help needed, low gear/motor beef up
04-16-2007, 03:10 PM
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help needed, low gear/motor beef up
is there anything you can do to lower the transfer case gears the chain driven case, or are we just stuck to all out tranny and t-case swaps. and what all can be done to beef up the stock 3.0? i running 37s, 4.88s, sas. soon to go to lower ring and pinion gears, either 5.29 or 5.71. right now, even in low range, it still doesnt pull very well at all, a slight incline kills it, and yes thats in low! so much help is needed, would be greatly appreciated, thanks.
04-17-2007, 07:52 AM
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ya i think its an issue that needs to be addressed. one of these parts manufactures needs to come up with some kind of low range for these things. it sucks that all you can do to get low t case gears is the tranny and t case swap. then after all that money spent, you gotta spend more on the low gearing. stupid auto tranny...
04-17-2007, 09:44 AM
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They have addressed the issue: get a gear driven case.
Marlin and Inchworm both make adapters to run a gear drive case on V6 trannies. And lets face it, top shift gear drive t-cases are cheap.
The gear drive is just a simpler t-case to build new gears for. All you need is the gear and a set of bearings, you don't need to worry about new longer chains. Plus "in theory" it's less stuff to break...admittedly I've never heard of a busted t-case. Plus if you think about it: if everyone builds after market parts for the same system, there has to be a reason. And you're going to be getting a more variety to choose from.
Oh...it just clicked in that you have an auto, which brings another issue: the auto t-case is pretty much build into the tranny. It is possible to seperate it(I remember reading someone that did it...ended up with dual cases and an auto), but it's quite the feat. So if it's that much of a PITA to even remove the t-case, imagen opening it up to replace the low range gears.
I feel for you, I really do. But there are only a few ways to gear lower, so you have to pick the one that repulses you the least.
Marlin and Inchworm both make adapters to run a gear drive case on V6 trannies. And lets face it, top shift gear drive t-cases are cheap.
The gear drive is just a simpler t-case to build new gears for. All you need is the gear and a set of bearings, you don't need to worry about new longer chains. Plus "in theory" it's less stuff to break...admittedly I've never heard of a busted t-case. Plus if you think about it: if everyone builds after market parts for the same system, there has to be a reason. And you're going to be getting a more variety to choose from.
Oh...it just clicked in that you have an auto, which brings another issue: the auto t-case is pretty much build into the tranny. It is possible to seperate it(I remember reading someone that did it...ended up with dual cases and an auto), but it's quite the feat. So if it's that much of a PITA to even remove the t-case, imagen opening it up to replace the low range gears.
I feel for you, I really do. But there are only a few ways to gear lower, so you have to pick the one that repulses you the least.
04-17-2007, 09:55 AM
#7
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Yeah there is an adapter now, look here:
http://www.inchwormgear.com/store/pr...products_id=86
or here:
http://www.pirate4x4.com/forum/showt...fer+case+mount
http://www.inchwormgear.com/store/pr...products_id=86
or here:
http://www.pirate4x4.com/forum/showt...fer+case+mount
Last edited by mt_goat; 04-17-2007 at 09:57 AM.
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04-18-2007, 11:58 AM
#10
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The Inchworm adapter requires the use of a 23 spline input shaft. I think that only came stock with the 4 cyl turbo model, but a 21 spline can be made into a 23 spline IIRC.
04-18-2007, 12:16 PM
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the 23 spline input is only $129 from trail-gear so thats not a real issue. Having a turbo T-case would do you no good as they are all forward shift and would require about $120 in parts to convert to top shift. If your running 37's on the Toyota auto trans you really need to be running 5.71's because you have a very tall overdrive in the auto. I have a friend with an 85 4runner on 36's with 5.29's using an auto and he has no power issues on the trail in low range. You may have a transmission slippage problem.
04-18-2007, 01:21 PM
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05-05-2007, 06:54 PM
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They have addressed the issue: get a gear driven case.
Marlin and Inchworm both make adapters to run a gear drive case on V6 trannies. And lets face it, top shift gear drive t-cases are cheap.
The gear drive is just a simpler t-case to build new gears for. All you need is the gear and a set of bearings, you don't need to worry about new longer chains. Plus "in theory" it's less stuff to break...admittedly I've never heard of a busted t-case. Plus if you think about it: if everyone builds after market parts for the same system, there has to be a reason. And you're going to be getting a more variety to choose from.
Oh...it just clicked in that you have an auto, which brings another issue: the auto t-case is pretty much build into the tranny. It is possible to seperate it(I remember reading someone that did it...ended up with dual cases and an auto), but it's quite the feat. So if it's that much of a PITA to even remove the t-case, imagen opening it up to replace the low range gears.
I feel for you, I really do. But there are only a few ways to gear lower, so you have to pick the one that repulses you the least.
Marlin and Inchworm both make adapters to run a gear drive case on V6 trannies. And lets face it, top shift gear drive t-cases are cheap.
The gear drive is just a simpler t-case to build new gears for. All you need is the gear and a set of bearings, you don't need to worry about new longer chains. Plus "in theory" it's less stuff to break...admittedly I've never heard of a busted t-case. Plus if you think about it: if everyone builds after market parts for the same system, there has to be a reason. And you're going to be getting a more variety to choose from.
Oh...it just clicked in that you have an auto, which brings another issue: the auto t-case is pretty much build into the tranny. It is possible to seperate it(I remember reading someone that did it...ended up with dual cases and an auto), but it's quite the feat. So if it's that much of a PITA to even remove the t-case, imagen opening it up to replace the low range gears.
I feel for you, I really do. But there are only a few ways to gear lower, so you have to pick the one that repulses you the least.
I have a 90 V6 with a 5spd, and I just broke the chain in my t-case. My question is can you put a gear driven case in place of my chain driven one?
Thanks for the help. I've been searching, with no luck to my question. If I need to I will start a new thread.
05-05-2007, 07:11 PM
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In stock form the Gear driven t-cases cannot be mounted to a V6 tranny.
Both Marlin and Inchworm make adapters and kits to run Gear driven case on V6 trannies. It requires swapping out the input shaft from the stock 21 spline(on the 4cyl case) to a stronger 23 spline (as found on the V6). Plus there is an adapter plate between the tranny and case.
It's not cheap, but it really opens up options for you: lower gears and dual cases. And if you're breaking T-case chains...fork up the cash and get the adapter and parts. You can get a Top shift t-case for $50 if you look.
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