Trail and Street Coil over 40,

[Bednar]

I'm working on the same style truck right now.
There is a project over on pirate
http://www.pirate4x4.com/forum/toyota-land-cruiser/977913-way-too-slow-fj40-build.html
He did a great job handling the steering and hydro assist.

 

[Letsgomoreplaces]

The 98+ type gearsets are much stronger. The 9.5 diffs are very strong, especially in a linked setup. Most of the pinion failures you hear about are on old 40 series sprung over with wicked axle wrap, worn out diffs and old course pinion gearsets.

When we built the BJ73 I wanted to make sure it was daily drivable. We're running 3 link w/ panhard front and double triangulated rear 4 link. 12" coilovers w 300/200 rear and 300/150 front. 4" bumps Gen right JK rear sway bar.,
We did UA this year in it and this summer i've racked up 8000 miles on it, drive it every day 50 miles round trip. Drives better than stock for sure. Still need to do some tuning with the valving, and I'd like to find a way to fit a front swaybar.

Interesting build. I am pretty much running sort of same axles. I have acquired a hybrid FJ62 Front with Hellfire knuckles and a Full Floating 80 rear. I am going back and forth with the Math on the new platform, and really thinking stepping up to TSL SX2 42" on a 109 WB , but a little erie with the 9.5 R&P. I have the diffs allready built, and one of the reasons not going one tons, and they weight disadvantages.

Is there any strength difference (pinion wise) from a 100 series third to 80 or 60's?

 

[yOHda]

My 40 that Im working on...

Very simple 3 link up front with 14" C/O. 150/200 springs. Leafs rear. RuffStuff 9.5 front/ FF 80 rear. Fairly soft, but with the extra wheelbase/width it drives pretty decent down the road. Id like to 4 link the rear this winter. Probably run swaybars after that.

 

[Twisty]

She is an art of beauty, nice work.
Like you said, its very much what I want to build. It looks like you extended the frame by the rear arch, and exactly on my plans. What type of steering box you ended with the rig? are you planing on Hydro assist?. I want to cut the frame shorter in front to expose the axle a bit more.

Daniel

Thanks

Its running a 80 series landcruiser steering box. Not plans for hydro assist at the moment, but possibly down the track if I step up to 37s.

I've left the frame stock up front for now, but I will shorten it if possible once I do the front bumper with winch mount.