Just bought sure grip carrier from dr. diff and new seals , bearings , rear yoke , my was a open carrier , If i could use the ring and pinion it would save money and bought this rear end several years ago , looks alright , just want to be sure .
Oh boy.....I wish it was that easy. Let me elaborate for everyone because this might lead to some different answers, possibly. So I bought this 8.75 489 assembly (rear axle) w/3.91s for my superbee..close to 10 years ago. I put it in my garage until I needed it and my car was ready for the new rear. I expected to have to rebuild some components but here's what happened. I mistakenly thought the rear was full of gear oil and it wasn't. It sat rusting for 10 years and I didn't even know. The Suregrip was one big ball of rust...trashed. The R & P was de-rusted but appeared severely pitted so I didn't use them either. The axles were fine and they already had green bearings. I bought an entire package from Doc Diff to replace all these and new axle seals. The disassembly of the 489 revealed a shim under the pinion race; not below the gear and bearing. I looked at the etched number on the bottom of the new pinion and tried to get as close as I could with the shims in the kit. The kit also included the crush eliminator spacer. I am using it. I was able to get 20 lbs of pulling torque on the preload. There are 2 norms based on used parts and new parts...from what I can find. 20 lbs. seems like the happy medium. All of my shims in this new kit go under the bearing and not the race so I can't exactly use the original because I tweaked the edge when I was knocking out the original bearing race. I'm essentially starting from scratch. I have my in. lb. beam torque wrench, calipers, micrometer, bearing puller with cup halves and collar, and the clicker 250 ft torque wrench. I think the only tool I don't own is the pinion depth jig to calculate that measurement. Soooooo, with all of this, hopefully helpful, info...can I hear some opinions? It would be greatly appreciated. Again, even tho I've been a Mopar guy my whole life, this is the first time I've ever had to do a pumpkin on my own.
I finally used a check bearing for the shimming preload. What a PITA. Then the tooth pattern seemed shallow so I shimmed the pinion up a little more. I think I got it but I won't know for sure until I run it. That's a few months away. I appreciate the input! These definitely aren't fun!!
Damn sorry to hear..... Richmond gears for some reason are noisy! I've had good luck with motives honestly.
Check bearings are a must! The more you do the "easier" it gets.....still a process but you'll understand it a little better
