Back in November we were trying to get to the top of Calispel Peak just north of Chewelah, WA. (The first photo of this thread is of that particular day.) I'm not known for being heavy footed in technical situations, and I've been on this trail many times, however, I found the Achilles Heal of our 100 Series. As I was working through a section I had a bit of wheel spin and ended up catching a bit of granite boulder. Bang! Followed by a lot of other bangs. We got home only by the assistance of the Center-Locking-Diff.
As I'm sure most of us 100 owners know, this front differential is the expendable crewmen, specifically the carrier. I have since learned that 100 Series 'Grocery Getters' are known to bust out their front teeth going from slick to dry pavement under mild throttle in parking lots. I don't feel so guilty now.
After about 3 weeks of a very aggressive searching for parts I nearly gave up. I had looked into everything from used axles with mystery miles that were 3000 miles away, to all new Toyota OEM. No one had a ring and pinion, or carrier save Toyota. My understanding is that the reason for the weak link is that the case allows for the carrier to shift under torque and...
To keep the story for getting longer, I called
Just Differentials/Nitro Gears and ended up speaking with Dean. He talked to me for nearly an hour about issues and modifications to the 100's. Very nice and knowledgeable guy. Though they make a stock ratio ring and pinion gear set for the 100's front, they were on back order for another few months. He tried very hard to help me find a set bug to no avail. If i had wanted to gear down the had plenty of those sets in stock.
Dean also pointed out that the 80's and 100's share the same rin and pinion set - But still no current availability. (I need to check and see if they are now in stock.)
Dean gave me the number of
East Coast Gear Supply. I called them and the gentlemen I spoke with, I wish I could remember his name, told me that they had saved a good donor from a re-geared 100 for some deserving individual. I told him I might just be that individual, could he please ship it to me? I had it on my door step the next day.
I called Dean back and asked him to sell me a good install kit, which he did, and saved me a lot of time by catching fact that the new-used gears were out of a newer 100 with a higher spline count. Excellent quality parts!
I then ordered an ARB locker from another company, I'd like to share their info but they did not excel in customer service, so I will just recommend the two above companies plus the following.
My (adopted) Uncle Jeff, who builds very competitive (including some of his own) hot-rods, mud and sand trucks, and jeeps, also owns Suncrest Autoparts (509.467.4177) in Nine Mile Falls, WA. He builds and rebuilds axles as a specialty on the side for offroaders and did an awesome job installing the whole kit. "Perfect Pattern". This is the third axle he has built up for me.
From their I just did the easy part, reinstall the bits and pieces.
The ARB switches fit by popping out the plugs and miner modifications to the back of the panel. ARB might have planned this.
Start to finish our Cruiser was up on the stands for about 4.5 weeks. I never punched all the numbers but I believe that by installing an ARB vs factory carrier, the price was a wash. The increase in strength however, is a no contest. Win/Win for us.
All told I would say I have about $2300 for just parts including the compressor and fittings.
I put the switches, and a pump I had bought several years ago but never installed, in the next weekend and have had no issues. I am not finished with plumbing the front locker poly line. I dislike cutting lines and hoses too short and I will wait until I have built and installed my second battery and mount before I cut the line and clamp it down. I also took the time to extend the front breather and will be doing the same with the center-differential and rear before terminating them in into a filtered breather. I have contemplated tapping them into the air box post filter, but I am not quite sure if their could be issues with the intake suction creating too much of a vacuum. Experiences? Thoughts?
We had a chance to put the Double-Barreled | Locker and Locker to the test yesterday on dry, wet, and soft deep sand, including pulling out a very buried American made 4x4. My initial impressions are that it will be opening up a lot of new adventures for us, not to mention peace of mind. My rear locked or limited-slip vehicles have been very practical and capable, but I have never owned one that was fully locked.
I believe in giving credit where credit is due, so thanks to the suppliers and individuals who assisted me with this repair/upgrade.
Cheers!