Differential Question
#1
Differential Question
Is there a way to tell a gear ratio of a stock differential with out removing it? A stamp? Number? Going to the junk yard and turning the wheels my not always be an option.
I want to pull my rear (24 spline) differential and have it rebuilt. No one i know of in town does this so i gotta send it to Utah. I'D like to grab one out of the junk yard so I'm not parked for a month while it gets rebuilt. Anything I should be looking for? Other than my locker my differential gearing is stock. My front diff (10 spline) is stock. Do RRC and Discoveries have different gear ratios for different years options etc?
I want to pull my rear (24 spline) differential and have it rebuilt. No one i know of in town does this so i gotta send it to Utah. I'D like to grab one out of the junk yard so I'm not parked for a month while it gets rebuilt. Anything I should be looking for? Other than my locker my differential gearing is stock. My front diff (10 spline) is stock. Do RRC and Discoveries have different gear ratios for different years options etc?
#2
#5
I think Ashcroft Transmissions has some good info on their website too.
#7
#8
-Dial indicator and magnetic base
-Inch/pound beam style torque wrench. This is the one I used.
Amazon.com : Park Tool TW-1 Torque Wrench (1/4- Inch Drive, 0-60 inch Lbs) : Bike Hand Tools : Sports & Outdoors
You want the beam style so you can watch what the preload is. -You'll need to make a tool to adjust the bearing cap nuts. Basically a piece of flat stock with two bolts sticking out of it.
-Some yellow gear marking compound
-Digital caliper/micrometer helps as well to keep track of shim thicknesses.
#9
You'll probably want new bearings/races for everything in there as well. Lucky8 has everything you need. Buy one shimpack from them, should be enough along with the current shims in your diffs to do two diffs.
I will say that rebuilding diffs isn't for everybody. There is a certain amount of upfront investment needed and a learning curve. For me it was worth it. I like knowing how to work on things and being able to do things myself. I know have everything I need to rebuild my diffs anytime I want.
I also went all out when I rebuilt mine. I installed Ashcroft lockers and Ashcroft 4.12 gears. I replaced all bearings/races. I replaced all the crown wheel bolts, carrier bearing bolts, and pinion bolt. I figured as long as I was in there!
I will say that rebuilding diffs isn't for everybody. There is a certain amount of upfront investment needed and a learning curve. For me it was worth it. I like knowing how to work on things and being able to do things myself. I know have everything I need to rebuild my diffs anytime I want.
I also went all out when I rebuilt mine. I installed Ashcroft lockers and Ashcroft 4.12 gears. I replaced all bearings/races. I replaced all the crown wheel bolts, carrier bearing bolts, and pinion bolt. I figured as long as I was in there!
#10
Yea it's really easy to get a case of the "might as wells". I know I don't want to change gear ratios as I still want to do a fair amount of highway driving. I like the 75 MPH RPM's where they are. I already have a Detroit locker in the rear diff so I don't have to buy that. The bearings/shims and tools seems my only major expense. Still for 50 bucks I may just stick the Jy unit in there so I can take my time. Gonna review the rave again with your simplified explaination and see if it clicks.