So your engine/transmission is -3.2 degrees down. You would want your pinion +1.2 degrees up. The concept is the engine downward angle will match the pinion upper angle at WOT. So +1.2+2.0=+3.2 or how most explain it 3.2-2.0=1.2. What most don't explain well, is that 1.2 is positive not negative. UMI has a great video on this. Also use the TREMEC Tool box app on your phone, for the driveline angle finder. Between the two, I fixed my vibrations. Due to me have a 4L80, my transmission needed to be jacked up to the max. Once I did that then the Tremec app gave me three greens for angles.
For 2*. It would be +1.65. Perfect balance is +3.65 for equal load on the driveshaft at WOT (wide open throttle). So non-WOT would be the -2 so +1.65. UMI has a great video. I need to re-shoot mine.
If you are going for the 2.0 degree. Then Yes, set it at .8 up. That way under acceleration the nose of the rear/suspension will pick up the 2.0. And you will have a 2.8 over and under 2.8. Making it equal load
The whole idea. Is having equal load on the driveshaft at both ends of the driveshaft at wide open throttle. The 2* is the guidance, because that is what the pinion is estimated to shift up. In your example, I would set it at -2*. The theory is at WOT the nose of the rear end would raise and be at 0*. Which would be equal a load.
There is a different method if using driveshaft angle. Which for a street car, I believe is smoother/quieter on steady cruise. Download the TREMEC app. I used it and it got me a little better on drive quality
So your math is -1.8 + 2.0 yields 0.2 so rear is set at an angle of 0.2 nose up In this UMI video, the math is -2.45 + 2.0 = -0.45 Why is UMI then setting the rear 0.45 nose up instead of down when the math calls for -0.45 and not +0.45? EDIT: I can see how 2.45 down and 0.45 up results in a 2 deg split, but the math throws it off. We cannot simply add a +2 to the angle on the crank bolt and assume a negative number means down, we need to look at by the actual angle obtained on the crank bolt and ensure it’s a 2 deg split taking angle direction into account. Now I got it. I see why you wrote the math the way you did rather than simply add 2.0 to the number. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Rvh1rkCO9w8.html
@@RocketGarageServiceSo, is. the +0.2* the correct setting? My 02 Ws6 is reading 1.8* sloping down just like your car. So going by what you said, I want +0.2 going up. Correct?
