I am not real smart on this stuff so hopefully someone can help me out. I have a 2005 CRD with selec trac and Trac lok (I know trac lok is a LSD and Selec-trac is the 4 full time option). My question is if I were to add a locker to the front or the rear how does that affect the selec trac when it is engaged? and does it matter if I choose a selectable Locker? Thanks

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2005 Liberty CRD, 245/75R16, OME CRD Springs front, OME HD rear

With a locker in the front - when it's locked - you can't turn very well. Both wheels are going to go the same number of revolutions even if they're pointed sideways. Therefore - front should be either limited slip or selectable i.e. ARB type. I put a limited slip a Truetrac in mine - (works great on icy roads - haven't been offroad yet) but you can feel the Truetrac working a lot when you're in 4 wheel drive and to some degree even when you're in 2 wheel drive.

I don't know about the Trac-lok in the rear - from what I've heard they're good - but not as effective as the aftermarket (Auburn, Truetrack) and they'll wear out the clutches - the Power-Trax Locker seems to be either loved or hated on-road- depending on who you talk to but universally loved off-road and the selectable ARB would be great and of course - the most expensive.

Edit: Oops.. I was thinking Power-Trax locker - but I typed Select-trac. Wrong and confusing - Power-Trax is a locker for the rear - Select is the transfer case - that allows full time 4wheel drive. corrected, sorry about that.

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2005 CRD
stuff
Skeptic quod gratis asseritur, gratis negatur

I am not sure if we are talking the same Selec-trac (if we are then I am really confused). I am refering to the 242 part/full-time transfer case and I am wondering how adding a new front locker or changing the trac loc locker out will affect the way Selec-trac works?

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2005 Liberty CRD, 245/75R16, OME CRD Springs front, OME HD rear

Lockers do not affect how your transfer case works (mechanically speaking). Depending on the locker you choose they can affect steering and handling characteristics, however. Not necessarily in a bad way...just different. With selectable lockers (like ARB) this is not a concern as you can lock them up when need and leave your diffs open the rest of the time.

So I think I understand now. Selec-trac locks or unlocks the center differential which controls the power to the front or rear. A rear or front locker will control how the wheels spin when the power gets to the front or rear?

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2005 Liberty CRD, 245/75R16, OME CRD Springs front, OME HD rear

You got it.

Cool. Thanks for all the help.

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2005 Liberty CRD, 245/75R16, OME CRD Springs front, OME HD rear

A locker/LSD will only affect wheel spin in the axle it is housed in. I have the Select-Trac, too, and have wondered how a locker/LSD would act in full-time, especially in the front. We definitely benefit from full-time in road/off-road situations where there IS quite a bit of traction and/or a lot of sharp turning, and getting a fully selectable locker like an ARB I think would defeat the full-time option, since you wouldn't really be able to turn the front if it was locked with the ARB in situations with a good amount of traction. The point of the full-time option is to be able to manueaver without the resistance that might be found in part-time in that same given situation. I think that's why going for an LSD like Detroit Tru-Trac in the front is probably a good idea, since it's not an "on or off" thing. I think a few KJers would agree with me that one of the more optimal set-ups would be the Detroict Tru-Trac up front and an ARB in the rear. I'm definitely getting the Tru-Trac, but I might try getting something cheaper for the rear axle.

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2003 Limited, Silver - L.O.S.T. # 068957 Rockies
http://www.cardomain.com/ride/2127390/14
2006 Kawasaki KLR650