[Amc-list] SIX SPEED STICK =NSG-370= swap in

[Brien Tourville <hh7x@xxxxxxxxxxx>]

RubiconRick posted this here : 

http://tinyurl.com/22sghr




Read more here:

http://tinyurl.com/283ol2

http://tinyurl.com/2ogfx3





=Quote=


Having already put the Jeep/Mercedes NSG-370 6 speed manual into two pre 
2000 TJ's, I have some advice you may wish to read.

All you need is to get the crank angle sensor re-location kit from a 
supplier like Advanced Adapters with the new harmonic balancer included.

This kit will pickup from the front of the crank instead of the rear 
bell housing and mounts to the oil pan/timing cover bolts.

It even comes with a wiring harness extension for your old crank angle 
sensor pigtail and includes a new plug to match. Make sure you have the 
backup lamp switch plug with pigtail wiring stubs included when you buy 
a used NSG-370.

This way you can easily splice  into where the old backup switch plug 
was and it will plug in perfectly. One of the converted TJ's had a 3 
speed automatic, the other had the AX-15 5 speed. You will need to 
modify the shift lever if you don't want it hitting the front of the 
center console or center stack bezel and your knuckles to impact the 
dash on forward shifts.

This mod is easy to do. Just cut off the attachment sleeve from the 
stick at the weld where it slips over the trans shift "stub" and re-weld 
it on the back side instead of the front side where it's at in stock 
form. Hydraulic slave cylinder connections are the same as those on the 
AX-15's and NV-3550's so you're basically DONE!


The NSG-370 drops right in behind the 4.0L with the original or 6 speed 
flywheel.


The NP-231J or the NV-241OR "Rock-Track" Rubicon transfer cases will 
mate right to it.


We had Nth Degree Mobility tummy tuckers with 1" raised motor mounts and 
the 5 speed rear trans mount bracket Nth Degree supplied for the AX-15 
or NV-3550 fit the new 6 speed perfectly. It's nice to have a deep 
4.46:1 1st gear combined with a 4:1 transfer case for crawling action. 
Another benefit is the extra ratio before going into 1:1, (where 4th 
gear used to be in the 5 speed box). Especially when pulling steep long 
grades in summertime heat.

Noted positive changes: The engine runs much cooler and stays in its 
optimal power band. Now with big oversize tires on steep grades and when 
fully loaded for a week of camping/trail running, the jeep has improved 
midrange pulling power. The swap also helped boost our overall crawl 
ratio from 78:1 to an almost 90:1 with the lower 1st gear.

The Jury may still be out on the long term durability of this 
transmission with big tires and hard trail use, but for us there were 
definite benefits in a 6 speed steed swap. Oh Yeah! 










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