gone, adios. couldn't even find it...
took off, boosted.... the loud clunk noise, battery light comes on... i pull over asap... check... the crankshaft pulley disapeared! the belt was still there though, hanging on the alternator...
went back to look for it, after an hour of searching no luck...

seriously though... what could have caused this? just lazy block assembly ?

could this have caused any serious damage?
could I have damaged it by driving home? well I drove for like 15 seconds, then was able to roll 90% of the way back.

installation should be a breeze right?, just get a new pulley & bolt...?

TIA


Note: I didn't assemble my own block. I didn't trust myself, and figured professionals would do it much better, and allow me to sleep safer at night. But I think I forgot that even "professionals" get lazy sometimes.



[Modified by Ruckus138, 5:00 AM 3/13/2003]
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Old Mar 13, 2003 | 04:09 AM
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Finest's Avatar
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Default Re: So... my crank pulley flew off while driving... wtf? (Ruckus138)

Yea, same **** happened to me too! Driving along fine, then the batt light came on. WTF? Pulled over, popped the hood. Crap, the crank pulley backed out and the belts were gone. Scratch my head, and hurry back home. I don't believe there is any damage to the motor or whatnot, it's just running off the battery, so hurry back home before you lose power. But I tell ya, the car did feel a bit zippier! I guess no load on the crank = quicker acceleration?

Anyways, I heard that there's suppose to be a "key" that goes somewhere in the pulley when you bolt it back on. I haven't checked, cuz when I got home, I just used an impact and zipped the bolt back in. Hasn't come off in the last 3 weeks, so I hopefully this is the last time.
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Old Mar 13, 2003 | 04:10 AM
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Default Re: So... my crank pulley flew off while driving... wtf? (Ruckus138)

That sucks!! Should be simple ......bolt one back on and go.

I have been worrying about this exactly as I have not torqued mine to spec yet........
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Old Mar 13, 2003 | 05:05 AM
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Default Re: So... my crank pulley flew off while driving... wtf? (Farnsrocket)

damn, torque it down to 130 lb/ft, then loosen it then re-torque it again just to be sure

stan
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Old Mar 13, 2003 | 05:05 AM
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Default Re: So... my crank pulley flew off while driving... wtf? (Ruckus138)

A dingo ate your crank pully?!!!!

Sorry, couldn't resist.

I would be seriously worried about whoever built your engine if the didn't torque THAT down properly. I'm assuming that the bolt was missing as well. Its possible that it could have cracked clean through and fallen off that way but more likely it just slipped off the end of the crank. Check for any obvious damage of course but I doubt it screwed anything up.

Mike
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Old Mar 13, 2003 | 05:16 AM
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Default Re: So... my crank pulley flew off while driving... wtf? (92sleepR)

All I can say is that I hope it didn't damage your motor like it did mine. My crank pulley started to rattle one day, and about a minbute later it flew off as I was pulling into my driveway. The key sheered off part of the keyway on the crank, and the bolt stripped all the threads on the way out of the crank.

I just got my car running again last friday after it was down for 2 months. Here's a picture:
http://www.a-ocs.com/chris/crankshaft/MVC-007X.JPG

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Old Mar 13, 2003 | 05:55 AM
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Default Re: So... my crank pulley flew off while driving... wtf? (94TealGSR)

jeez, that's crazy. i brought my car to a nearby shop to use their impact to get the damn pulley bolt loose and then i hand tightened it with a ratchet and drove home scared it would fly off but it didn't even come loose. u gonna ask the shop to reimburse you for parts?
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Old Mar 13, 2003 | 05:56 AM
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Default Re: So... my crank pulley flew off while driving... wtf? (94TealGSR)

How in the hell did you fix that? NEW CRANK?
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Old Mar 13, 2003 | 06:27 AM
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Default Re: So... my crank pulley flew off while driving... wtf? (98CTRCoupe)

How in the hell did you fix that? NEW CRANK?
thats my guess...I woulda beena cheap ******, and re-tapped it/ground off anythign in the way, and ran the damn thing But thats me....maybe he wanted to rebuild anyway?
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Old Mar 13, 2003 | 08:17 AM
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Default Re: So... my crank pulley flew off while driving... wtf? (Ruckus138)

holy ****! who assembled ur block?
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Old Mar 13, 2003 | 09:25 AM
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Default Re: So... my crank pulley flew off while driving... wtf? (DIRep)

holy ****! who assembled ur block?
yeah no kidding, thats no good for business...hope nothing serious happened to your car/crank...
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Old Mar 14, 2003 | 03:48 PM
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Default Re: So... my crank pulley flew off while driving... wtf? (94TealGSR)

damn man that's some real bad luck.


no, so far everything looks totaly kosher. came out clean. but now I have to wait for the stupid bolt to come in through honda.
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