S1 discovery vs S2 transfer case - Defender Source
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  #1  
Old August 7th, 2008, 10:36 AM
turbodave
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Dave C
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S1 discovery vs S2 transfer case

I'm looking at a transfer case locally, but the guy believes it came off a 1999 - but doesn't know if it's a s1 or S2. Is there a clear visible difference between the two? This is for swapping out the 1.6 transfer case on my '83 110...


Cheers,
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  #2  
Old August 7th, 2008, 10:43 AM
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Yes, the front flange is larger on a DII. The one on a DI is the same size as the one on your truck.
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Old August 7th, 2008, 11:49 AM
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Dave C
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So are there any bolt holes / measurements, or anything else I can easilly Identify (my 110 is still on a ship - LOL).


Here are some pics the guy just emailled me. He knows about as much as me. He did reference it's a 10-spline input.

http://www.davecoxon.co.uk/tc_1.jpg
http://www.davecoxon.co.uk/tc_2.jpg
http://www.davecoxon.co.uk/tc_3.jpg
http://www.davecoxon.co.uk/tc_4.jpg
http://www.davecoxon.co.uk/tc_5.jpg
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  #4  
Old August 7th, 2008, 03:17 PM
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it's not a D2 LT230, let me know the serial number and I can confirm the spec,
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Old August 7th, 2008, 04:00 PM
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The serial number is found where? ?He said he looked but couldn't see...

Follow-up Post:

Got it...

http://forums.lr4x4.com/index.php?showtopic=16590&hl=
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Old August 7th, 2008, 04:22 PM
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http://217.34.53.228:9876/uploads/230sno.wmv
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  #7  
Old August 7th, 2008, 05:13 PM
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I am pretty sure that is a late disco I with the later speedo sensor. Dave Ashcroft can tell you if you can switch your rear housing over to make it work with the mechanical speedo. I know it can be done with an early 1.22 case to a late 1.22 case, but with the 1.6 I am not sure.

Ron

PS, I would reseal it before using it and you have to remove the solinoid on top if you want to use low range.
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  #8  
Old August 7th, 2008, 11:27 PM
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oooh, electronic speedo... I had no idea the S1 discovery's went to an electronic speedo. Hopefully Dave A can shed some light on this. I would throw some new seals on it for sure.
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  #9  
Old August 8th, 2008, 12:38 AM
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The electric speed sensor just plugs into the speedo gear. You can remove the speedo gear from your other box if the inner speedo cable size is different between the different gears.

Or better yet change to electric speedo now. Egauges.com
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  #10  
Old August 8th, 2008, 03:34 AM
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Hi,


as Jim says the speedo will be no problem and as mentioned you will need to remove the solenoid,

are you sure you want to go from 1.667 to 1.211 ?

the engine may struggle to pull this higher ratio,
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  #11  
Old August 8th, 2008, 09:41 AM
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Jim, Dave, Great information. Thanks!

The 110 has a TDi in it, with the LT77 - and I will likelly be knocking up a new intercooler, exhaust and tweaking it slightly before too long.

Looking at the ratios (assuming I've used the right numbers) the 1.2 looks like a reasonably good match with the LT77 for 1st gear ratio - comaparing to a R380 with a 1.4 Tcase...
Fifth is noticably taller, but I'd sooner have it this way than too short - if it is too tall for any instance, I guess a shift to fourth would do the job.

Here is a comparison I knocked up previously of the overall ratios showing the logic behind my madness.

http://www.davecoxon.co.uk/LT77_vs_R380.jpg
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  #12  
Old August 8th, 2008, 04:19 PM
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Hi,

if the 200 tdi engine is healthy and the tyres not too big I would think it will be OK with the 1.2,

I though you had the original 1983 2.5 N/A,
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