Part Time Kit

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Vanny

Vanny

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Joined
Jan 12, 2006
Threads
164
Messages
1,226
Location
Ladner, BC, Canada
Website
www.lentelconstruction.com
On Saturday a friend helped me install the Slee part time 4WD kit (I was more like an assistant). I really enjoyed the job. Found it really interesting. I noticed the stearing is a lot easier and the braking is under my control again (no ABS in 2WD). I won't know if the gas mileage is any better until I average it out over a couple of months. I will post a few pics later.

For those of you who were wondering before, the front drive shaft does not turn in 2WD. The viscous coupler is now just a spacer in the transfer case. The new spool does not turn the viscous coupler. It just rests against it with a nylon spacer. To engage the 4WD the hubs need to be locked and the Center Dif Lock switch has to be engaged. When the hubs are locked the ABS works.
 
How much was the kit Greg, and how long did it take to install? Mine doesn't have ABS anyways, so no worries there.
From what I've read, you could expect 2-4/5 mpg gains, plus a lot of reduced wear on those front axle and tcase components.
 
Don't forget to thank the little people... like the guy who brought TimBits and sugar drinks! ;p
 
Enigma said:
How much was the kit Greg, and how long did it take to install?
Click to expand...

I got the kit from Slee back in the spring. I noticed Man-A-Fre also has a kit. It's hard to say how long it took as we had the distraction of children(although Justin did a great babysitting job). I would gues between 4-5 hours.

Norm, who did most of the work, is one of these guys that is amazingly smart when it comes to mechanics. Has had his Cherokee featured in a mag. He thinks there may be a way to modify the existing spool to work part time. Look for him on the BC4x4 forum Jeff. Pick his brain. I believe he goes by Stormin.
 
Here are some pics of the t-case pulled apart and the old and new spools. The rear and middle of the t-case have to be pulled apart. The front of the case reamains attached. The spool which is attached to the viscous cupler is the lower right side of the t-case.
t-case 001.webp
t-case 002.webp
t-case 003.webp
 
more pics. Taking thr bearing off of the original spool and getting ready to press on to the new one. New spool is the top pic.
t-case 004.webp
t-case 005.webp
t-case 006.webp
 
kim said:
Is that a broken tooth on the center cog, pic 3 post 5?
Click to expand...

Nope. The gears all looked very good when we had it open.
 
Nice work. Been looking at the Marks kits for a good while now. I found my 93FZJ80 felt much less congested in parking lots etc, if that makes sense, after changing the HF2AV (viscous full time) for a JDM HF2A (non viscous full time) The part time kit has to be icing on the cake.
If I can't find a factory HF1A ( part time non viscous) case for my 97 FZJ I will definately be looking at one of those kits.
 
70sguy said:
Nice work. Been looking at the Marks kits for a good while now. I found my 93FZJ80 felt much less congested in parking lots etc, if that makes sense, after changing the HF2AV (viscous full time) for a JDM HF2A (non viscous full time) The part time kit has to be icing on the cake.
If I can't find a factory HF1A ( part time non viscous) case for my 97 FZJ I will definately be looking at one of those kits.
Click to expand...

What do I have in my 91 FJ80? I thought it was non vis... Is there a kit I could use?
My steering doesn't feel impeded in 4wd(normal mode). But how would I know if I never felt one in 2wd :)
 
brownbear said:
What do I have in my 91 FJ80? I thought it was non vis... Is there a kit I could use?
My steering doesn't feel impeded in 4wd(normal mode). But how would I know if I never felt one in 2wd :)
Click to expand...

You've got the viscous. 2wd does feel a heck of a lot lighter, a bit less drivetrain clunk, and a bit more power/response. But you loose the stability of full-time 4wd, which is kinda nice in the rain and on gravel.

The kit is pretty cheap if you order it from Oz. Welcome to 4WD Systems Online!
 
Your 91 FJ80 is HF2A (non Viscous) Viscous coupling was only on the 93 up FZJ80s in the US market.
The Marks part time kit from Slee is available for your Tcase.

S
 
Any numbers on fuel consumption yet, as you are coming up to a month with this setup.

I've got the front shaft out of mine just now, and filled up today.

gb
 
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