Transfer case ???
#3
Pretty sure there's a different spline count on the input shaft on the transfer case for those two. More info here:
http://www.4x4wire.com/toyota/faq/parts/
http://www.4x4wire.com/toyota/faq/parts/
#6
The V6 T-case has 0 gear change options.
As far as I know the only optional item for a V6 case is a twin stick ($200 from Marlin)
There was in the works a not so cost affective dual (4cyl+6cyl) case adapter but I don't think they have finished it yet (posted on the Marlin Boards).
The 4cyl T-case has quiet a few options as far as gearing but 4.7 to 1 is the most common (2.28 to 1 is stock).
You have Dual case adapters made for the 4cyl T-case.
You also have 21 and 23 spline gear sets and input shafts available.
There are a few makers of twin stick kits for the 4cyl case (Marlin,Skys,etc...)
#7
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#8
I think that's debateable. Marlin indeed now has an adapter to put a crawl box in front of the chain drive case (MC10). Both Marlin and Inchworm have been doing it A LONG TIME with the chain drive Taco cases, holding up to WAY more power than a 22RE or 3VZE will EVER make.
#9
I cannot find the chain drive dual adapter on marlins site (MC-10 as the R-10 is a 10* gear adapter). I can find the R+D thread started 2004 with the expected price of $649!! for a dual case adapter.
here is exactly what marlin has to say about the chain VS gear comparison.
# Benefits of a Gear Drive Transfercase: Multiple Housings
# Stronger Gears (no chain stretch)
# Stronger Bearings
# Stronger Case Design
# 21- or 23-spline Input Gear
# Unbreakable 23-spline input gear
# No Oil Pump Required
# Fewer Moving Parts
# Accepts Marlin Crawler Gears
# Accepts Marlin Crawler Dual Cases
# Can be located in most recycling yards
Benefits of a Chain Drive Transfercase:
# Shift into 4WD at speeds up to 50 MPH
# Weighs Less
# Lower Stock Low Range (2.57)
Marlins take on the chain VS gear
You can tout how much power a chain taco case can take but you put a 4.7 to 1 crawl box in front of it and now you have 22r or 3.0 power multiplied x4.7 and in this case I'm sure the chain case falls short.
avg 3.0 makes lets say conservatively 150 ft/lb of Tq? (rated at 180ft/lb's but most are old motors) and yes we are talking about crank HP we have no need for wheel hp on this topic
150x4.7=705 ft/lbs of Torque?
Now add the low range of the chain box as well since all gear reduction is done before the power is delivered through the chain to the front drive shaft.
705x2.57=1811 ft/lbs of Torque
Granted these numbers are absolutes but in the world of rock crawling and dual cases they usually deal in worst case situations due to lack of better judgment (AKA... Lead Foot syndrome)
so In response to "I think that's debateable." I would venture to say its not.
Edit... The only reason I can come up with for a taco chain drive case adapter is because of the drivers side T-case output where a gear drive case is not possible. If Toyota had offered a Gear drive case with a driver side output I'm sure there would be zero talk or use of a Taco Chain case used in any dual kits.
Last edited by Ganoid; Dec 14, 2006 at 11:34 PM.
#10
# Benefits of a Gear Drive Transfercase: Multiple Housings
# Stronger Gears (no chain stretch)
# Stronger Bearings
# Stronger Case Design
# 21- or 23-spline Input Gear
# Unbreakable 23-spline input gear
# No Oil Pump Required
# Fewer Moving Parts
# Accepts Marlin Crawler Gears
# Accepts Marlin Crawler Dual Cases
# Can be located in most recycling yards
# Stronger Gears (no chain stretch)
# Stronger Bearings
# Stronger Case Design
# 21- or 23-spline Input Gear
# Unbreakable 23-spline input gear
# No Oil Pump Required
# Fewer Moving Parts
# Accepts Marlin Crawler Gears
# Accepts Marlin Crawler Dual Cases
# Can be located in most recycling yards
OK
maybe, but doubt it's significant
maybe, but wonder how significant
chain drive is 23 spline behind a R series transmission
Same - 23 spline for R- series transmission
Already in there as it comes stock
I guess if you count each link in the chain a moving part
Duh - so they can make more money off ya
That wouldn't necessarily be true
So could chain drive with the right adapter - what's the point?
You can tout how much power a chain taco case can take but you put a 4.7 to 1 crawl box in front of it and now you have 22r or 3.0 power multiplied x4.7 and in this case I'm sure the chain case falls short.
avg 3.0 makes lets say conservatively 150 ft/lb of Tq? (rated at 180ft/lb's but most are old motors) and yes we are talking about crank HP we have no need for wheel hp on this topic
150x4.7=705 ft/lbs of Torque?
Now add the low range of the chain box as well since all gear reduction is done before the power is delivered through the chain to the front drive shaft.
705x2.57=1811 ft/lbs of Torque
Granted these numbers are absolutes but in the world of rock crawling and dual cases they usually deal in worst case situations due to lack of better judgment (AKA... Lead Foot syndrome)
avg 3.0 makes lets say conservatively 150 ft/lb of Tq? (rated at 180ft/lb's but most are old motors) and yes we are talking about crank HP we have no need for wheel hp on this topic
150x4.7=705 ft/lbs of Torque?
Now add the low range of the chain box as well since all gear reduction is done before the power is delivered through the chain to the front drive shaft.
705x2.57=1811 ft/lbs of Torque
Granted these numbers are absolutes but in the world of rock crawling and dual cases they usually deal in worst case situations due to lack of better judgment (AKA... Lead Foot syndrome)
200x4.7x2.57 = 2416 ft-lbs!
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