Lt ifs time!
Okay, so I've been thinking long and hard and I'm 95% sure I'm going to make a custom long travel (or "mid travel") setup for my IFS. Like hell am I going to pay three grand for some control arms, and as I'm sure a lot of people have seen this guy (
Dual Sport 4runner - TTORA Forum) made his own for his 3rd gen. No offense to him, and he even states it, but he has no engineering experience so was just building the shit out of his gear hoping it wouldn't fail. The plan is I will design and model the new suspension and do the analysis (long hand and finite element) to be confident that the new setup will be able to handle abuse. When winter break rolls around I will already have all the plans so can get right down to building it.
I am thinking the standard 3-3.5" per wheel increase to fit Tundra/T100 axles which it sounds like yields around 12-13" of travel according to Total Chaos. The setup I build will be a direct bolt in as much as I can do, so downtime will be decreased and if something happens I can just plug stock gear back in.
I will hopefully be able to run my current shocks (5100) though might have to buy new coils to compensate for the increase lever arm. If this goes through I also plan to get Land Cruiser or similar coils for the rear that are softer, since even with all the weight in the rear my 891s bounce badly.
I want to do this because I go faster more often than I go slow; I think it looks cool; and I want a custom suspension. Around here, a lot of trails are just gravely with bumps or have occasional whoops to divert water and I want to be able to hit them faster and not worry about bottoming out. I don't plan to be jumping my rig or anything insane, just a mild travel increase to handle bumps.
I will have to get fiberglass or tube fenders, though my drivers side fender needs replacing anyways. I am slightly worried about the track increase, but I don't think it's very significant relatively, but we'll see. I can always duct tape some cardboard to my fenders and drive around and see how much 3" per side actually looks. A benefit of course of a wider track is a lower risk of rolling over, which I have issues with

Additionally, I will be able to run larger tires (though I don't plan to go over 33s ever and should be able to fit those fine now) easily since the wheels will be pushed away.
The initial steps to start this will be modeling the stock IFS and figuring out how it loads and reacts so I know the minimum to design to. My current thoughts are just building from square tubing, at least on the lower control arm and either round or square for the upper control arm.
KidV wants me to throw a 8" 3rd member in the front, but that will have to wait since this is meant to be a quick project once the welder is turned on.
And here is just a quick picture after I dinked around in SolidWorks a little bit getting a feel for things.
Tomorrow I might pull my tire and take proper measurements and lots of pictures. If anyone has any warnings or advice, please share as always and thanks for reading!