Land Cruiser de-evolution

Gravy

Ant Anstead of Dirtbikes
Supporting Member

I Lean

Mbryson's hairdresser
Vendor
Location
Utah
Driving it in 4WD wasn't as wonderful as I was hoping. Despite the center differential relieving drivetrain bind, the front axle U-joints are pretty noticeable, especially accelerating around a corner. That could be cured by using axleshafts with a CV joint in it--RCV or similar. Those are a BUNCH of money...and combine that with the little driveline vibration I have, made the next choice easy. The driveline vibration is because I totally nailed the pinion angle when assembling the axle. It's perfectly wrong for both a standard U-joint shaft, as well as wrong for a double cardan driveshaft. :(

So, part-time 4WD here we come! @cruiseroutfit had the kit in stock for me, which I picked up yesterday at the BBQ. Here it is after I pressed the bearing onto it:



Installation is pretty simple--basically, take the back half the transfer case apart to access the center diff. Replace the rear half of the differential with this spool. Reassemble. This pic is as far as it gets disassembled...ready to start putting it back together.



Here it is with the spool bolted on, ready to put the case parts back:



All buttoned up. I'll give it overnight for the silicone to cure before filling with oil and getting it back on the road. :cool:



Now, the former Center Diff Lock button on the dash will engage front-wheel-drive instead. Hubs are easy on this axle--for now I have the stock Ford locking hubs on it, but they're pretty ugly so I'll replace them soon.
 

nnnnnate

Well-Known Member
Supporting Member
Location
WVC, UT
Does that do the same thing for us without neat front axles in our 100's? i.e. 4wd to 2wd for city driving?
 

I Lean

Mbryson's hairdresser
Vendor
Location
Utah
Does that do the same thing for us without neat front axles in our 100's? i.e. 4wd to 2wd for city driving?

As @bryson said, you need to install locking hubs in place of the drive flanges. There is some discussion on Mud about it... I think AVM is currently the only option for hubs. @cruiseroutfit is working on a way to use Aisin hubs, but that's still a long way off I suspect.

Very nice kit upgrade. I'm curious if that will affect your mpg any.

It will not. I've been 2WD since the SAS due to no front axle shafts. :)
 

Greg

Make RME Rockcrawling Again!
Admin
I know on the 80 Series, swapping to part time at the t-case and adding hubs doesn't really gain any additional MPG. I looked into it at one point, but the cost didn't justify the gains.
 

cruiseroutfit

Cruizah!
Moderator
Vendor
Location
Sandy, Ut
As @bryson said, you need to install locking hubs in place of the drive flanges. There is some discussion on Mud about it... I think AVM is currently the only option for hubs. @cruiseroutfit is working on a way to use Aisin hubs, but that's still a long way off I suspect.



It will not. I've been 2WD since the SAS due to no front axle shafts. :)


I have the parts to do AISIN's on the IFS here today :D

Sadly it requires replacement of the CV axles but if you need new CV's it's a great and affordable option.
 

cruiseroutfit

Cruizah!
Moderator
Vendor
Location
Sandy, Ut
I know on the 80 Series, swapping to part time at the t-case and adding hubs doesn't really gain any additional MPG. I looked into it at one point, but the cost didn't justify the gains.

Like anything, mileage may vary (pun intended). We don't sell the PT kits with any advertised effect on mileage but customer do report gains and historically so have many online. That said there are some who did it and claim no gains. For me, it's a way to reduce from driveshaft, birf and CV wear, offers ability to drive home with broken front bits and I like the way they drive.
 

Greg

Make RME Rockcrawling Again!
Admin
Like anything, mileage may vary (pun intended). We don't sell the PT kits with any advertised effect on mileage but customer do report gains and historically so have many online. That said there are some who did it and claim no gains. For me, it's a way to reduce from driveshaft, birf and CV wear, offers ability to drive home with broken front bits and I like the way they drive.

I could see the reduced wear & tear on front-end components, that just makes sense! I was looking into it years ago and the consensus on Mud was similar to what you've found. It seems like if you wanted part-time 4WD only for a gain in mileage, you'd be disappointed.
 

I Lean

Mbryson's hairdresser
Vendor
Location
Utah
Since it has actual functioning 4WD now, I should probably make the ARB actually lock and stuff. ;)

This looks like a nice spot to place the compressor.



Little bracket that bolts into 3 existing holes in the fender.



What you can't see easily, is that the 3 mounting points are not only 3 different heights, they're also 3 different angles. :( I'm not sure if that's original, or still a leftover from the wreck.



Either way, it all works in the end. Compressor is mounted and partially wired...ran out of time to complete the in-dash wiring, that will have to come next time.

 
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