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Lets talk Yota drivetrain



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Old 12-23-2014, 03:22 PM   #1
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Lets talk Yota drivetrain

I'm all new to using toyota drivetrain for anything. I'm planning/gathering stuff already but unsure of how much to add to it all. Plans are a light weight full buggy 22r on pane, w56b tranny and Yota axles. I'd like to get around 96-100" wheelbase and run 37's or even 35's. I'm wanting to stay simple, small, and light. Now, my question comes into gearing, as there are tons of options. 2.28, 4.7, double 2.28, or 2.28 and 4.7. Then the axles (have 4.10's currently). If I stay 35's, what should I shoot for on gearing? How about if I step up to 37's? Thinking I could go dual stock cases and 4.10's on 35's(if wheelbase can get short enough). That leaves me open for tcase gears later, and axles gears. Then if I decide to increase tire size or want more options, there is room to improve. Any input out there from those more experienced with the yota's??
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Old 12-23-2014, 03:34 PM   #2
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A W56 has a first gear ratio of 3.954, take that along with a doubler with 2 stock cases would be 2.28x2.28 and then 4.10s in you axles. So that would be 3.954x2.28x2.28x4.10= 84:1 final ratio. Just putting 4.7 in the back case bumps it up to 174:1. Or if you were to just put 5.29 in the axles that would take you to 109:1. I personally think 174 is to low of a ratio but that's me. But putting 4.7s in the back case and 4.10's in the axles puts a lot of strain on the cases. I would put 5.29s in the axles and leave the cases stock for now. Or leave everything stock and go from there.


Edit: id also look for some 37" red labels and put some longs in the front axle and call it a day.
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Old 12-23-2014, 06:57 PM   #3
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I used to think that 200:1 would be "too low" but after seeing the control it gives you, and the ability to hunt for traction, I love it. The beauty of it is that you can always change it up from '2.28 or 4.7' to '2.28 AND 4.7' to find the ratio that works best on any particular climb. I've had times that low-low was too low and wouldn't go, so I went to 4.7 only and bumped for the win. I would go with a low axle ratio, though, at least. Takes the strain off your t-case output shaft.
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Old 12-24-2014, 05:16 PM   #4
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Whichever you choose upgrade the rear output. I ran a longfield after snapping the stocker. That was with a 4.3,th350,4.37s,4.7 single case. Ran 37" stickies and beat the living **** out of things. Only broke the output. Never the axle gears or t case gears. I was hell on the steering studs and wheel studs though. Sheared off plenty so look to upgrade there. Also broke 2 longs. That's why I'm at tons now, but that's a different story.

For you I would keep go stock 2.28 doubler cases and keep the 4.10s. The first 2.28 is nice to have to creep around the on the fire roads. Go 23 spline in the cases and buy some longs and new studs and wheel the **** out of it.
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Old 12-25-2014, 12:40 PM   #5
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Thanks guys! I think for now I am just going to plan on dual stock cases, and keep the 4.10's and get it on the trail. Then, I can see how it performs and decide what needs different gears if anything.
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Old 12-25-2014, 06:18 PM   #6
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I ran a lot of the hardest trails in the SW in a yota with 35s. I could only assume it would be easier in a buggy.
A lot of folks say a doubler with 4.7s is too low of gearing. To those people all I can suggest is learn to use any of the 15 other gear choices available. Need tire shredding wheel speed,try rear case low and about 3ed gear. Really the choices are endless. Just because its geared low dosnt mean it's the only speed available. Another thing to think about is simply driver skill. If you drive like you stole a Sherman tank,than maby yota stuff isn't ideal. But if you can call yourself a machinery operator and drive like you can feel every pebble than you can make folks envy your tiny machine and its abilities. Just a few things I have learned going from high power heavy weight rigs to the smaller stuff.
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Old 12-25-2014, 06:23 PM   #7
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Lol! Yup, I went the Sherman tank route before, it's quite expensive! Going to try the small route and see if I can keep it together.
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Old 12-25-2014, 06:28 PM   #8
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I was actually surprised how far a light foot and a light rig would take me. I owe my mini rig skills mostly to Awesome Harley,as I was like a kiddo watching porn when he would drive ftoy57. I was afraid to blink as I might miss a secret.
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Old 12-29-2014, 07:05 PM   #9
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My experience is with a 22r, you NEED gearing, all you can get and like stated above, up shift when you need speed. All the Toyota guys I wheel with run 2.2,4.7 with 5.29s. They are in jut 4.7 most of the time and shift the front case in when the trail gets tough. In a lite buggy, either stock duals or single 4.7 should be fine but I'd go for broke, over 200:1 so it's there when you need it.
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Old 12-29-2014, 07:52 PM   #10
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I am building a yota for my son now and it seems like 5:29 is a must. We are staying with 4:10 at first due to budget for now, but I hope to get a set of 4.7s or a doubler in the next year. My thinking is that transfer case gears are more important than diff gears.


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Old 12-29-2014, 09:23 PM   #11
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Well looks like I have settled on dual case 2.28 front and 4.7 rear. Worked a deal on a setup today.
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Old 12-30-2014, 11:11 PM   #12
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Another vote for duals with the 4.7's in the rear case. 5.29's with 35's or 37's is just about perfect.
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Old 12-31-2014, 07:49 AM   #13
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I wheeled this last season with that setup on 39.5 Isuks and it did awesome, until I shattered the front r&p. The 60's with 5.38s are in process of installation, so it'll be great now.
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Old 12-31-2014, 07:16 PM   #14
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Watch the whiskey throttle with the 4.7's.
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Old 12-31-2014, 08:56 PM   #15
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Perfect setup with duals and 4.7s rear as long as you gear the axles too...take stress off that rear t case output. Upgrade that too...
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Old 01-02-2015, 11:43 AM   #16
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I run 4.3/tb350 into a stock 2.28 doubler with long field output shaft into a set of rockwells and 42's. my rig is 4200lbs with my fat *** in it.

I got to the point wear im breaking the gear sets now, well the case well stress crack, giving the gears slack or room to slip.

I would do a 4.56 or 5.13 gear set with

a single 4.7 t-case. with 5spd trans.
or
2.28 x doubler with 5spd trans.

I have seen way to many 5.29 gear set break with doubler and 38' or bigger tires...
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