100 Series IFS Long Travel Thread (1 Viewer)

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This kind of UCA is utilizing a heim joint in the lateral position set up in a double shear configuration. Super strong and the heim joint being in that orientation removes the heim as a limiter of travel. However, with the joint in that rotation your steering angle suffers, so does the steering performance. So it’s not really good for anything but a fast desert prerunner. Also it requires a completely custom spindle (the heim joint actually sits in the spindle) so basically you only see this configuration in one-off front ends.

That makes sense. Thank you for the complete response!
 
There's not much info left on this, but it started as a 100 series LC and they re-worked the stock suspension to get 12" of travel, and then put the same upper/lower arms on the back to give the rear the same travel with the same components (minus steering). I believe new spindles were fabricated and Porsche CV's were used. Rod Millen built this for Toyota back in 2000.

Rod Hall is another guy that is taking stock H3's and getting 10-12" of travel out of stock components with coil overs.

It is possible to re-work things and gain travel, but you are limited by the CV's for the most part.
70367e74b5a4f369b529ef4aa9791971.jpg
 
Hey sorry, I'm pretty slow here.
As a general comment, the sram ratio, lower to upper seems to constrain travel.
Moving the wheel forward should provide more caster, which we all need!! I have Black Hawk Uppers and still run out with 80mm of drop with my Icon shocks. Would love a bit more.
I did get a very confused response from 555. It was probably my fault as I mentioned 100 series and the guy, although curious could not get over the fact that they only made a 35mm ball for the 100, I kept asking "what is the biggest press in ball joint you make" and the answer was the same. the largest we make for a 100 is a 35mm ball???
Anyway, the 40mm ball off the Tundra/200 is good news.
I am curious where the steering is located on the 200 spindle. I have been thinking about lifting the point to straighten the rack a bit, to stop the wear we see all the time in this area.
So next step for me is I need some steel to press the bushes into.
  • Lower I need 2 off 47mm ID tube x 61mm long, would love some heavy wall, say 5 or 6mm wall. (Sorry for the Metric you 'Merican's)
  • Upper I need 4 off 52mm ID x 46MM Long.
  • Knowledge of the 200 Lower Balljoint Dimensions.
I have toyed with using 200 spindles/unit bearings but I will loose my free wheeling hubs. It does through open a few options as there are several fabricated heavy duty spindles available for the Tundra. Steering angle will be the difference.
 
Also, I think the upper arms will hit the chassis about the same time as the upper balljoint runs out of travel.
Longer arms means more travel!!!
I just want coilovers and triple bypass shocks! With a bit more travel!!!
 
Also, I think the upper arms will hit the chassis about the same time as the upper balljoint runs out of travel.
Longer arms means more travel!!!
I just want coilovers and triple bypass shocks! With a bit more travel!!!


Bump, bump, bump.... any progress on your long travel project?? Due to this corona virus times I installed Solidworks on my home computer and working from home. I started to design a UCA to accomplish the same things as the existing aftermarket UCAs (ie Trail-Taylor, Nitro, Total Chaos, Slee, etc...). While designing it I was thinking "why not fit a coil over in the front? Replace the torsion bars? etc, etc.... Did searching and reading here for the past week on all the developments. YES, I read all the obstacles to creating this suspension but have some resources to get it done (time is another issue...). I'm not a suspension expert so I am learning (had my '99 LC since '03 and didn't raise the suspension until only 2yrs ago, but now I'm hooked :) ). I have a buddy that owns a machine shop. Another buddy is a suspension expert and can fabricate, design and weld frames as he has been restoring old classic muscle cars for the past 15yrs. He has designed mild to wild frames and if anyone can make this he can. I would love to see someone complete this project.

AS1747, here is a CONCEPT Solidworks model for a UCA This is using a single block of aluminum for the body, spherical bearing for the ball joint in a machined 4140 alloy steel bearing holder. The length of the arm can be made to whatever we need.

UCAconcept.JPG
 
Bump, bump, bump.... any progress on your long travel project?? Due to this corona virus times I installed Solidworks on my home computer and working from home. I started to design a UCA to accomplish the same things as the existing aftermarket UCAs (ie Trail-Taylor, Nitro, Total Chaos, Slee, etc...). While designing it I was thinking "why not fit a coil over in the front? Replace the torsion bars? etc, etc.... Did searching and reading here for the past week on all the developments. YES, I read all the obstacles to creating this suspension but have some resources to get it done (time is another issue...). I'm not a suspension expert so I am learning (had my '99 LC since '03 and didn't raise the suspension until only 2yrs ago, but now I'm hooked :) ). I have a buddy that owns a machine shop. Another buddy is a suspension expert and can fabricate, design and weld frames as he has been restoring old classic muscle cars for the past 15yrs. He has designed mild to wild frames and if anyone can make this he can. I would love to see someone complete this project.

AS1747, here is a CONCEPT Solidworks model for a UCA This is using a single block of aluminum for the body, spherical bearing for the ball joint in a machined 4140 alloy steel bearing holder. The length of the arm can be made to whatever we need.

View attachment 2256322

It's all a non starter until you get someone to make extended axles. The arm design is really no big deal.
 
It's all a non starter until you get someone to make extended axles. The arm design is really no big deal.

RCV can make any length shaft you need without much drama. Just have to bust out the pocket book.
 
I have to say when this thread first popped up I was also in the "what's the point" camp. More time with my cruiser and the limitations of the torsion bar system and I'm starting to get it. However, once you sink the money in to convert to a coilover the question is: should you have just bought a 200?!
 
Why can't we get a portal axle kit? My preliminary research leads me to believe that we could gain 4.5-6 ins all while placing less stress on the drivetrain than any other lift technique. I get that they're expensive, but I'm suprised no one even makes one. Best I can find is Mark's 79 series kit, but we have IFS...

It'd be sick if we could souce Megacruiser portals (in a dream world), or have aftermarket arms/axles that could accept Humvee portals or something similar that we could grab on the used market.
 
I have to say when this thread first popped up I was also in the "what's the point" camp. More time with my cruiser and the limitations of the torsion bar system and I'm starting to get it. However, once you sink the money in to convert to a coilover the question is: should you have just bought a 200?!

or an 80 :meh: if I could do it over, I would just build an 80. I love my 80.
 
or an 80 :meh: if I could do it over, I would just build an 80. I love my 80.

Absolutely. Really can't beat a solid axle for flex. I guess it comes down to what people use their vehicles for and if the coilover (long travel or not) could help with ripping down washboard forest service roads then that suits the style of the 100 well. I have rock crawled on some of the trails around me with my truck and a little extra down-travel would be fantastic, but it wouldn't be worth several thousand bucks.
 
Why can't we get a portal axle kit? My preliminary research leads me to believe that we could gain 4.5-6 ins all while placing less stress on the drivetrain than any other lift technique. I get that they're expensive, but I'm suprised no one even makes one. Best I can find is Mark's 79 series kit, but we have IFS...

It'd be sick if we could souce Megacruiser portals (in a dream world), or have aftermarket arms/axles that could accept Humvee portals or something similar that we could grab on the used market.

Not it the LC realm....but that's exactly what I'm doing now on a full-size Chevy project. 19" of clearance under the pumpkin by using Unimog 404 portals on a Ford 9" centersection. The entire axle centerline moves UP by 4.5" as a result of the portal boxes which is a massive improvement. It still fits in my garage through a 7' rollup door... but just barely. Once you go portal, it's a lot easier to add CTIS (Central Tire Inflation System) as well... :)

IMG_9643.JPG


FEF.JPG
 
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Not it the LC realm....but that's exactly what I'm doing now on a full-size Chevy project. 19" of clearance under the pumpkin by using Unimog 404 portals on a Ford 9" centersection. The entire axle centerline moves UP by 4.5" as a result of the portal boxes which is a massive improvement. It still fits in my garage through a 7' rollup door... but just barely. Once you go portal, it's a lot easier to add CTIS (Central Tire Inflation System) as well... :)

View attachment 2257767

I have that same texas bucket!
 
Not it the LC realm....but that's exactly what I'm doing now on a full-size Chevy project. 19" of clearance under the pumpkin by using Unimog 404 portals on a Ford 9" centersection. The entire axle centerline moves UP by 4.5" as a result of the portal boxes which is a massive improvement. It still fits in my garage through a 7' rollup door... but just barely. Once you go portal, it's a lot easier to add CTIS (Central Tire Inflation System) as well... :)

View attachment 2257767
I'm in love.
 
I'm in love.


Thanks. Me too.... it's been a lot of work and literally a dozen years of effort and learning as I go.

Don't need to crap up this thread with non-Toyota content, but you can see more photos of the entire thing if it interests you:

www.mightaswellK5.com


Enjoy.

-G
 
I really wish that we could convince Marlin Crawler to modify their new RCLT setup for Tacomas and 4Runners to the 100 series platform. Imagine fixing steering rack issues, being able to fit bigger tires and also having a true long travel setup in one solution.

 
Clearly this is happening in Bulgaria. Any clue who is making the portal boxes?

Not IFS, but for s***s and giggles, here is a local SAS + portals convertion of a UZJ100, next to my HDJ100 with the AHC on High
Same portals, next to the HDJ (AHC at Normal) on a f*cking Kia Sportage!
 

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