Regear 100 Series

ShottsCruisers

Explorer
Doron....I know you are more than capable of doing the work. Have you looked into the expense of shipping your parts to Slee and having hime slap it all together and ship it back?
 

Cruiser99

New member
Thanks for the put. I have been talking to him for a while now and got some ideas from him. He has been very helpfull.

BTW setting up a gear cutter for a 1-2 gear set will cost you like a nice used cruiser. not to mentiuon the heat treatment and such. Been there.

calamaridog said:
Doron,

Sorry I forgot to subscribe to this thread.

Contact Dan (spressomon) from the 100 series forum at Mud. Dan just did this and it was a PIA but he has good feedback. I know he is working on a write-up and may be done and ready to post it?

I would love to regear to 4.88 someday but I will not do this until I need tires in a couple years. I plan on having gears cut and will not go this hybrid route personally.
 

Cruiser99

New member
Shipping both of these boat anchors became a show stopper for me. The mod is a no brainer. As a matter of fact, I would hardly call it a mod. Once you see it, the rear of the 80 and 100 is almost identical.

Besides I enjoy working on it and learning the truck. You never know when I'll need to put this experiance to practice. I'ts not my DD and I am not in a hurry.

ShottsCruisers said:
Doron....I know you are more than capable of doing the work. Have you looked into the expense of shipping your parts to Slee and having hime slap it all together and ship it back?
 

calamaridog

Expedition Leader
Cruiser99 said:
Thanks for the put. I have been talking to him for a while now and got some ideas from him. He has been very helpfull.

BTW setting up a gear cutter for a 1-2 gear set will cost you like a nice used cruiser. not to mentiuon the heat treatment and such. Been there.


I haven't priced this yet, but I have some contacts left over from when my family had a machine shop. I think I can make it happen if I order 10-20 sets.

Not planning on doing new (bigger) tires for another 25k so this won't be for a while.
 

Brian894x4

Explorer
Interesting pics on the diffs. I've never seen either of the 100 diffs in person, so that was interesting. I assume the front IFS diff is a Toyota 8" ring gear, looks a two pinion. Seems like gears for that would be relatively easy to find? Unless there's something special about them.

If I understand correctly, the rear of the 100s are unique diffs that are humongo 9.5 inchers that are even bigger than the 80 series rears? Is that why the problem finding gears?
 

calamaridog

Expedition Leader
The front 8" r&p is the same as the 80 series. The rear is a little different.

The 2 pinion design was for 98-99 and the 00+ is a 4 pinion.
 

Cruiser99

New member
Brian894x4 said:
I assume the front IFS diff is a Toyota 8" ring gear, looks a two pinion. Seems like gears for that would be relatively easy to find? Unless there's something special about them.

If I understand correctly, the rear of the 100s are unique diffs that are humongo 9.5 inchers that are even bigger than the 80 series rears? Is that why the problem finding gears?

Yes on the first one. Same R&P as 8" Toyota (Land Cruiser or otherwise)

In the rear the R&P are the same size as the 80 but the ring is mounted with bolts (no nuts) from the back into tapped holes - like the front. The 80 uses trough holes in the ring and is mounted to the carrier with bolts and nuts. This is why you change to a 80 carrier when you want to re-gear the back diff. which enables you to use the 80 R&P - readily available.

The trick is that since the 100 axles are larger then the 80, you need to use the original carrier cap from the 100 onto the 80 carrier. otherwise the axle will not go through when you close everything up.

Also, the carrier bearings of a locked diff are larger the a non-locked one. Don't ask me how I found out.:( :(

If you need more details, let me know.

Doron.
 

Snook

New member
I should more details once i pick up my 2000 100 series tomorrow from Sean at RiverCity Diffrential. The parts he need is a long list!

He started last Thursday to install ARB lockers and regears, only to find out that one of the three ARB locker he ordered correctly arrived with wrong model number, costing us two days.

Cheers,
 

Scott Brady

Founder
Very cool Jay. I know these 100's are going to come alive with those gears.

5.29's made all of the difference for my truck
 

Cruiser99

New member
Front is done.

Used a diff lock switch from the 80 to activate the ARB valve. Also, installed a pressure switch down stream of it to activate the stock front diff lock indicator so now I have 3 indicators lit when the truck is fully locked.

While I was in the instrument cluster I also found that it has an indicator for a rear tire carrier ajar so I hocked it up using a door courtesy light switch. Hope it'll prevent me driving around with the carrier open.
 

hoser

Explorer
Cruiser99 said:
Also, installed a pressure switch down stream of it to activate the stock front diff lock indicator so now I have 3 indicators lit when the truck is fully locked.
Nice, I was hoping to get the diff lock lights to light up on my LX but looking at the wiring diagrams to the instrument cluster, I could only find the CDL light, no lights for a front nor rear locker. I'll have to look at it again more closely.
 

Cruiser99

New member
I am done, John.

Sweet! Everything is back to normal - rpm, power ...

Played with the lockers yesterday. Actualy got the truck stuck in an of cambered deep rutt when the CDL and RDL were locked. Both rear wheels were spinning and the truck wasn't going anywhere, just slided sideway, digging itself deeper. Locked the front and it craweld up. Stange feeling.

If it wasn't for the FDL, it would have been winch time.

Also, it's nice to see all 3 diif lock indicators light up in the instrument cluster.
 

ShottsCruisers

Explorer
Cruiser99 said:
I am done, John.

Sweet! Everything is back to normal - rpm, power ...

Played with the lockers yesterday. Actualy got the truck stuck in an of cambered deep rutt when the CDL and RDL were locked. Both rear wheels were spinning and the truck wasn't going anywhere, just slided sideway, digging itself deeper. Locked the front and it craweld up. Stange feeling.

If it wasn't for the FDL, it would have been winch time.

Also, it's nice to see all 3 diif lock indicators light up in the instrument cluster.

Excellent! Excellent! :clapsmile :clapsmile :clapsmile

OK, how much do you charge to do mine? :D
 

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