Crank bolt torque for timing belt change (10v)

[Ameer Antar]

Yes, I agree w/ everything you've said. Maybe I didn't explain in the most precise wording...

---Original Message---
From: Kneale Brownson <knotnook at traverse.com>
Date: 12/1/03 8:16:20 AM
Subject: Re: Crank bolt torque for timing belt change (10v)

I thought a torque wrench applied a measured amount of torque TO THE SQUARE
DRIVE PART of its assembly????

If you put a 258 ft. lb. torque setting on a torque wrench five feet long
or one foot long and make it click, you've applied 258 ft. lb. of torque to
the square drive fixture.  The Audi tool is designed so that when you
supply the desired torque to the hole in its end, you've applied the
correct torque to the nut on the crankshaft.

At 06:09 AM 12/1/2003 -0500, Ameer Antar wrote:
>I'm not sure why I bother, but shouldn't the torque actually be a lot more 
>than that? If you use the tool and you're putting 258 ft-lbs on the 
>t-wrench, then for simplifiying the numbers you can assume the t-wrench is 
>exactly 1-foot and you're putting 258 lbs at the end of it. (You could make 
>the t-wrench 30 inches, but it's the same thing, you just need a different 
>weight to match the 158 ft-lbs). So then you are also adding another foot of 
>extension, so the new torque should be something like 258 lbs * 2 ft = 516 
>ft-lbs. Torque is simply the weight applied to the bar or wrench times the 
>distance from the bolt center to the point where you apply the weight. I 
>doubt you'd need to torque it that high to be safe, but it seems like that's 
>what Audi wanted you to do. 
>