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Discussion Starter #1
I installed underdrive pullies. For the crank bolt (which was new), we torqued it 75 ft lbs, backed it off on turn, then tightened it back to 40 then another 90 dregrees which yielded about 65 ft lbs. But it came loose and my car sounded like a diesel - really pretty scary.

We went in and tightened it down to about 80 ft lbs.


The consensus seems to be:

1) Torque the crank bolt to like 70 ft lbs
2) Back off one turn
3) Then 40 ft lbs
4) Then 90 degrees(1/4 turn) past that - a few people said that 1/4 turn (90 degrees) was 135-140 ft lbs.


How is that possible for that to reach 135-140 ft lbs?
 

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you need to torque it down to 115 ft/lbs. forget the precedure and just tighten it up. having a loose crank bolt is very bad, can lead to serious damage. after it is torqued down, re-check it after a couple of weeks.
 

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Discussion Starter #3
I spoke to Dan at Steeda. He suggested the same thing but to 116 - I'm going to 120.

Seems as though the diesel noise coming from the motor when it was loose was likely caused by the Senesor ring being loose and throwing an ignition signal and making the car knock. I drove it gingerly for 50 or so miles during the knocking and tightened it up right away.
 
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