On my 12 bolt ring and pinion change, here are my first gear marks. How much do I tweak? Take off .005"? Thanks.

http://bry.us/2007-07-03_14-17-02.jpg

http://bry.us/2007-07-03_14-16-13.jpg

Looks pretty good. I recommend putting a drop or two of gear oil on your brush and mix it with the marking compound to thin it a little. Use an axle to turn everything and make 4 or 5 rounds in both directions to get the pattern a little more clear. You have a small burr on one of the teeth on the coast side. Notice the skip mark on 2 of the teeth. Check the edge of the teeth for a very small burr. You can remove it with a small deburring stone or knife hone.

Is this any better?

http://bry.us/2007-07-05_14-40-15.jpg

http://bry.us/2007-07-05_14-41-59.jpg

A little better. I'd go about .002 or .003 thicker on the pinion shim and try again. Only mark about 3 teeth next to each other so that there isn't so much compound on the gears. Run the gears through a few more times to wipe off a little more of it.

Okay, here's my next set. I had a hard time getting a clear defined coast pattern. If this one is good, I need to put the REAL bearing on (not the slip bearing) and have you verify that that pattern is good. Thanks for all of the help.

http://bry.us/2007-07-16_12-09-39.jpg

http://bry.us/2007-07-16_12-54-24.jpg

That one looks pretty good. Put on the other bearing and see what it looks like. You might have to make one more adjustment with the other bearing.

So I think I messed up. The first one on this thread was .031, the second one was .027 (I went the wrong direction).

Here's .033:

http://bry.us/2007-07-16_17-30-09.jpg

http://bry.us/2007-07-16_17-50-13.jpg

That's good. See how it looks with the other bearing.

After a big fiasco I am now ready with the real bearing. How's this?

http://bry.us/2007-08-06_13-09-01.jpg

http://bry.us/2007-08-06_13-25-58.jpg

That should run fine.

Bryan, is that your first ?

I did one a while back and so far so good (Thanks again Freddie).

Yes it is. A real learning experience. I think I could bust out a second one WAY quicker.

Yep. Plus I didn't use a slip fit bearing :sad: But got the pinion on 1st shot (Did a lot of measuring).
But got a 12 bolt waiting for $$$.

I have been using a super shim kit and a solid pinion spacer kit when i do ring and pinions. Makes life much easier! I just honed out a new pinion bearing for my pinion depth settings. What is the backlash on it?