How do you measure pinion angle.......is there a tool or a way to measure it. And once you measure it what is good and what is bad.

--Joe

 

Hell of I know , I got a gu rue at work that says it gets better if you lower the rear which in turn lets you launch Harder and supposedly corner better.Sounds good, so I ordered JDM 2" lowering shackles and we shall see. For around $60 a set its not a big hit to the wallet.

 

I have the drop shackles so that is good to hear. But I was just wondering how to measure the pinion angle, guess I just want more knowledge or something.

--Joe

 

I have measured it like this:

Measure from the ground to the bottom of the driveshaft just after the transmission side U-joint. Record that number. Mark the shaft or the ground in the place you took the first number.

Then take the same measurement on the other end of the driveshaft just inside the differential end U-joint. Record that number. Mark the shaft or the ground in the second measurement place.

Now measure the distance from the first mark to the second mark.

If you have an Ace hardware pocket ref. book, or a Carr Lane book, or a machinists handbook you can simply divide the first measurement # by the length between the two marks. This will give you the tangent of the angle. Look up the number you got in the tangent column of numbers then go across to find the angle in degrees and minutes.
If you want, just e-mail me the measurment numbers you get and I'll look it up and send it back to you. Wrongdayj@aol.com

This technique assumes that the driveshaft angle and the differential angle are the same. They should be pretty close to each other anglewise.

Later,

 

try this... http://www.kellnet.com/chambers/tech...Pinion%20Angle

Its a Mustang site, but explains it perfectly for anyone to understand, with PICS Enjoy.......or something

 

Joe,

Snap-On part # YA328A. Price $ 21.95. It's basically a dial with a magnetic base. Handy tool

 

Stock plus 3-degree negative works well
2in Shackels and 2-degree neagative works well
Bell Tech 3/4 kit and 5-degree negative works well


These are what I have used. You can get shims for your rear to change it around......