Transfer case re gear

nuclearlemon

Hard Core 4+
Joined
Aug 23, 2005
Messages
7,153
Location
windy wyo
not yet. have the gears, just never got around to it. may try to get it done on the carcass before i get the body put on.
 
Joined
Sep 7, 2016
Messages
403
Location
Denver
I've read a few threads on 'Mud about using Sumo gears from Cruiser Outfitters. There might be some additional info there.

Post up if you do it!
 

Corbet

Moderator
Staff member
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Oct 24, 2006
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Durango, Colorado
Not yet but want to.
 

LARGEONE

Rising Sun Member
Joined
Jun 12, 2007
Messages
2,464
Location
Broomfield, CO
Not yet but want to.

Would be sweet! Torque converter does a pretty good job, but there are times where I wished I was lower....especially after following Isaac on Holy Cross and watching his "doubler" in his Runner just crawl over everything.
 

ttubb

Hard Core 4+
Joined
Aug 5, 2007
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610
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Crested Butte/Tucson
I have had them on my 95 FZJ-80 for several years now. I also have the part time kit which is a natural while doing the low range gears.

I had Slee do the conversion. Could not be happier. Also Land Cruiser Phil here in Az did the conversion and is happy with it.

I have attached a report I wrote on the installation and picture of the hub.

Terry
 

Attachments

  • PT Hub 1.JPG
    PT Hub 1.JPG
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  • 1995 FZJ gear.docx
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ttubb

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Aug 5, 2007
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610
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Crested Butte/Tucson
Report on low-range gears and part-time kit

Report on Installation of Marks Part Time Kit and Marlin’s Low Range Gear Set on 1995 FZJ-80

I have a 1995 FZJ-80 with 167000 miles. Tires are 35 inch with stock gearing at 4:10. Speedometer is uncorrected and reads approx 10% slow due to larger tires. Both diffs have ARB Air Lockers installed. Center Diff Lock Switch had been previously installed (required for P/T Kit installation).

Installation was completed in one day by Slee Off Road in Golden, Co. Since the transfer case was out, we elected to install all new seals and bearings, completing the overhaul.
Prior to installation, I engaged low range and locked the trans in low to determine the speed at 3000 rpm. Speedo indicated 10mph at 3000 rpm. The following are the readings after Low Range install:
1st - 3000 rpm – 7mph
2nd – 3000 rpm – 14mph
3rd – 3000 rpm – 21mph
4th – 3000 rpm – 28mph

My 4:10 gears indicate 56mph at 2000 rpm on highway driving (GPS indicates 62.2mph)

Impressions –
Part Time Kit – The truck steers easier in 2wd and seems to accelerate more quickly. I suspect the milage will improve somewhat, but that mainly depends on my driving habits.
Low Range Gears – Much improved crawl capability with 4:10 gears.

I had been thinking of going to 4:88 gears, however I like the ability to go 75 mph at approx 2500 rpm with the 4:10s. For hills I can just drop down a gear and it is about what 4:88s gearing would be. My real reason to regear was for better low range (crawl) performance and this new gearset addressed the problem at much less cost. Just my preference.

I hope this helps any one thinking of doing either of these mods. Obviously, doing both while the transfer is apart is the way to go.

One more note, I cannot say enough about Christo Slee’s operation. Ben, Amory and the best tech, Joe are top notch. Good fair prices and excellent service, done right the first time!
 

cruiseroutfit

Wasatch Cruisers
Cruise Moab Committee
Joined
Aug 1, 2006
Messages
591
Location
Sandy, UT
I've read a few threads on 'Mud about using Sumo gears from Cruiser Outfitters. There might be some additional info there.

Post up if you do it!

The Japanese made Sumo Gears have been a great option for our customers

80/100 High Range 10% Overdrive Gear Set - 8x/100 Series Land Cruisers
Fits 1/1990-1/1998 8x Series/LX450 and 98-07 100 Series Land Cruisers/LX470. Fits factory full-time (HF2A/HF2AV) transfer cases found in US Spec and global market Land Cruisers. These gears offer a 10% overdrive in high range, equivalent to converting axle gears from the 4.10 to 3.70 gears without having to do ring & pinion work.
Part# TCG9007ODHR - $505.00

80/100 High Range 10% Underdrive Gear Set - 8x/100 Series Land Cruisers
Fits 1/1990-1/1998 8x Series/LX450 and 98-07 100 Series Land Cruisers/LX470. Fits factory full-time (HF2A/HF2AV) transfer cases found in US Spec and global market Land Cruisers. These gears offer a 10% underdrive in high range, equivalent to converting axle gears from the 4.10 to 4.56 gears without having to do ring & pinion work.
Part# TCG9007UDHR - $505.00

80/100 3.1:1 Low Range Reduction Gear Set - 8x/100 Series Land Cruisers
Fits 1/1990-1/1998 8x Series/LX450 and 98-07 100 Series Land Cruisers/LX470. Fits both factory part-time (H1FA) and full-time (HF2A/HF2AV) transfer cases found in US Spec and global market Land Cruisers. Includes both low speed output gear and idler gear. Minor case clearancing is required using a die-grinder, otherwise these are a direct fit to your 80/100 Series transfer case. Factory ratio is 2.49:1, these 3.1:1 gears offer a 25% low range reduction with no change to the 1:1 high range. Made in Japan to OE Toyota specifications.
Part# TCG900731 - $725.00


We offer both low-range reduction as well as high-range underdrive (reduction) and overdrive. Basically with the 10% under drive you get the same feeling as going from 4.10's to 4.56's :cool:

IMG_3589.jpg


Check out these gear options:

IMG_3573.JPG


I have a bunch more info on Mud here:
https://forum.ih8mud.com/threads/ywst-low-range-t-case-gear-sets-for-the-1980-2007-cruisers.972820/

And on our website:
http://www.cruiseroutfitters.com/engineparts.html
 

RayRay27

Cruise Moab Committee
Cruise Moab Committee
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Jun 26, 2015
Messages
974
Location
Thornton CO
I currently have 4.88s with the P-time kit and low range 3:1 in the T case. It's a really awesome set up for me. Slee did my install. The slow crawling ability is great especially when you have a close to 6000# rig. I usually put the trans in L when wheeling and the truck barely moves. It's really great when going down steep declines, no braking needed most of the time.
 

ccslider

Hard Core 4+
Joined
Apr 20, 2015
Messages
1,048
Location
Westminster
I just bought the underdrive high range gears and the low range gear. The ud gear plus a few seals was 565 and the low range gear I bought a trail gear one for 365 or something.

When you switch to the underdrive high range it will be the same things as changing the diff gears to 4.56 plus it gives you more low range reduction. I'll be excited to see how the 4.56 feels with the supercharger, I think that will be the perfect setup.

There are very detailed videos on YouTube about replacing. It all looked really easy. Im going to rebuild a spare transfer case and then just swap it in.

Im now thinking that I should do the part time kit at the same time. "Since im in there" always gets me.
 

Basaltfj40

Trail Ready
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Jul 21, 2017
Messages
364
Location
Basalt
Awesome great info thank you
 

cruiseroutfit

Wasatch Cruisers
Cruise Moab Committee
Joined
Aug 1, 2006
Messages
591
Location
Sandy, UT
Awesome great info thank you

Happy to contribute. We've got all of the gear options in stock as well as the t-case bearing/seal kits. Let me know if we can help, we can always work a combo deal for a RS member :cool:
 

Basaltfj40

Trail Ready
Joined
Jul 21, 2017
Messages
364
Location
Basalt
Ok great! Thank you I hope to be pulling the trigger w the next pay check.
 

damon

Cruise Moab Committee
Cruise Moab Committee
Joined
Nov 28, 2018
Messages
241
Location
Lakewood, CO
Happy to contribute. We've got all of the gear options in stock as well as the t-case bearing/seal kits. Let me know if we can help, we can always work a combo deal for a RS member :cool:
@cruiseroutfit Tell me more about this combo deal. 😬
 
Last edited:

jps8460

Cruise Moab Committee
Cruise Moab Committee
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Feb 15, 2013
Messages
2,375
Location
Broomfield
Do these transfer case gears require a break in period like Diff gears? If so what is the recommendation?

I did a fluid dump at 500 miles. It was spotless. I did both high and low range gears.
 

Pz10420

Lifted
Joined
Jun 21, 2020
Messages
101
I just did the high range underdrive in my 93 about 500 hundred miles ago and I am planning on doing a fluid change just to make sure there is nothing of concern. It was a good Saturday job and hopefully I'll be able to pull my pop up over monarch pass in high range this year. haha
 

Oneops

Wincher
Joined
May 12, 2021
Messages
84
Planning to do this soon. I keep going back and forth on the part time though.
Could one run the part time spool and just run locked in high and do the axles and hubs later?
Is going back in to do the part time a pita?
I read through some mud threads a few months ago on doing the ud gears and thought there was a bearing you have to press on and off and I believe you could have it come with a new one pressed on anybody here diy this?
 

Pz10420

Lifted
Joined
Jun 21, 2020
Messages
101
I did the UD high range gears around xmas. I did need to use my press for one of the bearings and a large puller to remove something(cant remember if it was a bearing or a gear). You can borrow the needed tools if you feel like driving down to Monument to get and return them. I just watched the Otramm youtube video of it before hand and used it while I was doing the swap and it made the process pretty easy as long as you have the right tools.
 
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