Just bought a 4speed/ranger setup and I have a few questions...

[msapers]

I am in the process of buying a 1975 Toyota 4 speed, Ranger torque splitter and 4 speed T case from a Mud member.

These will be used to replace my factory three speed in my 72 FJ40.

I am running a mild 350 and drive my truck approximately 150 miles per day. It's used for weekend 'wheeling and camping with a small utility trailer also. Although I do tend to play in the mud and climb some fairly steep hills, this is NOT a rock crawler. The truck has 4.11's and 33's.

For more on my rig, see my thread here: https://forum.ih8mud.com/40-55-series-tech/254686-my-72-fj40-how-i-came-back-cruisers.html

My questions are:

1. What are the advantages/disadvantages of running the 4 speed t case vs the three speed case other than the three speed having a lower low range?

2. Other than making sure that the trans, ranger and 'case are in good shape, is there anything that I need to do in order to strengthen them and make them live a long happy life in my rig? If so, I'd like to do it prior to installing it in my truck. Tips and tricks are appreciated!

I will post a thread with lots of pics when the swap is complete.

Thanks,

Scott

 

[Degnol]

I'd put a T-Case Saver on it.....just in case. I would also not worry about the slightly lower gearing in the 3-speed case. Not much gain for a lot of trouble, especially in your application.
Sounds like a good setup for your needs.

Ed

 

[FF LC FREAK]

Coolerman (who does all my research for me ) posted this about 3sp and 4sp transfer cases a while back - https://forum.ih8mud.com/40-55-series-tech/239684-2f-4-speed-into-71-any-pointers.html. Scroll down to post #12 to see the crawl ratios of the different transfer cases and transmission combos.

 

[Pin_Head]

X2
Stick with the 4speed case if it is in good shape. The 15% lower low range isn't worth the trouble or expense.

 

[inkpot]

Howdy! The Ranger is pretty much bullet proof. When I bought mine 16 years ago, they were rated for 25000GVW, like a motor home or medium sized truck. They usually come as 25% overdrive, but some are 17% underdrive like mine. Splitting gears on the road is neat, I love it, as it is fully syncronized. The only real downside is even if your transmission is rebuilt/all new, the weight and resistance of the Ranger will likely make it shift heavier, like a big truck. That's not a bad thing, just different. I swapped in a rebuilt tansmission, thinking my original had some pretty worn syncos, but no difference. John

 

[msapers]

at this point, it couldn't be much worse than my 3 speed. Shifts like a big rig!

 

[inkpot]

at this point, it couldn't be much worse than my 3 speed. Shifts like a big rig!

Howdy! I really do like mine, but it is different. Enough to be noticable. Not a bad thing by any means. Some folks get frustrated because they don't realize the effect of all that weight of the additional rolling mass created by the Ranger. Really cold weather may require some double clutching until it warms up a bit. It also makes it much easier and faster to drop the tranny/transfer and replace it, as you don't have to fuse with the clutch alignment issues. John

 

[msapers]

Does all that extra weight affect transmission bearing life?