Xterra/Frontier transfer case vs. Patrol transfer case

[gorillamel]

So I have been doing some research, but I am finding it difficult to find much information on the Nissan Patrol transfer case. I know that the X, Frontier and Titan have the TX-15 (most recent models; Gen I X's have TX-10s).

I own a 2005 Xterra (auto) and wondering if its transfer case (TX-15) is interchangeable with a likewise Patrol t-case. I am assuming I would have to look at the Y61 petrol model (correct me if I am wrong). Does anyone know what the model number of their Patrol t-case is?

I found a diagram of my t-case:

And am trying to find a diagram of the Patrol t-case.

My reason for asking is that I am trying to re-gear my t-case, but no after market gears exist for my Xterra (Gen II, 2005-onward). So my options are married t-cases (which I have not found), divorced t-cases (np205), swapping out my t-case w/ another different one (no adapters available), or make gears for my t-case (I found a manufacturer willing to do this, but wants to know about the Patrol t-case to market to more vehicles).

 

[skibum315]

I don't think there are Patrol cases that are *that* interchangeable with the Xterra case (as to be able to use the same internals) ... Advanced Adapters has a plate to mate the Atlas to the AT in our trucks, but it's spendy and then you have to buy an Atlas ... but it is one way to go (you probably knew that, though).

I know that some models of Patrol used the TX-12 ... which I think is closer to the TX-10 than it is to our case. The TX-10 has an NWF adapter to run a D-300 range box on it ... but again, kinda spendy; and you have to figure out how keep the 2nd gen computers happy if you go to the older gen primary box.

Shoot a PM to RMP&O (Ian) he's the resident Patrol guru here stateside - and somewhat local to you, in Jackson WY ... also consider talking it through with Steven from Rugged Rocks, he may have some thoughts for you ... I know he's done some work on cross compatibility of Patrol parts to the 1st gen X/Frontier platform, but I don't know if he's looked into any 2nd gen compatibility. I also know there are several members from abroad who are quite familiar with the Patrol, so hopefully they might share some insight, too.

I'll be keeping an eye on this ... I think it's a great idea. I wouldn't mind having a range box for our t-case ... don't know if I'd want a dedicated lower low-range (like you'd get by just having deeper t-case gears installed), though ... the 2.63:1 is a good compromise ratio, IMO; but the ability to occasionally multiply it further would be nice.

 

[gorillamel]

Thanks for the Patrol Pres reference. I will send him a PM.

Steven was actually the one that suggested I ask Patrol owners to get info for him (hence this thread). Here is my original post on XN: http://www.xterranation.org/showthread.php?4074-Gen-I-t-case-vs.-Gen-II-t-case. He is interested in seeing the cross-compatibility of Patrols w/ Gen IIs, as am I, obviously, haha!

You are correct, I looked at Advance Adapters/Atlas. It is a bit more spendy than I'd like to shovel out.

I asked some Gen I X's the possibility of swapping t-cases and that sounds like it is not too feasible either. Silver Dude is a font of useful information on that one.

I'll continue researching and posting on here when I learn more.

 

[skibum315]

Just read through that XN thread ... I think actually a good option might be to look into an adapter to run the (*gasp*) Toyota gear driven case, or another readily available similar t-case. That one has been proven pretty dang stout, and there are adapters out there to run them doubled ... and there are deeper gears, too.

For the cost of the 1st run gears ... I have to wonder if there might be a 'better' solution. The problem with our 2nd gen case, is that it's a split housing ... so the range box and front PTO can't be separated the way that they can on boxes (like the geared Toy case) where they're effectively two separate units. For a chain driven case, though, our t-cases are pretty stout ... we haven't seen too many guys (can't actually think of any specific ones, offhand) on NewX who have blown one up ... and I have to think that with the way some of those guys try and pound through rock gardens when they wheel, that we'd have heard about it if it were happening to any significant degree.

 

[zukrider]

Creek replaced one, though i dont know why.

the talk on a toy case is a good start, but i think it would work well to use a lowrange doubler feeding our 2nd gen case. OR, an NP203 as a doubler would be cool. both would require an adapter front and rear. honestly i think the 203 is a better option due to only being a 2:1. the lesser added input torque will help to save on breakage.

im sub'd to this though! having come from a well geared Sami, im missing my crawl control!

P.S. im a 6 speed, so whomever is building, think of me too!

 

[gorillamel]

Well, just for shiggles and gits, I called my local Nissan dealerships to see if they had any knowledge of Patrols. The first dealership was a bust, having no clue was a Patrol even was. The second one had actually serviced one a few months back and got my info saying they would look into my t-case question. Personally, I think the parts guy was just interested in my project more than anything and wants to help. Ha, I'm game either way.

Yeah, I like the idea of the Toyota t-case in there. Maybe even swapping it out with mine. But I would still need to fab up an adapter to make it fit. I know I can re-gear the toyota t-case and have all the paperwork/manuals on how to do if I get the gears.

Bah! So many ideas! Now I just need to figure out how feasible each one is. I am leaning more away from the divorced t-case simply b/c of our already short driveshaft.

I'll send John a FB message to see what he did with his t-case. Thanks for the heads up.

 

[skibum315]

P.S. im a 6 speed, so whomever is building, think of me too!

Ditto!!

 

[Allof75]

I wonder, could you possibly swap in a V8 Pathfinder or Titan case? If that may be stronger...

 

[gorillamel]

Titan is the same-ish I think. I'm not looking for strength, but the ability to re-gear the t-case. Currently there are no re-gear options for Gen II Frontiers/Xterras. Poop.

I put in a note to a fabricator to ask if he can fab up an adapter plate so I can swap mine out with the 'Yota.

 

[skibum315]

I put in a note to a fabricator to ask if he can fab up an adapter plate so I can swap mine out with the 'Yota.

Keep in mind that its not just a matter of getting the new case to bolt up, but that the t-case input & trans output have to match up as well ... you need to have the male/female expectations be in agreement (sounds more like a dating issue, I know ... =P), as well as the diameters & spline counts.

There is a slight gear ratio difference on the Titan/Pathy cases ... so there may be some differences there; but IIRC, at least the Pathy case has an AWD setting, so the difference may just be that there's a viscous setting in addition to the 'fully locked'/true part-time that we have in the Xterra case.

 

[skibum315]

Mel, I don't know why this didn't click earlier ... but it's worth looking into the applicability/commonality of the Atlas mounting pattern. I seem to recall that there are many t-cases out there that use the same circular interface. If that's the case, then the Atlas adapter should also work for those other cases as well ... might be worth a call to the folks at Advanced Adapters, or a conversation with someone who really knows their t-cases.

http://www.advanceadapters.com/prod...nsmission-to-atlas-transfer-case-adapter-kit/ ... that's the adapter plate, and it's less expensive than I was thinking of, maybe the $$$ cost I had in my head was for the Atlas box as well (I know those are pricey). If there's another t-case out there that shares the same mounting interface, preferably one that was OE on a domestic 4x4 (like a D-300 or one of the NP/NV cases out of later Jeeps); then it's just a matter of getting the input shaft to match up ... and since Atlas has a matching input shaft, I have hope for that, too.

The final hurdle would be keeping the electronics happy, but that's something I wouldn't worry about until there's a mechanically functional solution.

 

[gorillamel]

That, Sir, is an excellent idea! I will look into this. I did look at the Atlas (and thus the adapter) itself but cringed at the base price of it. I did not think to just use the adapter plate w/o the Atlas. Hmmm, you may be on to something here...

This will involve more research on my part. The fabricator I use is moving shop and not available till next month (and I'm going to be out of town till then anyway). So this project will temporarily be on hold. I shally keep you updated on it. Thanks!

 

[NmexMAX]

Pathfinder T-case is the same as yours, V8 or not. (~2.6:1), as is the Titan and Armada. The V8 with auto mode has 2 xfer cases, the ATX14B and the TX15B. The former for auto, the latter for lo range.

So, in other words, I'm subbing this thread too.

Good to know I'm not the only one wanting to do something like this.

 

[gorillamel]

Thanks for the info!

Now if we could only get the Patrol people to respond.

 

[jarmentrout]

3 or 3.5:1 low range would be nice with the manual.

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