Seems like the 90 and 180 degrees thing would have an awful lot of variance, depending on the person doing the twisting. I have an employee with such unusual wrist/finger/hand strength who could easily twist those around a full turn or more. Meanwhile, I find it rather difficult....

 

I just finished replacing TB/BB/WP. I hear a whine and the engine sounds like a sewing machine. I'm thinking that the BB may be too tight. Agreed?

Dan
1983 944

 

yes.
BS belt should be barely audible when properly tight.

 

even when cold?

 

Yes, should be only a very faint whine.
you shouldn't be able to hear it inside the car.

 

I've had pretty good luck with a combination of the 180 twist method and a kriket ($10 on Amazon) tool. The kriket only reads down to 30 lbs and the spec is 28 lbs, but it always works that when I give the belt a 180 twist then check it with the kriket, the gauge reads just under 30 lbs. I don't have really strong hands but do spend a lot of time wrenching on cars so even though I'm a little arthritic I'm not crippled.