Hi Guys I know this topic has been covered heaps but can anyone clear up my dilemma? I have my roadster ch***is done and radius rods installed, ladder bars fabbed etc and my inspector came over for a look prior to the 1st inspection (rolling ch***is). He said it looked OK and asked if I'd sorted the pinion angle out. I said I had about 3-5 degrees with the diff angle running uphill to meet the gearbox. HOWEVER He reckons angle s work best when the diff is pointed down 3 deg and the g'box output shaft also down 3deg He said that under acceleration the diff kicks up and will meet the output shaft angle and forms a neutral position. (i hope I got that right). Can anyone put me on the right track? Steve
the ****** output flange(or shaft or whatever) needs to be parrallel with the pinion. That is what is important. So if yer ****** is angled down a bit, get that angle offa the shaft or flange and match yer pinion to that.
I totally agree with Crow, as that is the way I set mine up and I have not had any vibration problems at all. The important part is to be parallel or less than 3 degrees difference.
Think parallel NON INTERSECTING LINES. What the inspector told you is also a way to do it, but for the average car, Crow is right.
http://www.iedls.com/guide.html (Powertrain Set-up Guide) Go to this link. It lays it out, easy to understand with pictures and drawings. Get one of those Degree finders form Habor Frieght for $6. Well worth it.
I don't think with ladder bars your rear will "kick up" like he thinks it will. If it does, your joints are too loose. One point to remember in setting up a driveline is to have about 2 degrees in the joints at most all times to work the joints. It keeps them from wearing in one point prematurely. I think it's called brinnelling or something.
For a STREET DRIVEN car, you want the engine and rear set at the same angle. If you were looking at your car from the side, the ****** should look like it is pointed down 3° (typical) and the rear should be pointed up 3° (typical). Make sure those two figures are equal. Most driveshafts can tolerate up to 7° of angularity, meaning that at its extremes it can run 10° downhill or 4° uphill. These are not hard and fast rules. Look under a lifted 4x4 if you want to see them being violated. Ed PS- That post about your U-Joints being at a slight angle is 100% correct. If they are at 0°, they will wear out quickly.
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