Eaton Posi

Was not trying to say it that forward...But true....

 

I wish I would have driven the 10 hours to meet you and get this done.

NOBODY, I mean NOBODY in this area knows all the details of this. It was quite discouraging to listen to numerous people, just confident enough, to want to practice on my car. Or they've been "doing it this way for years" and they have all the answers.

I haven't found too many humble mechanics in my search but I've found a lot of overconfident ones that can do it with short cuts.


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Agreed. Having never seen this, I wouldnt know right from wrong. Plus, being three hours away and your car disassembled on a hoist does not put me in a position of power to negotiate. Lol.


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I need me one of those decals... Jim did my 3.90 8.5 rear a few years ago and I have not been kind to it at all!!! The only thing I ever did was find NOS outer bearings after a new one had an issue and run the hell out of it.I wouldn't hesitate going to Monzaz again!!

 

Yea,I wasn't pointing at anyone directly,but I see it everyday.Nit only in the automotive market,but other businesses,like construction.They grab a hammer,stick a sign on their truck,and all of a sudden they are a contractor. Nope.

 

I hear ya. I see that in construction too. As for the rest end, here's a few of the guys I passed on:

Guy 1: after asking around, I found out he was accused of putting used gears in a friend's car but charged for a new set after said "friend" had to open up the rear.

Guy2: sat there and talked to me about this stripper he's in love with and how she's in jail right now but he could fix her. Lol.

Guy 3: wanted to use the old crush sleeve and some other ideas I didn't like.

Guys 4-6: just didn't feel comfortable and wanted to keep the old pinion bearings in.

I finally found a 73 year old whose been a Buick mechanic and has his own shop. 50+ years of experience. Hot rodder. He set the backlash with his ear the first time (measured shim thicknesses with calipers) and confirmed the accuracy with the dial indicator. So I hope I picked the right one. He was definitely the safest pick of them all.


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He still needs to put compound on it and run a pattern. That is what truly tells the story.

 

I am assuming he know the gear was in running when it came in so probably assumed it was a necessity ...I do too run a pattern even on a gear that was running good anyway also... JUST a better feeling for me to know there will not be any issues. Jim

 

That was his thought process. It came in running and the gears looked good along with not changing the gears and kept the same pinion depth with the old shim. Thinking back, I would have liked to have seen it too but he talked me out of it saying he's done many that way for decades and that it was unnecessary.

Time will tell.... I may have just had a real expensive education.


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As long as all the bolts are torqued and shim are snug for the carrier and pinion preload on bearing is good..... you are good to go.

 

That's a relief. We torqued all bolts down to the published specs. Same with the preload on the bearings.

I've been driving around town and it's quiet. I was told that there really isn't a break in period but that I shouldn't be hard on it for a while. Is there a recommended mileage before I can put a heavy load on it?


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You do not need any break in on used good gears. ONLY reason for some break in mileage is to be sure your rear end JOB was done correctly. SOME people like to do figure 8 for the posi etc...I think it is a waste of good clutch burn out material myself. If you have 50 miles on it HAMMER DOWN!

Jim
J D

 

Schweet!!!

Old tires are coming off Wednesday. It would be a shame to leave some good tread on them.


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