nbrion1.
There is a topic about 9.25 difs on this forum by a guy called, areinike.

Do a search for him and his posts on the 9.25 1500 rear. Very worth while reading.

From memory, he especially says about having a quality side adjusting tool. So the 150 ftlb torque needed to "spread the diff case" can be attained.

The figures are from memory, but I remember how important it was to get the correct pre-load on those side adjusters.

Good luck bro and post up your results.

Al.

 

Ok, got me thinking so I had to go back and lookie at manual. I played with left side , right side adjusters until I had .004 backlash, with 10 ft lbs torque on adjusters and carrier bearing caps just snug.

I tightened carrier bearing caps to 60 ft lbs, then adjusted the right side adjuster to 75 ft lbs.

(This pushed the ring gear away from the pinion taking it out of mesh, along with preloading carrier bearings)

I still only had 5 or 6 thou backlash.

I continued increasing the torque on the right side adjuster until I had .008 backlash as recommended.

I checked left side adjuster to ensure I had 75 ft lbs torque, which I did.

Torqued carrier bearing caps to spec ( 100 ft lbs. l think)

I then installed the adjuster ring locking tabs.

 

Hollyschnikes, thats a good read. bookmarked!

I know who you are talking about. I googled this topic followed DodgeForum and found where you recommended this person, and sure enough he chimed in and answered the question. It was an old thread, but i posted on it so i guess I bumped it to the top.

I got stuck on installing some nev-r adjust trailer brakes yesterday. Thanks for the heads up. Hopefully, I'll get to it today.

 

Good luck, man! I was compenent, too but the gear change proved me otherwise. I feel compenent now, after about a half a dozen reworks - learned a hell of a lot. Still running with near 7,000 miles on them - towing and all.

 

I'm so glad you keep up with these when I'm on my hiatuses, Al!

 

Oil change, grease job, brakes cleaned up after winter.......and had her on the first maiden voyage today. So far, so good! Gotta get some miles on....gotta tow in a couple of weeks. Will post back with my opinion using this gear ratio and towing.

 

I finally got the housing and everything out and started cleaning it up. Im going to load everything up and take it my buddies. He is the mechanic for some company that has a fleet of dodge rams. Newer and older. He does all the rearends and whatever else they need. He is going to tell me what all to get and when it comes in he is going to help me get it all back together. Im pretty excited to see how its done and learn something new. Thanks. All I really need now is a good, not too expensive company to get my parts from.

 

 

Just an update to finish this thread off.

My truck

03 Ram 1500 Quad 4x4, Hemi with 20 inch wheels.
Towing about max, 7800 lb RV

After changing from 3.92 to 4.56, in general, my engine rpm's have turned out to be about the same when towing.

With the 3.92, overdrive off, I was generally running with the torque convertor unlocked. With a tail wind, or a downgrade, the convertor would lock up....but would soon disengage.

Now, when towing with 4.56, with od off, the convertor is remaining locked.

So, I am running about 3000 rpm at 100 km/h or 60 mph.

Overall, I am happy with this upgrade. I think my next mod will be adding a higher capicity differential cover with cooling fins.

 

The the TC unlocked for an extended amount of time while towing, guaranteed, worked that transmission pretty hard. You probably don't have a temp gauge on your tranny to realize that you were probably running it pretty hot (around 240+). With the TC locked or with OD off, I usually run about 180*F and this is in S. Florida heat. This gear upgrade is an all around winner in my book. Great job! You just saved your transmission at the same time!