Definitive 200-series Gearing Reference (1 Viewer)

[Hants]

Full overland/off-road. Kimberley Karavan

Had a Kamper a while ago and took it places that stock heeps couldn’t go.

Will be on the freeway to get to trailheads, else back country.

I’m not expecting it to impact the aerodynamics much (beyond the lift, meats, armor, rack), but the weight and rolling resistance may make a difference.

I run an ODBLink and closely monitor temps, gear, and TC lockup. Even without towing, there are some interesting things going on. I’ll do a full write up at some point.

For here: Seeing downshifting a fair bit at higher speeds depending on even slight grades. Seems to unlock only for short periods when shifting, then locks back up (in the lower gear). Not seeing long duration unlocked (on the freeway), even at significant loads and significant downshifting. Only time is when 4th is necessary due to very steep grades. I have not tested manual shifting in this circumstance to see if higher RPM/lower load would facilitate lockup.

TC will lockup all the way down to 2nd (have never seen it lock up in 1st). I see this in high range, on forest service roads, at relatively low loads.

I have not explored the thresholds of RPM & load to determine what the graph looks like, but I suspect there is one.

 

[Chrisleduc1]

I have an 8-speed on 34’s. Fully armored, with 24 gallon aux tank, drawers full o junk. Heavy.

I live at 7,300’ and commonly do hard-core wheeling at 9,000’+.

Regarded to 3.9’s.

Current observations:

* Forest service roads: I use high because low is too low
* 4x4 trails: low; there is *plenty* of power available
* Around town: transmission and gearing are perfect (with ECT full time)
* Freeway up to about 65: Effortless
* Freeway >65: Enough foot pressure and downshifting that I notice it. Not bad or uncomfortable, but not effortless (for the rig).

Soon, I’ll be towing a 5K trailer. Wondering if I’ll wish I went to 4.3’s, particularly on the freeway.

In direct answer to your question: I don’t think you need gears merely for 33’s-34’s. Start getting heavy and crippling the aerodynamics and you get into the “maybe” zone. Add towing and/or altitude, and my view is you’re in the “you should strongly consider” zone. These rigs are incredibly powerful and versatile - even with all the above, you’d likely still be drivable without gears.

What are your thoughts based on your experience and my build? I have an ‘18 LX (prettysure there is no ECT button) and with bumpers, sliders, armor, which, rack, 40gal, and 3 car seats, I’m heavy. High 7’s solo and low 8k with the family. Then I’ve got a small trailer.

Most of my use is local driving, house to the store, here to the next town (60mph) or into the city 90 mins away (75mph). Not really any true stop and go city driving. Some sand. Some forest roads, or worse. No rock climbing.

I’m under 10MPG on the highway. Sluggish all the way around. 33.3 tires. Most sea level of under 2500’

I’m trying to determine when I might regret 4.3s?? I’ll prob love them on the highway (where it’s drinking gas faster than the LRA aux pump can transfer it).

 

[grinchy]

What are your thoughts based on your experience and my build? I have an ‘18 LX (prettysure there is no ECT button) and with bumpers, sliders, armor, which, rack, 40gal, and 3 car seats, I’m heavy. High 7’s solo and low 8k with the family. Then I’ve got a small trailer.

Most of my use is local driving, house to the store, here to the next town (60mph) or into the city 90 mins away (75mph). Not really any true stop and go city driving. Some sand. Some forest roads, or worse. No rock climbing.

I’m under 10MPG on the highway. Sluggish all the way around. 33.3 tires. Most sea level of under 2500’

I’m trying to determine when I might regret 4.3s?? I’ll prob love them on the highway (where it’s drinking gas faster than the LRA aux pump can transfer it).

With all that weight and the permanently reduced aero I think you're in line for 3.9s on the 8 spd for the above use case.

I say this as a very happy user of 4.88s on the 6 spd. You already have a better ratio in first, but you need help with revs at high speed - one ratio up should do it. I could be wrong . . . whatever the final gear ratio is in 6th (edit: chart says I'm at 2.541 with 35", 6 spd, and 4.88s) is pretty ideal in my opinion. I can run 75 all day long with not much shifting, the NVH is good, and when I stomp on it to pass it has the balls.

 

[Chrisleduc1]

With all that weight and the permanently reduced aero I think you're in line for 3.9s on the 8 spd for the above use case.

I say this as a very happy user of 4.88s on the 6 spd. You already have a better ratio in first, but you need help with revs at high speed - one ratio up should do it. I could be wrong . . . whatever the final gear ratio is in 6th (edit: chart says I'm at 2.541 with 35", 6 spd, and 4.88s) is pretty ideal in my opinion. I can run 75 all day long with not much shifting, the NVH is good, and when I stomp on it to pass it has the balls.

I’m not passing anybody on the highway, which is...fun, when it’s 2-lane with logs trucks and tourists and then you get the occasional short passing lane and mash the gas, and nothing happens

 

[grinchy]

Maybe two ratios up would be the ticket. What size tires?

 

[Chrisleduc1]

Maybe two ratios up would be the ticket. What size tires?

Wildpeak 305/55/20s, showing 33.3 in

 

[grinchy]

Do you still have your stock wheels and tires? If so pop those on and see how it is. That would be what 3.9 would be. Roughly.

 

[grinchy]

The more I think on it the more I think 4.3 @Chrisleduc1

 

[empty80]

If anyone is curious about the gearing range and RPM range for the 8-speed, I've got a sheet I'd be more than happy to share. Just adjust tire diameter, and it will show RPM based on gearing and vehicle speed.

 

[VooDoo2]

If anyone is curious about the gearing range and RPM range for the 8-speed, I've got a sheet I'd be more than happy to share. Just adjust tire diameter, and it will show RPM based on gearing and vehicle speed.

View attachment 2634630

Can you add the 4.5L Diesel and 6 speed for use Aussies with 3.9's and 4.3's. We sometimes fit 4.88's too

 

[linuxgod]

Can you add the 4.5L Diesel and 6 speed for use Aussies with 3.9's and 4.3's. We sometimes fit 4.88's too

The info in the first post should work for you. Diesel or petrol shouldn’t matter.

 

[empty80]

Can you add the 4.5L Diesel and 6 speed for use Aussies with 3.9's and 4.3's. We sometimes fit 4.88's too

No worries. If you send me the gear ratios for your transmission options, I can build it out pretty quick.

 

[VooDoo2]

No worries. If you send me the gear ratios for your transmission options, I can build it out pretty quick.

1st 3.333; 2nd 1.960; 3rd 1.353; 4th 1.000; 5th 0.728; 6th 0.588; Reverse 3.061

Factory Diff ratio is 3.91
Common swap is 4.3 and 4.88

 

[MTKID]

So… @TeCKis300 … what would that chart of RPM’s look like with 4.88’s and 40’s

 

[grinchy]

So… @TeCKis300 … what would that chart of RPM’s look like with 4.88’s and 40’s

did you consider 5.29?

 

[MTKID]

did you consider 5.29?

I did but I couldn’t find a source for anything above 4.88

Looks like maybe 1853rpm at 75mph on 40’s with my questionable math skills. Sounds perfectly doable.

 

[grinchy]

I did but I couldn’t find a source for anything above 4.88

Looks like maybe 1853rpm at 75mph on 40’s with my questionable math skills. Sounds perfectly doable.

Yeah, I haven't seen anyone do it. Did you call Nitro and ask? They refer to mid gen 100 series in this post 4.56 4.88 5.29 gears for LC 40, 55, 60, 70, 80, 100 series - https://forum.ih8mud.com/threads/4-56-4-88-5-29-gears-for-lc-40-55-60-70-80-100-series.226908/ for 5.29 compatible, which I think that third just bolts up.

They have the front on the site and including 200s already:

Toyota 9'' Reverse 5.29 Nitro Ring & Pinion

Toyota 9' Reverse 5.29 Nitro Ring & Pinion gears are manufactured from 8620 steel gear forgings. Nitro Gear & Axle strives to provide the highest quality differential & axle components available. We take the steps necessary to ensure our parts are dependable.

www.nitro-gear.com

Any yes, I know the cow left the barn anyhow. Just for future readers I suppose.

 

[MTKID]

Yeah, I haven't seen anyone do it. Did you call Nitro and ask? They refer to mid gen 100 series in this post 4.56 4.88 5.29 gears for LC 40, 55, 60, 70, 80, 100 series - https://forum.ih8mud.com/threads/4-56-4-88-5-29-gears-for-lc-40-55-60-70-80-100-series.226908/ for 5.29 compatible, which I think that third just bolts up.

They have the front on the site and including 200s already:

Toyota 9'' Reverse 5.29 Nitro Ring & Pinion

Toyota 9' Reverse 5.29 Nitro Ring & Pinion gears are manufactured from 8620 steel gear forgings. Nitro Gear & Axle strives to provide the highest quality differential & axle components available. We take the steps necessary to ensure our parts are dependable.

www.nitro-gear.com

Any yes, I know the cow left the barn anyhow. Just for future readers I suppose.

That pig is already out of the pen.

Maybe I should have dug further? When I was working toward re-gearing my 100, I had spent some time along with Zuk and the Harrop importer. And I never received a solid answer for it. There was hope, but never a solid answer.

I heard a few people express concern about a 5.29 ring tooth size. Others don’t seemed concerned but I’m no specialist so tough to know what to do.

I certainly hope that, as these get older, people continue to play with them more and take the platform further, even if it isn’t practical.

 

[TeCKis300]

I did but I couldn’t find a source for anything above 4.88

Looks like maybe 1853rpm at 75mph on 40’s with my questionable math skills. Sounds perfectly doable.

Expanded this table to cover 40s. Hopefully I didn't fat finger anything. 4.88s will still easily cover 40s with better than stock gearing.

I seem to be missing my RPM table. Hand jamming, as we know 4.88s with 40s in 6th gear is still 102.1% better gearing than stock. Stock rpm @ 75mph is 1930RPM.

102.1% * 1930RPM = ~1970 RPM @75MPH

You'll be sitting pretty with as light as your setup is.

 

[Jason Andrews]

That pig is already out of the pen.

I certainly hope that, as these get older, people continue to play with them more and take the platform further, even if it isn’t practical.

Need that 4:1 low range combined with a 10% underdrive high range t-case upgrade. When will that drop!?

That would yield a result similar to 5.29s on the street and the obvious low range off-road gearing benefit as well.