SOA Questions

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Joined
Jan 1, 2006
Threads
46
Messages
285
Location
Cheyenne, WY
I was curious what tire size people were running on a 55 with SOA?

Also I was curious about the handling of the 55 once they did a SOA.

Thanks

James
 
Howdy! I agree with Pablo Cruise on the 35's. Anything smaller would look out of place, even if you keep it short. Handling on the road and on the trail are two different things. All depends on how much other work you plan on doing. I highly recommend lower gears, as I do not have them. Hopefully a ToyBox for me in the future. Mine is dual shocks all around, but it is still very flexible. I go faster than most on a lot of trails. For highway, steering geometry is everything. Make sure the angles and dangles are spot on. I highly recommend the cut-n-turn setup for the front axle. When I lived in Cheyenne, I went skiing at Steamboat during a lot of blizzards. Cut-n-turn is just about mandantory for doing much speed for any distance. I also recommend an anti-wrap bar for the rear. I learned that one the hard way. John
 
I would think you HAVE to cut and turn on a 55. That front driveshaft is REALLY short. Unless you are changing drivetrains completely, which I think you are.

Although with my Alcan's my pig was as tall as toplessFJ's FJ55. Mine drove well down the highway even with manual steering.
 
I would think you HAVE to cut and turn on a 55. That front driveshaft is REALLY short. Unless you are changing drivetrains completely, which I think you are.

Although with my Alcan's my pig was as tall as toplessFJ's FJ55. Mine drove well down the highway even with manual steering.
Howdy! The Cut-N-Turn really comes into play if you want steering manners at speed AND run in 4wd, like going up in the high country to go skiing. Shims can get the steering geometry pretty good, but the DS angles will not let the front ujoints turn very fast. John
 
Ok what is Cut and Turn. I'm lost.
Howdy! The more lift on a rig, the more angle on the ujoints. Compressing the suspension reduces the angle, but extending it increases the angle. Ujoints tend to fail at the most inconvenient moment, when pushed past the maximum angle they are designed for. One way to reduce the angle is by using a double ujoint (Constant Velocity Joint) at the transfer case end of the shaft, and then using a single ujoint at the pinion flange. The diff must be rotated upward so that the single ujoint operates at nearly no angle at all. This requires repositioning the spring mounts on the axle housing, and then cutting the knuckles off the ends of the axle and welding them back on so that the steering geometry ends up around 3 or 4 degrees of caster for good on road handling. There are a lot of other variables, and assorted opinions on how much lift and angle, but it is ONE generally accepted solution. I have been running this setup for about 20 years. John
 
Thanks for the education John.

I guess that would explain why rigs I have seen with SOA can wheel well but lack manners on the road.

So with all this new knowledge, what is the better way to go. SOA or Suspension lift?

And with that question being asked I know there are a lot of factors but what I am looking at is the handling of the vehicle. I will be using the Pig as a daily driver, Trail Rig, and Drifting Snow Escape Vehicle.

Thanks for your input.
 
Thanks for the education John.

I guess that would explain why rigs I have seen with SOA can wheel well but lack manners on the road.

So with all this new knowledge, what is the better way to go. SOA or Suspension lift?

And with that question being asked I know there are a lot of factors but what I am looking at is the handling of the vehicle. I will be using the Pig as a daily driver, Trail Rig, and Drifting Snow Escape Vehicle.

Thanks for your input.
Howdy! Cut N Turn is not perfect, by any means, but it was the best method available at the time for my applications (dreams and desires). Parts availability, mechanical skills, and BUDGET have a big part in the plans. Start with the minimum requirements. If it is a daily driver, creature comfort and practicality count. Next comes driving manners, which may or may not include high speed 2 x 4, and/or 4 x 4 running. If your a meat hunter, then how far up in the Snowy Range will it have to take you for elk and Brookies? Need to haul the wife and kids, how about a week's worth of camping gear? Are you likely to spend hours and hours driving on Forest Service roads full of washboard? With the right setup, you can drive French Creek Rd just like Happy Jack Rd. FAST!!! Are you more likely to be in boulders and bedrock, or muddy beaver swamps and fallen timber? A 2 - 4 inch lift and some 31 - 33" tires will go a long way for much of this. In 1976 I started with a bone stock 72 FJ40. I felt pretty macho when I went to 2" lift and 11.50 x 31's, L78 series Armstrong Norsman. When the transmission died, I went to a 350, SM 465, and Q78 (35's) with a 4" recurve. Worked great; no lockers, no sliders, no winch. In 1984 I moved to Phoenix and started going to Open Desert Races. WOW!! They go fast. With 3 kids and a big dog, I decided to get a wagon. Within 3 months, I went SOA. The good old boys at Fly-N-Hi thought I was off my bloody rocker! They had done a lot of FJ40's, but nobody does that to a wagon!! TaDa! Here I am over 20 years later. I would recommend that once you decide on a final goal, then try to stairstep it so you can do a little at a time and keep it on the road as your DD. There is a great wealth of knowledge right here on IH8MUD to guide you. Keep reading everything you can, even on the 60's, 80's, diesels, trailers, whatever. Pigs are Phantastic!! Do what works best for YOU! John
 
I think 35's are the perfect size if you ask me.. 37's work but are big and can cause some complications with stopping and axle breakage but I have never run 37's. The 37's will also not fit into the wheel wells without trimming, again making 35's rock solid.... If you click the link in my sig to my '71, you can see some pics of my SOA pig.. It handled very well, in fact was maybe even more stable than most stock SUA pigs.. I did have to build the spring packs strong but I never received complaints about it being tippy...

Also check out this article, it is a complete overview to a SOA. The drawback being that it does make the vehicles large but they handle fine. I do recommend a cut and turn though, but you can probably get away without one..

IH8MUD.com SOA Technical Section
 
Thanks for the great info and tech article.

John,

So how do you know I live off of Happy Jack?

Anyways, I am trying to build up a project list so I can keep the Pig on the road as I modify it. I have helped others do the same with Jeeps and it seemed to work pretty well. We tried to not take on projects that could not be completed over a weekend or waited for a holiday weekend to do them.

I have an idea of what I would like to see a 55 look like, now its trying to get it there.
 
Thanks for the great info and tech article.

John,

So how do you know I live off of Happy Jack?

Anyways, I am trying to build up a project list so I can keep the Pig on the road as I modify it. I have helped others do the same with Jeeps and it seemed to work pretty well. We tried to not take on projects that could not be completed over a weekend or waited for a holiday weekend to do them.

I have an idea of what I would like to see a 55 look like, now its trying to get it there.
Howdy! Just a lucky guess? My hunting partner used to live on the north side, about 1/2 mile west of I_25. Used to be some older ranchette type homes on a little parcel of dead land that looked like it should of belonged to Warren AFB. I lived off of Tank Farm Rd, just north of College Drive from 75 to 84.
Anyway, I think you've got the right idea. It may not be the least expensive, but it is the most practical way for you to get from stock to your ultimate goal. Throw some pics up here when you start wrenchin. John
 
33s look silly on an SOA Pig...35s are the minimum but they start to look small after a while. I had to trim my front fenders for the 35s...I got no bumpstops.
 
Change 20 of 100.

Just got back from looking at a 55 that Justin at Redline Motorsports is working on in Calhan, CO.

He swapped the stock 55 springs for 60 series springs with an add-a-leaf as well as a shackle flip on the front. Also they completed a 60 power steering swap at the same time. The setup is way cool and handles like a dream, also gave the 55 enough lift to clear 35's.

After taking a look at it I am going to go with the 60 series springs instead of a SOA.
 
Change 20 of 100.

Just got back from looking at a 55 that Justin at Redline Motorsports is working on in Calhan, CO.

He swapped the stock 55 springs for 60 series springs with an add-a-leaf as well as a shackle flip on the front. Also they completed a 60 power steering swap at the same time. The setup is way cool and handles like a dream, also gave the 55 enough lift to clear 35's.

After taking a look at it I am going to go with the 60 series springs instead of a SOA.
Howdy! Where's the pix? What a tease! Sounds pretty neat. That would be a good way to keep the overall profile a lot lower. It might even fit in a standard 7' garage door. Did he use the 60 springs on both ends? How much did he have to move the spring hangers? Clearing 35's is one thing, but stuffing them is a whole different subject. With 5" extended bump stops, I can just about kiss the inside of my front fenders, but not quite. If I didn't run the sway bar on the rear, I think they would rub back there, I've just been too lazy to find out. Check it out. It's hard to see, but the left rear is hanging free. John
twistedpig2.webp
 
Justin, who did the work, is RLMS on here. I'm not sure if he will chime in or not.
 
we did the work, and to say that it wont work is not optional for us because, thats not the way we think. we have some tricks up our sleeves to make this happen. And if i told you we would have to kill you...LOL. The pig that we just finished is going to have some slight mods to make it perfect. James pig will have those mods with a couple more.... Pics will come as progress does. The tires will fit nice and snug, with droop and not a whole lot of compression, we can get away with this, due to the fact of the wheel base is around 106"
the hangers were modified out, down and back to get what we want.
I was also thinking of doing some chevy 1/2 ton springs to allow a ton of droop. What do you think James?
Wheel spacers might also be in the picture for James.

what we are trying to do is basicly provide a well driving, stable on road pig, that can be built within a budget, and be able to wheel well.

Our " GUINNIE PIG" was RED CRUISER'S pig. and now we know exactly what to do to get this baby just how we want it!

Feel free to show your opinion on our " awnser " as you wish...hey its america for god sakes...

oh AND " there are never problems, just solutions " :cheers:

JUSTIN
 
I was also thinking of doing some chevy 1/2 ton springs to allow a ton of droop.
JUSTIN

Might I suggest 3/4 ton chevies? 1/2 tons won't cut it due to the weight of the pig. I ran 3/4 ton chevies on my SO pig and loved them. Great ride, great flex, and cheap to install. HTH, BTW, I endorse SOA on a piggie, cut and turn, and 36's as an overall sweet set up, drop the bumpstops a little and no trimmin was necessary (may have scuffed a little but nothing bad).

*edit Here is a pic SOA, 3/4 ton chevy rears, stock mixed front pack 2 extras I believe, 37's

CMCCJ500001.jpg
 
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