jason moore Posted August 10, 2011 Share Posted August 10, 2011 Hello to all, yes I just joined the asylum and bought a 1994 (5/94) Discovery. It has a 5 speed Manual Transmission. The transfer case is cracked and needs to be replaced I am having a hard time finding a used 1994 t-case. The person I bought it from said I could use one off any Discovery up to 1999. Is this correct? He also said the the t-case in it now is off a Defender 90. Lower gear ratio? How do I check to see if the is the case "no pun intended". This is the number off the side of the t-case 28D334601E. Thank you~jason Quote Link to comment Share on other sites More sharing options...
BogMonster Posted August 10, 2011 Share Posted August 10, 2011 Any LT230 transfer case will fit just the ratios are different. Your vehicle would originally have had a 1.22:1 high ratio, whereas most Defender t\boxes are 1.41:1 high range. Whether this is good or bad depends on the vehicle - fitting oversize diameter tyres may mean the lower ratio is more appropriate. Any box from any Discovery 1989-1998 should fit (though later is better) and any Defender box from a 300Tdi onwards, with the caveat about the ratios being different. Older t/boxes will fit right back to the year dot (1983 for a 110) but the ratios on those are often 1.67:1 which is far too low unless you are putting 37" high tyres on it Somebody with a list of t/box prefixes will no doubt appear but they often have the ratio on a sticker on the box as well. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted August 10, 2011 Share Posted August 10, 2011 Ah now I see your location, can you confirm if it is a NAS spec vehicle as the info above applies to UK and export market vehicles which are mostly diesels. The NAS V8 Defender t/box may be the same 1.22 ratio as a Discovery, but I'm not sure. Quote Link to comment Share on other sites More sharing options...
jason moore Posted August 10, 2011 Author Share Posted August 10, 2011 Ah now I see your location, can you confirm if it is a NAS spec vehicle as the info above applies to UK and export market vehicles which are mostly diesels. The NAS V8 Defender t/box may be the same 1.22 ratio as a Discovery, but I'm not sure. Yes it is a NAS gas V8 3.9L. I has oversize tires also I am running 235/85 r 16 and the truck has been lifted 2". Is there any way to tell witch transfer case I have. The previous owner may or may not have put a t-case in form a 90 Defender? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted August 11, 2011 Share Posted August 11, 2011 Ashcroft have a list based on serial number: http://www.ashcroft-transmissions.co.uk/index.php?act=viewProd&productId=45 Your serial (28D334601E) leads you to a 28D = 1.222 Assuming someone hasn't put 1.4 gears in it of course.... Normally an LT230 has a red/black sticker on it with the ratio, but I guess you haven't got this as you found the serial number, just not the sticker As it is a manual you can basically fit whatever year LT230 you like to it, as above, and as you are only on 235/85 tyres a 1.222 ratio one will do fine, if you were on 33" or above then a 1.4 may be best -but sounds like you will have a hard time getting over there... Quote Link to comment Share on other sites More sharing options...
jason moore Posted August 11, 2011 Author Share Posted August 11, 2011 Ashcroft have a list based on serial number: http://www.ashcroft-transmissions.co.uk/index.php?act=viewProd&productId=45 Your serial (28D334601E) leads you to a 28D = 1.222 Assuming someone hasn't put 1.4 gears in it of course.... Normally an LT230 has a red/black sticker on it with the ratio, but I guess you haven't got this as you found the serial number, just not the sticker As it is a manual you can basically fit whatever year LT230 you like to it, as above, and as you are only on 235/85 tyres a 1.222 ratio one will do fine, if you were on 33" or above then a 1.4 may be best -but sounds like you will have a hard time getting over there... Thanks all this info is very helpful. Quote Link to comment Share on other sites More sharing options...
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