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Help! Some huge bolt fell off, need help to identify

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Old 07-27-2012, 10:39 AM
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That bolt is torque to yield and requires a certain torque sequence. not replacing it with a new bolt risks the balancer spinning freely and damaging the crank shaft. I had one come loose years ago when a mechanic doing a motor swap for me failed to use a new bolt and the balancer rounded off a chunk of the crankshaft as well as the messing up the front cover seal. I ended needing a new crank. Is it worth the risk not replacing it? Also you could probably find one on ebay.de if your creative in your search and have it in less than a week.
Old 07-27-2012, 10:41 AM
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its a stretch bolt and should be replaced
Old 07-27-2012, 10:53 AM
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yes of cause this is right, funny thing is, I was tuning the car for 2 events that will be tomorrow
Old 07-27-2012, 10:58 AM
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Originally Posted by Vetal
I just wonder what's the need for new bolt for such a thing? It's not head or bearing caps where torque is crucial...
That's a TTY bolt.
Old 07-29-2012, 05:01 PM
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If you don't want to use the GM TTY bolt you can pick up a ARP bolt. Use red loctite on the threads and their moly lube on both sides of the washer and be prepared to use a big *** breaker bar. I think its like 240 ft lbs or something stupid like that.
Old 07-30-2012, 06:33 AM
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Big-*** breaker bar is not a problem, but how would I lock the crank? I tried locking one of torque converter's pad against ground, but at ~120lbs*ft whole nose starts to rise
edit: yes this was the balancer bolt ( how lucky I was to loose it at 40mph not 120
Old 07-30-2012, 11:48 AM
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Originally Posted by Vetal
Big-*** breaker bar is not a problem, but how would I lock the crank? I tried locking one of torque converter's pad against ground, but at ~120lbs*ft whole nose starts to rise
edit: yes this was the balancer bolt ( how lucky I was to loose it at 40mph not 120
flywheel holding tool is needed for an auto car, for manual guys the e brake and 4th gear works.
Old 07-30-2012, 12:04 PM
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His location shows as "Latvia" northern EU I believe. Does anyone have a Spec for this bolt? maybe he can get one locally, they do have cars there.
Old 07-30-2012, 05:49 PM
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No problem, I'm ordering the bolt tomorrow and it will be here in about 11 days. As far as I remember service manual says 37lbs and then 140 degrees more, BUT before this OLD bolt must be installed with 240lbs*ft which is huge. Damn that's twice the torque typical Honda makes :O
I don't know, this whole "240lbs" thing looks stupid and crazy to me.



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