Where can I buy new viscous coupling for transfer case?

[carnuck]

'84 to '86 and 4 cyl with 3 speed automatics had NP229s and NP228s till '89.

[priya]

why not pull a tcase out of a Cherokee

I don't think there was an NP119 in a Cherokee but I certainly could be wrong.  As well, I want to know for sure I've got a good viscous coupling rather than buying a questionable used one.

[carnuck]

why not pull a tcase out of a Cherokee

I don't think there was an NP119 in a Cherokee but I certainly could be wrong.  As well, I want to know for sure I've got a good viscous coupling rather than buying a questionable used one.

They did use NP229 and NP228 till late '86 which will bolt in place of the NP119, 129 or 128.

[priya]

I've already ordered and paid for a viscous coupling and bearing kit for NP119.

[captspillane]

They all use the same viscous coupler and bearings. The 119 is a 229 with the low range junk omitted in the forward part of the case. From the front edge of the chain rearward everything is exactly the same (An exception being the same tailshaft casting is drilled and clocked differently). Its even relatively simple to add a low range to a 119 if you have the important parts from a donor 229. Likewise its just as simple to make a 119 into 129. The difference between those two is also located forward of the chain where the low range hardware should be.

The SX4 prototype actually had a 229 in it from the designers. The floor pan was designed to accept the same floor shifter as a J truck. I'd love to see someone replicate that intended design in an Eagle.

[carnuck]

That's how Cam Brown did his.

[DaemonForce]

Here is an idea of what i'm doing tomorrow.

I'm going to be so happy when I reach that point with a NP229 next month.

[mudkicker715]

It has been finished for a long time
 http://forums.amceaglenest.com/index.php?topic=36885.0

[milliard431]

I've already ordered and paid for a viscous coupling and bearing kit for NP119.

I thought all of the SX4s were select drive although I know that the all wheel drive 119 carried over into early 81 Eagle models.

[captspillane]

No, not all of the SX4s were select drive. I've got two that are not.

[IowaEagle]

Select drive was not offered in early '81.  AMC really did not like federally mandated model years.  They really wanted their model years to follow the calendar year.  The Select Shift was a mid-year model addition (around January).  Roy Lunn was adamantly against select shift.  The EPA and upper management prevailed. 

[milliard431]

After rereading this entire post I have come to the conclusion that some of you are perverbial rocket scientists of transmissions and i must be one of those part changer mechanics that someone mentioned. So now that Priya has sourced a VC I just want to know if i should just assume that my 1980 119 needs a new VC due to age although it only has 56,000 on the clock and has never seen snow or mud use? I will do that test that mudkicker mentioned with the torque wrench anyway. I checked that Midwesttransmission site and I only found the entire NP 119

[priya]

After rereading this entire post I have come to the conclusion that some of you are perverbial rocket scientists of transmissions and i must be one of those part changer mechanics that someone mentioned. So now that Priya has sourced a VC I just want to know if i should just assume that my 1980 119 needs a new VC due to age although it only has 56,000 on the clock and has never seen snow or mud use? I will do that test that mudkicker mentioned with the torque wrench anyway. I checked that Midwesttransmission site and I only found the entire NP 119

I don't think it would be a good idea to assume, do the test and make your decision based on that.

[carnuck]

The VC is a go or no go item. If it doesn't work, the Eagle won't drive if you have NP119. You could also swap to a NP219 and get low range and E-drive as an added benefit.

[captspillane]

The VC is a go or no go item. If it doesn't work, the Eagle won't drive if you have NP119.

That's not true. The car drives perfectly fine with a bad Viscous Coupler. There is no noticeable difference. The viscous coupler doesn't do much at all when the car is moving because you have a natural torque split between wheels without it thanks to approximately equal wheel resistance.

It has less effect on the performance of the car than a positraction rear. Most people will never have a problem without one.

Make sure you change your fluid. If the viscous coupler gasket fails it empties a sandy thick fluid into the case and it can cause damage to it by displacing the oil where it is needed.