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Orion and Atlas transfercases avail soon
- Thread starter Dusty
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Lag,
What is the spline count on the 440/42? When I swaped mine out for a Rodney special I believe I counted 19 splines. Is that correct?
Everybody,
Follow me with my thinking...
The Toy Box has a special prevision for the 19 spline H55F. My understanding of the installs so far is that the 19 spline output of the H55 gets cut off to a certain size and slide into the special 19 slpine toybox adapter. The tranny adapter on the back of the A440s should match that of the H55F. Does the tcase side of the old split case match that of the 80 series splitcase? If so why couldn't one use the H55F toybox and put it behind the A440F. Worst case scenario, the 80 series splitcase has a different pattern. The tranny to tcase adapter from a 62 A440 could be swapped with the 80series A440. This would be an incredible solution and is readily available as wee speak. Anybody with info please speak up.
What is the spline count on the 440/42? When I swaped mine out for a Rodney special I believe I counted 19 splines. Is that correct?
Everybody,
Follow me with my thinking...
The Toy Box has a special prevision for the 19 spline H55F. My understanding of the installs so far is that the 19 spline output of the H55 gets cut off to a certain size and slide into the special 19 slpine toybox adapter. The tranny adapter on the back of the A440s should match that of the H55F. Does the tcase side of the old split case match that of the 80 series splitcase? If so why couldn't one use the H55F toybox and put it behind the A440F. Worst case scenario, the 80 series splitcase has a different pattern. The tranny to tcase adapter from a 62 A440 could be swapped with the 80series A440. This would be an incredible solution and is readily available as wee speak. Anybody with info please speak up.
I have a used '96 FZJ80 trans with a cracked case that I can ship to whomever needs it for mockup of a lower geared Tcase setup. You pay shipping... trans is free.
The valvebody and shift solenoids have been removed.
PM me as I don't check this website often.
The valvebody and shift solenoids have been removed.
PM me as I don't check this website often.
Is there any new information on this tread? I need lower gears to push my 36.8 inch IROC's and I'm needing to decide which road to travel.
BenMara
Asian Redneck
oh no not again dreams of a Atlas 4 speed
Sounds like the Orion thing died.................Atlas would be nice...............
fzjconvert
one hand, two ducks
forgive me if these have already mentioned
Landcruiser Rockhopper Full time
But they are full-time or part-time and the reduction work out to closer to 4:1 that with a reduction box from slee. All you would be able to say is WOW
Hanna Quality
Supporting Vendor
Here is my pipe dream... the ultimate gear set to fit in a stock 80 case:
new Japanese gears that fit in stock case without any mods, bolt in
higher gear ratio high range the same as having 4:88 gears in diffs
fit higher gear ratio than 3:1 low range, get closer to 4:1
I talked to Marlin many years ago about a gear set for the FJ40 case (before he made a mini case for the 40) and he lead me to the idea that the only way to get a desirable low range to fit in a stock case the high range has to change to a higher ratio also. Not many with a 40 wanted to change there high range to a higher ratio, no over drive with a 4 spd and highway speed would be lost. The 80 series on the other hand needs a higher high range to get 35s and 37s down the highway and up grades better. I do not want to change the diff gears to weaker 4:88s from the stock 4:11s.
If the high range could be a smaller gear (instead of 1:1 a lower ratio .77 = 4:88-4.11 diff gears) allowing the low range to be a bigger and therefore higher ratio gear ( current Marks gears 3.1 + .77 high range = 3.87 closer to 4:1)
A better high range for bigger tires without changing diff gears and a lower low range all in one.
Just need to get Marlin to cut the gears...that's all : )
ok I pass the pipe now
new Japanese gears that fit in stock case without any mods, bolt in
higher gear ratio high range the same as having 4:88 gears in diffs
fit higher gear ratio than 3:1 low range, get closer to 4:1
I talked to Marlin many years ago about a gear set for the FJ40 case (before he made a mini case for the 40) and he lead me to the idea that the only way to get a desirable low range to fit in a stock case the high range has to change to a higher ratio also. Not many with a 40 wanted to change there high range to a higher ratio, no over drive with a 4 spd and highway speed would be lost. The 80 series on the other hand needs a higher high range to get 35s and 37s down the highway and up grades better. I do not want to change the diff gears to weaker 4:88s from the stock 4:11s.
If the high range could be a smaller gear (instead of 1:1 a lower ratio .77 = 4:88-4.11 diff gears) allowing the low range to be a bigger and therefore higher ratio gear ( current Marks gears 3.1 + .77 high range = 3.87 closer to 4:1)
A better high range for bigger tires without changing diff gears and a lower low range all in one.
Just need to get Marlin to cut the gears...that's all : )
ok I pass the pipe now
Sounds good to me! Get Marlin on the phone...
TrickyT
Hate that mud...
Ken,
You should talk to Ron at Webster Gears in Mill Valley. He does both prototyping and volume gear manufacturing, and has done development work for Marlin in the past. He's got more special purpose gear-cutting machines than I've ever seen in my life. I've seen carts in his shop piled high with gears and shafts for NP205's, and he's always building something custom for the Sear's Point racing crowd. Shoot me a PM if you want more info.
Standard Disclaimer: I have no affiliation with Webster Gears except that I live near by.
You should talk to Ron at Webster Gears in Mill Valley. He does both prototyping and volume gear manufacturing, and has done development work for Marlin in the past. He's got more special purpose gear-cutting machines than I've ever seen in my life. I've seen carts in his shop piled high with gears and shafts for NP205's, and he's always building something custom for the Sear's Point racing crowd. Shoot me a PM if you want more info.
Standard Disclaimer: I have no affiliation with Webster Gears except that I live near by.
pismojim
the Dude abides...
OK, I'll take the pipe. Hmmm, I'm not sure what's in your pipe but your references to highs and lows leave me confused, even before I took the pipe.
To clarify, you want a LOWER gear ratio in high range. That's an underdrive effect.
Going from 4.11 to 4.88 diffs is a 16% LOWER gear ratio. (under drive)
Going from 31s to 37s tires is a 16% Higher gear ratio. (over drive)
Net effect cancels each other out so speedo is still correct and mechanical advantage of the engine is the same as stock.
As you noted the Marks gears give you a LOWER low range ratio at the cost of a HIGHER high range ratio (overdrive). This is necessary as I understand to physically fit the gears in the case. A smaller diameter high range gear (less teeth) is necessary to physically fit the larger diameter (more teeth) low range gear.
I think you want, and it makes sense to me too, LOWER gears for both the high and low ranges. In other words a much lower low range (4:1) and a slightly lower high range (1.2:1) .
The problem seems to be the physical space in the case when making both gears larger. So I think you may need a new -larger- case too.
How about an underdrive box in front of the transfer case, where the adapter now sits. Say a 20%.
Space? fuel tank, thats the same issue as having a crawler box in there.......
A 4.1 transfer seems the easiest choice, but as Christo said the cruiser transfer with auto is a good all around system, with a crawler box you will be shifting in and out of high/low alot more between tough spots on trails vs staying in low in the current combo. made sense to me
Hanna Quality
Supporting Vendor
the smoke is clearing...now thanks PJ
The Samurai guys have gear options LOW RANGE OFFROAD
Gear Set
A 4.16:1 Gears
B 4.9:1 Gears
C 6.4:1 Gears
D 6.5:1 Gears
Low Range Reduction
A 84%
B 115%
C 181%
D 187%
High Range Reduction
A 12%
B 16%
C 17%
D 20%
The numbers above show the lowest low range ratio is labeled D at 6.5:1 (higher ratio) and has a high range reduction labeled also D of 20%
The low range goes up in gear ratio while the high range goes down in ratio and it seams that is how the gears fit in a stock case...I believe that is how a higher gear ratio for low range would be acheived in a 80 case and at the same time gain a lower ratio for the high range...the best of both worlds.
The Samurai guys have gear options LOW RANGE OFFROAD
Gear Set
A 4.16:1 Gears
B 4.9:1 Gears
C 6.4:1 Gears
D 6.5:1 Gears
Low Range Reduction
A 84%
B 115%
C 181%
D 187%
High Range Reduction
A 12%
B 16%
C 17%
D 20%
The numbers above show the lowest low range ratio is labeled D at 6.5:1 (higher ratio) and has a high range reduction labeled also D of 20%
The low range goes up in gear ratio while the high range goes down in ratio and it seams that is how the gears fit in a stock case...I believe that is how a higher gear ratio for low range would be acheived in a 80 case and at the same time gain a lower ratio for the high range...the best of both worlds.
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Ken, the Sami gears/trans cases are SO affordable. If the 80 cases were that reasonable I'd have bought two by now. I am still considering a Marks box and running an aux tank as my primary and ditching the stock gas tank.
Hanna Quality
Supporting Vendor
affordable gears might happen...someone has to make them as more and more 80s are get modified further and further
It looks like Low Range has a Land Crusier page in the works. Hopefully it will include the 80 serries. Those prices are cheap.
I was reading through the thread and although I think I am missing something here I have to ask: Is the only reason that more people are not installing the Marks gears in the t-case the installation difficulty and the poor customer service from the manufacturer? It seems like more people would run these gears despite the fact they are not as low as an orion or an atlas could provide.
I believe the price and the annoying logistics of importing these gears are the primary problem people are having. Look at the suzuki sumurai or toyota mini-truck low-range gearsets. They are a third the price or less and stateside availability is no problem. I know my problem is price (initial purchase price, then shipping, then having to wait for them).
