BW QT questions

[WillyPete]

i don't have a QT, but i'm curious about how they work.

if i understand correctly, the xcase has a diff that works even in lo range? so you could creep around on dry pavement at 5 mph if you wanted to smile.gif? the emergency drive switch locks both front and rear driveshafts; can you do this in high range? this seems like a really versatile transfer case. what about wear issues and stuff? i've heard QT fluid is apparently impossible to find ;)

i also hear that there's an O/D unit available for QT, and a part time convo kit.

now i just have to find a 70s J20 with auto...

i just thought of sumthin! if the 1305s were 1339s minus the bolt on reduction unit, couldn't you bolt up multiple units? 6.6:1 lo range, anyone? heh, or maybe 17:1 smile.gif?

[ July 22, 2001: Message edited by: WillyPete ]

[joe]

<BLOCKQUOTE>quote:</font><HR>Originally posted by WillyPete:
if i understand correctly, the xcase has a diff that works even in lo range? so you could creep around on dry pavement at 5 mph if you wanted to smile.gif?
<HR></BLOCKQUOTE>

Once the diff is locked in(E-Drive) you can't drive on dry pavement anymore, only loose traction surfaces. If you're asking can you drive in LO w/o the E-drive locked...I dunno?

<BLOCKQUOTE>quote:</font><HR>
what about wear issues and stuff?
<HR></BLOCKQUOTE>
It's like any other x-cases, things wear out. The more you drive w/o E-drive locked the more you wear the cones if the front axle is kicking in and out. It's recommended if you know you'll be spinning tires alot and working the clutch cones hard and often to lock it in E-drive to save on clutch wear and tear.
<BLOCKQUOTE>quote:</font><HR>
i've heard QT fluid is apparently impossible to find ;)
<HR></BLOCKQUOTE>

Dealers have it as do some parts stores.
<BLOCKQUOTE>quote:</font><HR>
i also hear that there's an O/D unit available for QT, and a part time convo kit.
<HR></BLOCKQUOTE>
The reduction unit isn't in production anymore so you'll have to find an existing unit. MileMarker still makes and sells the
part-time kit. About $450-$500.
<BLOCKQUOTE>quote:</font><HR>
i just thought of sumthin! if the 1305s were 1339s minus the bolt on reduction unit, couldn't you bolt up multiple units? 6.6:1 lo range, anyone? heh, or maybe 17:1 smile.gif?
<HR></BLOCKQUOTE>

Not possible, the back of the reduction has no provision for driving another reduction unit. One unit per customer ;)

[Mud Thrasher]

so you could creep around on dry pavement at 5 mph if you wanted to?
Yes you can but not with the e-drive. It is strickly for offroad use only. The high/low is is totally seperate in the case from the e-drive gearing. You can throw it in low and pull someone out of a ditch all day but you wouldn't want to drive around in low gear cause you wouldn't get around very fast. The high/low is like having 2hi/2low and when you engage the e-drive it becomes 4hi/4lo.

No you couldn't bolt up multiple units. The reduction unit bolts up to the t/case and there is no room for anything else. Plus there isn't really any aftermarket gear reduction kits that I know of for it.
Hope that helps ya some.

[Bob Barry]

I've driven my QT around the parking lot at work in full-time low-range mode (very slowly). People like it for towing their boats out of the water and stuff like that, since the tires don't scuff when they're turning in the lot.

Since the "PTO Cover" (how it's listed in the exploded parts diagrams) allows different connections between the input shaft and the drive chain, it is theoretically possible to engineer an overdrive/underdrive/extreme underdrive bolt-on unit. Unfortunately, the standard low-range unit is the only piece ever made to bolt on there, and there isn't enough demand to warrant engineering a whole new unit to do what we'd want.

And yes, bolting on a reduction unit turns a 1305 into a 1339.