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AndyH aka Mad4x4
Off-Road Guru
Joined: 29 Oct 2002
Odometer: 1426
Location: St Cyrus (Scotland)
2012 Land Rover 101
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 Posted: Wed Jan 04, 2012 7:20 pm Post subject: Transfer Ratios
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Any one tell me the ratios of Transfer boxes (L230)
Looking to re-gear a 300tdi Gearbox for a 101 .
I guess that
5th @ 2800 will give 1:0.77 -> 1:1-> 1:5.75 = on a 9x16 wheel gives about 65-70mph.
Which box has a 1:1 (or close to ) Hi transfer ratio.
And Q2 has anyone got one spare ?
| Code: | Mods Engine rpm Gear ratios Transfer Box Diffs Final ratio Wheel rpm Speed km/h
Low range 1st 1400 4.0691 3.3206 5.57 75.2610 19 3 2.02 1400 for max torque climbing
Low range 2nd 1400 2.4480 3.3206 5.57 45.2776 31 5 3.36
Low range 3rd 1400 1.5049 3.3206 5.57 27.8342 50 9 5.46
Low range 4th 1400 1.0000 3.3206 5.57 18.4957 76 13 8.22
High range 5th 2800 0.77 3.3206 5.57 14.2417 197 34 21.35
High range 1st 2800 3.6910 1 5.57 20.5589 136 24 14.79
High range 2nd 2800 2.1320 1 5.57 11.8752 236 41 25.60
High range 3rd 2800 1.3970 1 5.57 7.7813 360 63 39.07
High range 4th 2800 1.0000 1 5.57 5.5700 503 88 54.58 2800 rpm for cruising
High range 5th 2800 0.77 1 5.57 4.2889 653 114 70.88
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Hooli
Mud Obsessed
Joined: 09 Jul 2004
Odometer: 2217
Location: Doncaster
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| Posted: Wed Jan 04, 2012 8:40 pm Post subject:
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If I remember right the LT230 comes with 1.6, 1.4 & 1.2 high range ratios. There is a T'box with a 1.1 ratio off an auto (I think) But I can't remember which, got a feeling it's a RR one though.
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spannerman69
Mud Obsessed
Joined: 01 Oct 2003
Odometer: 2807
Location: st.helens
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| Posted: Wed Jan 04, 2012 9:56 pm Post subject:
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all i can remember is that a disco is 1.6 and a defender is 1.4 , not sure were the 1.2 came from .
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Hooli
Mud Obsessed
Joined: 09 Jul 2004
Odometer: 2217
Location: Doncaster
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| Posted: Wed Jan 04, 2012 10:39 pm Post subject:
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Disco is 1.2 to allow for the smaller wheels. Defenders & 90/110s are 1.4 or 1.6 depending on the original engine type.
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spannerman69
Mud Obsessed
Joined: 01 Oct 2003
Odometer: 2807
Location: st.helens
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| Posted: Wed Jan 04, 2012 10:42 pm Post subject:
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i stand corrected . 
having a blonde moment , yeah a disco trans box on a defender .i now its been done before and is the normal upgrade . 
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forkrentfitter
Articulating
Joined: 01 Jan 2007
Odometer: 523
Location: felixstowe
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| Posted: Wed Jan 04, 2012 10:51 pm Post subject:
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| 1.1 was an early rr auto,hens teeth i recon.if you go on ashcroft transmissions website i think they are all listed.
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AndyH aka Mad4x4
Off-Road Guru
Joined: 29 Oct 2002
Odometer: 1426
Location: St Cyrus (Scotland)
2012 Land Rover 101
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| Posted: Thu Jan 05, 2012 4:06 pm Post subject:
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Looks like I need a 14D LT230 Transfer box
__________________________________
Scots do it better in Kilts
· I HAVE just returned from a diplomatic trip to the Congo and I can testify
that at no point did I see anyone drinking Um Bongo |
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clbarclay
Off-Road Guru
Joined: 22 Oct 2006
Odometer: 1779
Location: Worcesterhire
1987 Land Rover Range Rover
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| Posted: Thu Jan 05, 2012 4:40 pm Post subject:
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IIRC the diffs in the 101 Salisbury axles are similar to the diff in a series 3 Salisbury rear axle. If you can swap the ring and pinions (goggle search intimates yes, but I can't find a defiant answer) then you could change from a 5.75:1 to 4.7:1 diff ratio, use a more common 1.2:1 LT230 and then still (in theory at least) manage 65+ mph. I would expect a pair of 4.7:1 Salisbury R&P gears to be easier to find than a 1:1 LT230.
All LT230 transfer boxes had the same 3.32:1 low range though, so off road it wouldn't go as slow with 1.2/3.32:1 & 4.7:1 as it would with 1/3.32:1 & 5.75:1 set up.
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Hooli
Mud Obsessed
Joined: 09 Jul 2004
Odometer: 2217
Location: Doncaster
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| Posted: Thu Jan 05, 2012 10:12 pm Post subject:
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LT230 & overdrive while keeping the lower ratio diffs might be a similar price option?
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