What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

olija

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What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« on: February 10, 2008, 12:00:36 PM »

So, I think I've made up my mind on what I want to do in terms of re-gearing my Sidekick. Since my tranny (5 speed) seems to be on its last legs, I'm just going to get a 2WD Sidekick transmission and bolt it up and mount a Samurai transfer case behind it. I really like the idea of having a high range reduction. And also the fact that there are more options for gearing for Sammy t-cases. Anyway, for those that know, I just want to figure out exactly what I need to do in order to make this work. I've done some research and I know the tranny bolts up to the engine just fine, but it will require a custom crossmember. That's ok, I work at a metal shop.

The main thing is, do I need to fab up a custom jackshaft between the tranny and t-case? And do I need to run a custom rear driveshaft as well? I'm thinking not, but I just want to make sure before I do anything.

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trailturd

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #1 on: February 10, 2008, 03:33:45 PM »

Your going to have to make a jack shaft, front and rear drive shafts and mounts to mount in a sammi case. Also cut the tunnel for the shifter.

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olija

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #2 on: February 10, 2008, 06:27:15 PM »

So I can't just use the jackshaft that a Samurai uses between a Samurai tranny and t-case? And the front and rear driveshafts won't be the right lengths either?

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97 Sidekick 4door 5 speed, 1.5 spacer lift, 2" body lift, CJ rims, locked rear, 31's, 4:1 low <SOLD>
01 Vitara 2.0L 5 speed, 2.5" Calmini lift, 2" body lift, Sidekick rims, locked rear, 31's, 4:1 low, 5.13 diffs <SOLD>
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Drone637

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #3 on: February 10, 2008, 09:41:04 PM »

I believe the outputs for the Sammy Jack Shaft has a different spline. But if you take the 2wd drive line and the jack shaft to a drive line shop and they should be able to fab it together for you. Then it is just measuring and mounting.

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Rhinoman

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #4 on: February 11, 2008, 04:48:48 AM »

The high range reduction is quite significant. If its a daily driver then it may be too low on 30s. It would be OK on 33s. IIRC the gearing options all reduce the high range further so you would need 35s+

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jplowman2005

Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #5 on: February 11, 2008, 12:21:35 PM »

anyone know of any good links for making a custom crossmember...im kinda in the same situation but im limited with my tools so im trying to figure everything out before i swap it in...bump

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Skyhiranger

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #6 on: February 11, 2008, 02:40:14 PM »

A trackick 2wd tranny output shaft is the same spline count as a samurai tranny output shaft (therefore a samurai intermediate shaft will fit, and you will need to use a different seal, since the trackick slip yoke is bigger diameter than the samurai one). Or you can swap the slip yoke portion of a 2wd trackick driveshaft onto a samurai intermediate shaft (all the samurai and trackick driveshafts use the same ujoints).
I haven't ever measured, but I would assume you will not be able to mount a samurai tcase in the correct position to be able to use the trackick driveshafts without having to modify at least one of them.
Remember that trackick tcases use slip yokes on the tcase ends of the driveshafts and samurais use flanges on the tcase end of the driveshafts......but also remember that they all use the same ujoints, so you can mix and match driveshafts and driveshaft ends to make what you need....but the driveshafts may still need to be modified for length.
Also remember that a samurai tcase rear output does not come straight out the back of the case (in line with the tranny and rear third)....so you will have a compound angle rear driveshaft.
Easiest thing to do for a crossmember is to find a factory 2wd one. It uses the same mounts as a 4wd one does.
As stated, if you change the tcase gears in the samurai tcase, it will also lower high range (unlike the trackick gears that only change the low range ratio). A stock samurai tcase has a high range reduction of 1.409:1......where a trackick tcase is 1:1.

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olija

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #7 on: February 11, 2008, 06:39:55 PM »

Without putting crawler gears in it, shouldn't that be perfect with 31's then? I'm just trying to find the best option here and I thought that the high range reduction would make up for the lack of power during on-road driving. I've thought about putting my Kick on 33's but I have seen someone else attempt it with a 4 door with the Calmini 6" combo and the tires were just eating the fenders for breakfast, lunch, and dinner. I also don't want to deal with the front end blowing up on every trail ride.

« Last Edit: February 11, 2008, 06:58:47 PM by olija »

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97 Sidekick 4door 5 speed, 1.5 spacer lift, 2" body lift, CJ rims, locked rear, 31's, 4:1 low <SOLD>
01 Vitara 2.0L 5 speed, 2.5" Calmini lift, 2" body lift, Sidekick rims, locked rear, 31's, 4:1 low, 5.13 diffs <SOLD>
03 XL7 2.7 5 speed, 4.5" AE lift with OME springs, 2" AE body lift, 5.13 diffs, 3:1 low, 235/80R17 BFG AT's on Ultra 17x8 with 1" spacers, skid plates, Balmer Fab front bumper

Skyhiranger

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #8 on: February 11, 2008, 08:21:19 PM »

According to my calculations......
With 5.125 gears, 5 speed tranny, true 31" tires (yours probably won't measure 31" tall, so you RPMs will be slightly higher than what I have posted below at the same given speed) and a samurai tcase with a stock 1.409:1 high range, your RPMS will be.....
4039 |removethispart|@ 60MPH
4712 |removethispart|@ 70MPH
if you have a trackick with an 8V engine (.86 5th gear ratio in the tranny).
and...
3733 |removethispart|@ 60MPH
4356 |removethispart|@ 70MPH
if you have a trackick with a 16V engine (.795 5th gear ratio in the tranny).

So I guess the question is.....is that where you want to be?

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #9 on: February 12, 2008, 05:27:08 AM »

Quote from: Skyhiranger on February 11, 2008, 02:40:14 PM

Also remember that a samurai tcase rear output does not come straight out the back of the case (in line with the tranny and rear third)....so you will have a compound angle rear driveshaft.

X2. Expect vibes. Best thing would be a customs offset rear housing (dunno who would make such a thing), or a Sammy rear axle with wheel spacers.

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idaholwb

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #10 on: February 12, 2008, 11:01:28 AM »

With the length and shallow angle the rear driveline would be, there would be none or very little vibration from u-joint angle issues. If he were running 10" of suspension lift and had the Sami t-case far enough back to use the stock length intermediate driveline he might have issues. But not with such a small amount of lift with a short intermediate with both u-joints on it.

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olija

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #11 on: February 12, 2008, 07:59:06 PM »

Quote

3733 |removethispart|@ 60MPH
4356 |removethispart|@ 70MPH
if you have a trackick with a 16V engine (.795 5th gear ratio in the tranny).

That's about the same as stock, is it not? I don't really remember on mine because I moved up to 235's after a month but I remember doing about 120 km/h (70 MPH) it would rev at 4000 rpm. I guess I could always move up to 33's but that is going to be ALOT more work, and I don't think they will fit very good on my 4 door. There's no room to hack the fenders in the back.

Quote from: idaholwb on February 12, 2008, 11:01:28 AM

With the length and shallow angle the rear driveline would be, there would be none or very little vibration from u-joint angle issues. If he were running 10" of suspension lift and had the Sami t-case far enough back to use the stock length intermediate driveline he might have issues. But not with such a small amount of lift with a short intermediate with both u-joints on it.

I was also thinking that because mine is a 4 door the driveshaft angle shouldn't be an issue. I'm only running 1.5" of suspension lift and MAY be pumping it up to 2" but I doubt that will affect it harshly.

I'm really having a hard time making up my mind. There's a guy in town who will have a 2WD 5-speed, Sammy transfer case, and a shortened intermediate shaft ready to sell in a few weeks. I'm just trying to figure out if I should go that route or just order Trail Tough's 4.24:1 gears. I only want to do this once...

Thanks for all the advice so far guys, keep it coming.

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97 Sidekick 4door 5 speed, 1.5 spacer lift, 2" body lift, CJ rims, locked rear, 31's, 4:1 low <SOLD>
01 Vitara 2.0L 5 speed, 2.5" Calmini lift, 2" body lift, Sidekick rims, locked rear, 31's, 4:1 low, 5.13 diffs <SOLD>
03 XL7 2.7 5 speed, 4.5" AE lift with OME springs, 2" AE body lift, 5.13 diffs, 3:1 low, 235/80R17 BFG AT's on Ultra 17x8 with 1" spacers, skid plates, Balmer Fab front bumper

trailturd

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #12 on: February 12, 2008, 08:38:14 PM »

I also have a 4 door with a sidekick case and a sammi case. I am running a centered toy rear axle with yj springs and the vibes are minor. I think that the 37" tires cause more vibaration than the driveshaft does. I mounted my sammi case with a trailtough mighty kong and welded mount brackets to the frame.

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olija

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #13 on: February 12, 2008, 08:51:01 PM »

I'm not really looking to run 37" tires though. I want it be able to crawl good with 31 to 33" tires.

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97 Sidekick 4door 5 speed, 1.5 spacer lift, 2" body lift, CJ rims, locked rear, 31's, 4:1 low <SOLD>
01 Vitara 2.0L 5 speed, 2.5" Calmini lift, 2" body lift, Sidekick rims, locked rear, 31's, 4:1 low, 5.13 diffs <SOLD>
03 XL7 2.7 5 speed, 4.5" AE lift with OME springs, 2" AE body lift, 5.13 diffs, 3:1 low, 235/80R17 BFG AT's on Ultra 17x8 with 1" spacers, skid plates, Balmer Fab front bumper

Skyhiranger

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Re: What exactly is required to put a Sammy T-Case behind 2WD Kick Tranny?

« Reply #14 on: February 13, 2008, 06:52:59 AM »

Quote from: olija on February 12, 2008, 07:59:06 PM

Quote
3733 |removethispart|@ 60MPH
4356 |removethispart|@ 70MPH
if you have a trackick with a 16V engine (.795 5th gear ratio in the tranny).

That's about the same as stock, is it not? I don't really remember on mine because I moved up to 235's after a month but I remember doing about 120 km/h (70 MPH) it would rev at 4000 rpm. I guess I could always move up to 33's but that is going to be ALOT more work, and I don't think they will fit very good on my 4 door. There's no room to hack the fenders in the back.

I think those numbers are about 500RPM higher than with a stock setup.

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