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Author Topic: Just finished regearing  (Read 1552 times)

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93yjFirstJeep

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Just finished regearing
« on: July 22, 2009, 10:52:50 PM »
So i have a 93 yj with a summit hi flow cat, but other than that, stock. Just went from the stock 4.10 gears to 4.88.  :pirate:

WOW!! 8)

Probably the most difficult project of my entire life. i had issues shimming the pinion because you actually have to press and unpress the bearings every time :brick:

And, the inner drivers side seal on my dana 30 took two hours to get seated into place  :fitz:

However, just an 11 mile drive really shows how worth it this was. I got to 80 on the interstate! :weee:

Looking forward to tracking my gas mileage, hoping it will go up from 15 with my 33x12.50 muds

Verdict: Best $400 i ever spent
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Jesse-James

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Re: Just finished regearing
« Reply #1 on: July 22, 2009, 11:16:02 PM »
Quote from: 93yjFirstJeep on July 22, 2009, 10:52:50 PM
Probably the most difficult project of my entire life. i had issues shimming the pinion because you actually have to press and unpress the bearings every time :brick:

Should be using setup bearings.
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dos0711

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Re: Just finished regearing
« Reply #2 on: July 23, 2009, 05:22:53 AM »
Wanna do it again? LOL
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93yjFirstJeep

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Re: Just finished regearing
« Reply #3 on: July 23, 2009, 08:54:58 AM »
Just a warning, it took me 3 days. the setup bearings would have been a good idea. I think you can just grind out your old bearings so they slip onto the pinion without having to be pressed. i got a really good deal from online. i went through Adam's driveshaft. I got both ring and pinions, and both bearing overhaul kits for $400
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Offline FourbangerYJ

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Re: Just finished regearing
« Reply #4 on: July 23, 2009, 09:32:57 AM »
Gearing makes a big change in how peppy it feels. Good job!
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Offline neale_rs

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Re: Just finished regearing
« Reply #5 on: July 23, 2009, 09:40:06 AM »
Always install the big tires before the gearing change.  That way you feel happy after regearing.  I regeared first and then felt a bit disappointed when the 33s went on!
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'95 YJ, 33 x 12.5 mud tires, RE 4.5 ED lift, Atlas 4 speed, rear D44, ARBs front and rear, 4.56 gears, 8000# winch

Offline sharpxmen

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Re: Just finished regearing
« Reply #6 on: July 23, 2009, 10:44:04 AM »
Quote from: 93yjFirstJeep on July 23, 2009, 08:54:58 AM
Just a warning, it took me 3 days. the setup bearings would have been a good idea. I think you can just grind out your old bearings so they slip onto the pinion without having to be pressed. i got a really good deal from online. i went through Adam's driveshaft. I got both ring and pinions, and both bearing overhaul kits for $400
what brand did you get?
didn't install mine yet, got 4.88s both front and rear from Motive gear - it came down to $145 rear, $135 front + bearings, shims and seals, around $430 or so when you add shipping. Your notes are helpful as i think i will order a set of setup bearings since i can't imagine how frustrating can be to depress the bearings a bunch of times, thanks for the tip.
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'95 YJ, NSG370 6spd / Hurst shifter, Dana 300 + 4:1 Doubler / tri-stick, Custom skid, Super D35 / Auburn LSD / 4.88, 35x12.5x15 BFG KM2, 64mm t/b, 1.7 RollerRockers, MkVIII e-fan, Dual Diaph Booster
Latest: Corbeau BajaRS heated seats :dance: keeping warm the rear end

Offline jfrabat

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Re: Just finished regearing
« Reply #7 on: July 23, 2009, 10:44:45 AM »
Quote from: neale_rs on July 23, 2009, 09:40:06 AM
Always install the big tires before the gearing change.  That way you feel happy after regearing.  I regeared first and then felt a bit disappointed when the 33s went on!

X2!!!  After 4.88 with 31's, 4.88 with 33's feels sluggish!
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'94 YJ 2.5L with 4" RE lift, Superwinch EPi9.0, FoMoCo e-Fan, SD30 and SD35 w/ARB-5.13, 165A alt., 33" BFG KM2 on 15" AR wheels, Sony sound system, Pavement Ends Hardtop, Hydroboost

93yjFirstJeep

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Re: Just finished regearing
« Reply #8 on: July 23, 2009, 03:29:51 PM »
The gears were optimum gear and the bearing kits were motive gear.
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Offline aw12345

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Re: Just finished regearing
« Reply #9 on: July 23, 2009, 05:20:54 PM »
For the pinion bearings, if you can reuse the big shim behind the pinion bearing then you add shims under the bearing race is not all that hard to knock the race out a couple of times
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Offline sharpxmen

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Re: Just finished regearing
« Reply #10 on: July 23, 2009, 06:57:51 PM »
Quote from: aw12345 on July 23, 2009, 05:20:54 PM
For the pinion bearings, if you can reuse the big shim behind the pinion bearing then you add shims under the bearing race is not all that hard to knock the race out a couple of times
can you put shims between the pinion bearing race and the diff housing on D35? if that's the case that would make it easier, but for whatever reason i thought the shims go on the pinion shaft before the bearing. that would be a relief
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'95 YJ, NSG370 6spd / Hurst shifter, Dana 300 + 4:1 Doubler / tri-stick, Custom skid, Super D35 / Auburn LSD / 4.88, 35x12.5x15 BFG KM2, 64mm t/b, 1.7 RollerRockers, MkVIII e-fan, Dual Diaph Booster
Latest: Corbeau BajaRS heated seats :dance: keeping warm the rear end

Jesse-James

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Re: Just finished regearing
« Reply #11 on: July 23, 2009, 08:09:48 PM »
I was able to borrow a set of setup bearings. Made things much easier.

It was also nice to have access to a lift.  :twofingers:
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