xfer box numbers

Badger · Mar 17, 2011

Difference in numbers between disco & def xfer boxs?

On phone so search limited

Ta

Bromsgrove Defender · Mar 17, 2011

PaulWilde said:
Difference in numbers between disco & def xfer boxs?

On phone so search limited

Ta

Hi Paul.

Numbers as in ratio's an what years?

Bromsgrove Defender · Mar 17, 2011

Bromsgrove Defender said:
Hi Paul.

Numbers as in ratio's an what years?

Td5 Defender transfer boxes are 1.4:1 as far as I am aware.
I think Discovery transfer boxes are 1.22:1.

Is that what your after ?

[JP] · Mar 17, 2011

I think this is what is after

List of Serial numbers and corresponding Ratios

All stock LT 230"s have a low ratio of 3.321, the following list refers to the high range ratio.

12D = 1.667 LT 230R

13D = 1.410 LT 230R

14D = 1.003 LT 230R

15D = 1.192 LT 230R

20D = 1.667 (2.5 N/A 110),

22D = 1.410 (all 4Cyl 90/110 bar above),

25D = 1.410 (V8 110 LT 85),

26D = 1.003 (RR Classic 3 speed auto),

27D = 1.192 (early RR Classic),

28D = 1.222 (RR and Disco I),

29D = 1.192 (V8 90 LT 85),

32D = 1.222

34D = 1.410 (2.0 Disco I),

36D = 1.211

38D = 1.211

40D = 1.211 (NAS/Japan 90&Disco),

41D = 1.211 (Disco II, diff lock stud),

42D = 1.211 (Disco II, diff lock stud),

43D = 1.410 (90/110 TD5),

57D = 1.410 (90/110 TD5),

61D = 1.211,

62D = 1.211,

68D = 1.211,

69D = 1.211,

70D = 1.211 (Disco II, no diff lock),

LT 230 Transfer case comparisons

1.003 > 1.222 = 17.92% Drop
1.003 > 1.410 = 28.86% Drop
1.003 > 1.667 = 39.83% Drop

1.222 > 1.003 = 21.80% Raise
1.222 > 1.410 = 13.33% Drop
1.222 > 1.667 = 26.70% Drop

1.410 > 1.003 = 40.57% Raise
1.410 > 1.222 = 15.38% Raise
1.410 > 1.667 = 15.41% Drop

1.667 > 1.003 = 66.20% Raise
1.667 > 1.222 = 36.41% Raise
1.667 > 1.410 = 18.22% Raise

[JP] · Mar 17, 2011

mm... reading his post again, might not be!

Badger · Mar 17, 2011

1988 def box atm, need a 1:2 ish xfer box from a disco, going to look at one tomorrow, just need to be sure I get the correct one

Cheers folks

Badger · Mar 17, 2011

1988 def box atm, need a 1:2 ish xfer box from a disco, going to look at one tomorrow, just need to be sure I get the correct one

Cheers folks

Badger · Mar 17, 2011

28d looks to be the one, 1.222 which gives me better top end & mpg I believe

[JP] · Mar 17, 2011

good to know it was helpfull, wasnt sure if it was what you were after

Badger · Mar 17, 2011

Tbh jp mate, you wanna stick that list in the sticky at the top, very helpful

Bromsgrove Defender · Mar 17, 2011

PaulWilde said:
1988 def box atm, need a 1:2 ish xfer box from a disco, going to look at one tomorrow, just need to be sure I get the correct one

Cheers folks

FFS tell us what feckin number ya need. Serial number? Does JP's post not help?

Badger · Mar 17, 2011

Bromsgrove Defender said:
FFS tell us what feckin number ya need. Serial number? Does JP's post not help?

Calm down, calm down

PaulWilde said:
28d looks to be the one, 1.222 which gives me better top end & mpg I believe

Bromsgrove Defender · Mar 18, 2011

Bromsgrove Defender said:
FFS tell us what feckin number ya need. Serial number? Does JP's post not help?

PaulWilde said:
Calm down, calm down

PaulWilde said:

28d looks to be the one, 1.222 which gives me better top end & mpg I believe

Click to expand...

I've got absolutely no idea how I missed that

Badger · Mar 19, 2011

Bromsgrove Defender said:
I've got absolutely no idea how I missed that

:lol: :lol:

xfer box numbers

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