Pinion Angle?

[High Roller]

Ok lets hear your thoughts. Make sure to include the trans to d/s angle as part of the scenario. I am arguing with myself as to where it should be and I am thinking it is going to drive me to modify my engine/trans mounting to obtain the correct angles at both ends.:think:

[fonz]

What r they at now?

[fonz]

4 link or lddr bar?

[High Roller]

4 link....I need to recheck b4 I actually post cuz it dont make sense to me as far as what I think I measured....lol.

[High Roller]

ok...this will not work out right. Here is what I have. :think::think:

Beginning at the trans and working back:
In relationship to the driveshaft my trans is pointing down by 5.5 degrees.

Going from pinion and working to front:
The pinion is pointing down by 3 degrees in relationship to d/s.

Basically in relations to d/s BOTH attachments are pointing down (not complementary, they are compound).

In my engineering experience you wan them complementary so that opposite sides are accelrating on at same rates.

I dont see a way to fix this without remounting engine to raise the tailshaft. If I try to get the pinion and yoke parrallel then the angle on the yoke wil be ridiculously high, and ill have positive pinion angle. Engine is in stock location. Tomorrow I am going to calculate what the angles will be (aprox) if I tried to do that, but this aint gonna work. Its been this way forever, but I never took into account the yoke angle.

WTF do I do. If I reduce the pinion angle, the yoke angle goes up, and supposeldy it is already outside the threshold of the u-joints. Yes the big ones are in it.

I think ill try to take the pinion down to 1-2 and leave it. :mad: Or I can increase the pinion angle to reduce yok angle, but they still will not be on opposing sides.

I guess if I lower the $^%& out of the car so exhaust will get drug off AGAIN I can get it back close.

[High Roller]

I have read and read....I have a few options,

lower the front of the engine.....not
rasie the tailshaft....which requires complete remount of the engine/trans
go to a shorter tire to effectively lower the axle c/l so I can work the angles out
or just change it to the 1 degree and let everything else ride.



So basically the only question that can be answered here is how important is it to have negative angle versus positive. Does it HAVE to have negative? If i can go positive then I can work the angles out.