Pearl's rcsb awd turbo build!
#16
TECH Fanatic
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The NVG-149 came factory installed in the 2001-2002 Yukon Denali, 2002 Escalade, 2001 GMC C³, 2002-2007 Classic Sierra Denali and 2003-2005 ½ Silverado SS AWD models, so you have a pretty wide range of source vehicles, but still they are a small percentage compared to the remainder of the GM truck and SUV line and are getting somewhat long in the tooth. Due to their age, you could easily unknowingly pick up a damaged unit. The two most common failure points appear to be a damaged viscous coupler (unit that was run in hump mode too long and overheated) and the all too common damage to the rear case halve from oil pump wear. The rear case being cut by the oil pump is a problem in just about all the magnesium cased NVG transfer cases and not just the AWD units and there are new case halves available, as well as remedies to keep it from happening in the 1st place. The replacement case halves I’ve seen on the market have been aluminum instead of the magnesium, which would make any repairs that may be necessary in the future easier. The viscous coupler would be my biggest worry, as they are non-serviceable, but there are remanufactured units available. A sign of a bad viscous coupler would be a unit that is no longer allowing the torque to be split properly and causing binding. Of course if you needed to open up the unit, it would also be a handy time to drop in a fresh chain, as most undoubtedly it would be stretched somewhat by now. One more somewhat common failure area if you could call it that towards most of the GM transfer-cases is the rear bushing. I would just inspect it and the rear seal before installing the unit, especially if you see evidence of a leaking rear seal.
#18
Formerly PurplePearl (2014-04-06)
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20131207_181104.jpg?t=1386531042
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Got the escalade torn apart this weekend. Planning on working on the rcxb next weekend.
Updated Plans
Shooting for 10-12lbs Want to bump it up on the track
LQ9
kb s475 or trick stage 3 kit
ARP Head Studs
nnbs/tbss intake (worth it?)
Isky triple 12 cam
Springs (Do i need some with this cam?)
E Fans
Fuel (unknown)
Injectors (unknown)
4l80e
Shift kit
3200 Stall
Tcase
Might keep the borgwarner until it breaks. Anyone know what kind of power the are holding to?
20131207_181115.jpg?t=1386531035
20131207_181104.jpg?t=1386531042
20131208_121435.jpg?t=1386531009
Got the escalade torn apart this weekend. Planning on working on the rcxb next weekend.
Updated Plans
Shooting for 10-12lbs Want to bump it up on the track
LQ9
kb s475 or trick stage 3 kit
ARP Head Studs
nnbs/tbss intake (worth it?)
Isky triple 12 cam
Springs (Do i need some with this cam?)
E Fans
Fuel (unknown)
Injectors (unknown)
4l80e
Shift kit
3200 Stall
Tcase
Might keep the borgwarner until it breaks. Anyone know what kind of power the are holding to?