Clocking T-case?

[userthunderbird]

Have an off the wall question.
CAn the Yota gear drive  T-case be clocked around so that it can be used with a drivers side diff,

Will this create oiliing issues?

[YotaYota]

Never herd of clocking a toyota t-case, but you can lift the drivetrain(BudBuilt.com) Why would you want to flip it to driverside diff?

[Marlin]

It would create major oiling problems :unhappy:
I looked at it a few years ago to put it in a Bronco.
Did not look good.  I will take another look at it this weekend.

Marlin

[userthunderbird]

Thats what i wanted to install it in, an Early Bronco

I saw the flip kit for the dana 300 and went , hmmmm... I wonder if...
.
I an using a T-18 now, which is a big improvement over the stock 3 speed, but it is no fun on the street. Too clunky and I need an overdrive, with 4.11's and 33's

the double cases avail for the Bronco are major$$$

I just wanted a slick shifting 5 speed and double cases.

prolly wind up with the ZF 5 speed, but the ratios are still way far apart. The NV 3550 is a decent swap,  if you have lower gears in the t-case, but reverse is a higher ratio than first, how silly is that.?

guess i could always have someone  swap the axle tubes from side to side, to move the diff over.

would the 151F hold up to a fuel injected  5.0L?

BTW , I was flipping through an old 4 Wheel mag today  and saw your pic in Suprise Canyon  driving a red  truck, with the sign  showing "Marlins Mogul" , so named, it said, because you were the only truck to get over it without a winch.

[RUFF]

Marlin Dual case adapters and all sorts of other addapters have been cast up for years. Why cant a new rear half of the case be cast up so it is a LH drop instead? Especialy with your new rear disconect.

[userthunderbird]

If you could figure a way to flip the case to drivers side drop, that would open up alot of market since the only case avail for the Jeeps and Bronco's and Scouts, other than the stock Dana 20  is the crappy NV241, or the new flip kit for a Dana 300.

Why would there be oiling issues for the flipped  Yota case but not the D-300?

If ya come up with a way, i will be happy to install it and test it in my daily driver, see what happens.

[BigMike]

userthunderbird,

No, that is impossible. The way the stock t/case pumps oil to the rear housing is a gravity type system. As the oil is picked up by the front drive gears in the 2nd and 3rd housings, it gets circulated around and gets splashes up to the ceiling. This is where two oil galleys which are like cups catch and collect the oil. And as more oil gets up there, it pushes the oil to the rear of the case which feeds the oil pump. And the oil pump is how the oil gets back up into the front reduction housing where it falls out to the bottom, drains or fills back into the 2nd and 3rd housings and starts the process over again. Also, as the vehicle accelerates it encourages the oil in the galleys to move towards the back of the case via the resistance of inertia.

Some times I get a call from someone who's transfercase has burned up The first thing I ask is if those two oil catchers are installed right side up. Its like a cup remember, so if the cups upside down, it won't fill up. So if we clock the transfercase 180 degrees, then the stock oil pumping system wont work. However, now, with the whole t/case upside down, the oil is already present at the ceiling of the transfercase. But oil would never really make it up to the front output section of the 2nd and 3rd housing and in 4WD those three bearings (two ball, one cage) would run to hot!!

Also, an upside down case would be atlease half a foot taller since the input gear is a good 6" off from the center of the case. And speaking about the front output, remember with it right side up, it uses a set of three gears to move the output flange down for the front drive line. Now, what your talking about with it up side down would result in the front output to be tucked way way up under the truck and into the cabin of the vehicle maybe. The front drive line would need some insane flexability...

The D300 case is a more liner or horizontal case as apposed to the toy case so its not such a great problem I guess....

So, to get around all this confusion and trouble, we offer an adapter, P/N# MC09, that can place a Tacoma/T100/Tundra chain drive VF1A transfercase behind a reduction housing from a gear driven RF1A transfercase. So you can still run a dual case with a set of 4.7:1 gears and then use the chain drive t/case which, by stock, is a left hand (drivers) side front output transfercase

Regards,
BigMike

[userthunderbird]

Well it wouldnt be turning it 180 deg, be more like 90 I think, but  I wasnt sure how the oiling worked,
what would be the length of the Taco 5 speed with  its regular case, and  how much extra does the additional case add?

thanks

[krawlr]

The D300 setup runs a seperate oil cavity from the crawler box. The 2 boxes run as splash type systems since oil doesn't pass between the 2.

I'm running the D300 but I don't have enough seat time to decide if it was worth it.