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Transfer case questions - please help!
http://auszookers.com/forum/viewtopic.php?f=37&t=45145		 Page 1 of 1
Author:  Zook2510 [ Wed Feb 19, 2014 8:11 am ]
Post subject:  Transfer case questions - please help!
Hi everyone, we've got a 1996 coily sierra :roll: which is pretty much stock at the moment. We are running ~29 inch muddies on it and looking to go up to 31s at some stage. Been doing some research into switching the transfer case to get the gearing to where it should be for the bigger tyres but getting confused about it!

Can we swap the 1.3L coily t-case for a 1L case? I've read that you need to modify some other bits as well for it to fit? Or would a leafy 1.3 transfer case be better?

And also what is the difference with a switched and non-switched 1L transfer case? We don't have a 4wd dash light in the first place...not sure if we are meant to or not :?

Any help would be awesome!
Author:  tanshi [ Wed Feb 19, 2014 8:34 am ]
Post subject:  Re: Transfer case questions - please help!
a switch type 1 litre case should fit, but will need the flanges from a Wide track case put on it to match your flanges.

a non switch typre case is vastly different to a switch type, they are much harder to make work for the application

personally i would be looking at more than a 1 litre case for gearing of 31s
Author:  Gwagensteve [ Wed Feb 19, 2014 8:59 am ]
Post subject:  Re: Transfer case questions - please help!
X2 to that. 1.0 litre gearing is borderline with 31's.

Steve.
Author:  Zook2510 [ Wed Feb 19, 2014 9:24 am ]
Post subject:  Re: Transfer case questions - please help!
Ok thanks for the info. Sounds like we might need different gearing altogether...however my understanding is that we can't put new gears into the coily t-case? So to change the gearing we would need a WT or 1L transfer case anyway to begin with?
Author:  Marko_SJ [ Wed Feb 19, 2014 9:45 am ]
Post subject:  Re: Transfer case questions - please help!
Zook2510 wrote:
Ok thanks for the info. Sounds like we might need different gearing altogether...however my understanding is that we can't put new gears into the coily t-case? So to change the gearing we would need a WT or 1L transfer case anyway to begin with?


Yes.
Author:  JrZook [ Wed Feb 19, 2014 9:46 am ]
Post subject:  Re: Transfer case questions - please help!
^^ yup that is correcto. I would be looking at some reduction gears. As Steve said the 1L gears are very borderline especially with anything above 29's. Descent amount of work for minimal gains compared to installing reduction gears.
Author:  Zook2510 [ Wed Feb 19, 2014 10:16 am ]
Post subject:  Re: Transfer case questions - please help!
Cheers thanks for the clarification.

Does anyone have any particular reduction gears/ratios/manufacturers that they would recommend? We are using the zook mainly for off-roading, bit of rock crawling etc (so not using it as a DD but still need to get to off road spots on the highway!) and also a few beach trips.
Author:  tanshi [ Wed Feb 19, 2014 10:22 am ]
Post subject:  Re: Transfer case questions - please help!
for 31s i personally like 4.9s from lowrangeoffroad.

others will say the 6.5s are good but i personally find them too low.
Author:  JrZook [ Wed Feb 19, 2014 12:46 pm ]
Post subject:  Re: Transfer case questions - please help!
Beach + general wheeling = 4.9's. Even 4:1's would be a huge step up from what you have.
Author:  biff10 [ Wed Feb 19, 2014 9:17 pm ]
Post subject:  Re: Transfer case questions - please help!
I've got 4.9.1s in my coily with 31s and if you ask me they are perfect for dunes and slow as when you want to crawl, the 3:9 diff in the coily helps to,

Revs at 3800 doing 100 tho
Author:  Zook2510 [ Thu Feb 20, 2014 9:30 am ]
Post subject:  Re: Transfer case questions - please help!
Ok thanks for all the advice its definitely cleared things up for us!
Author:  Zook2510 [ Thu Feb 20, 2014 4:33 pm ]
Post subject:  Re: Transfer case questions - please help!
Actually just have one more question...priced up some reduction gears but a little out of our budget at the minute. Also thought some more about tyres and realised our current muddies are only about 27 inches lol. So prob gonna run 30s and drop a 1L t case in for now.

I just want to check that we need WT flanges to fit it? Plus the leafy jackshaft.

Cheers
Author:  coily96 [ Thu Feb 20, 2014 6:05 pm ]
Post subject:  Re: Transfer case questions - please help!
If you have trouble finding 1.3 WT flanges you can also use 1.0 NT and 1.3 NT yokes and join them to the coily shafts.

A shorter jackshaft will still be needed with NT yoke
Author:  Zook2510 [ Fri Feb 21, 2014 11:25 am ]
Post subject:  Re: Transfer case questions - please help!
Ok thanks. Would a NT jackshaft work (we will have 1L t-case with WT flanges) or does it have to be a WT jackshaft?
Author:  tanshi [ Fri Feb 21, 2014 11:32 am ]
Post subject:  Re: Transfer case questions - please help!
you could redrill the WT flange to fit the NT jack shaft i believe
Author:  Zook2510 [ Fri Feb 21, 2014 3:38 pm ]
Post subject:  Re: Transfer case questions - please help!
Ta. Should have it sorted now I think lol. We'll see.
Author:  Zook2510 [ Wed Feb 26, 2014 7:15 pm ]
Post subject:  Re: Transfer case questions - please help!
Help needed please! We have got our 1L transfer case fitted with WT flanges and also a WT jackshaft. Just pulled the original transfer case etc out of the coily and went to put the new one in, but the two mounts (of four bolts each) don't line up!! Were we went to get new mounts as well??
Author:  coily96 [ Thu Feb 27, 2014 9:08 pm ]
Post subject:  Re: Transfer case questions - please help!
Same mounts, it should go straight in.
Author:  Zook2510 [ Thu Feb 27, 2014 11:22 pm ]
Post subject:  Re: Transfer case questions - please help!
So the 1L transfer case should bolt straight onto the coily mounts? Have tried and couldn't get it to line up for some reason.Also got some WT mounts hut they don't seem right either. The gear shift lever seems to be stopping us from getting the correct angle.
Author:  JrZook [ Fri Feb 28, 2014 8:39 am ]
Post subject:  Re: Transfer case questions - please help!
Have you tried taking out the gear shift lever and installing that last?
Author:  tanshi [ Fri Feb 28, 2014 8:45 am ]
Post subject:  Re: Transfer case questions - please help!
x2 take the gear stick out.
Author:  Zook2510 [ Sat Mar 01, 2014 8:15 am ]
Post subject:  Re: Transfer case questions - please help!
All sorted, thanks everyone, turns out that when the case was rebuilt before we bought it the gearshift was put back in the wrong way! Now to go have some fun :D
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