Fairey overdrive

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Originally Posted by JDNSW

As everyone has indicated, you cannot fit any overdrive on the 6x6 because it uses the same place as the overdrive to take the drive to the third axle.

For the same reason, you cannot swap to a different gearbox that uses the LT230 transfer case. Your only option is to fit three higher ratio diffs, but this brings its own problems. The other solution often suggested for higher ratios, of fitting larger tyres, is very limited because of the limited clearance between tyres on the second and third axles.

John

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He could what I did and put the MSA g,box with its 5th gear OD in front of the LT95 Tbox, and space the axles further apart and run 900x16 tyres.:D

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Originally Posted by Gordie

Having never had an OD in any of my landys, nor driven one with one in...do they make a big difference??

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I have a fairey in my s2a, on a trip from Blair Athol to Kingston SE one easter, I did the trip on one 10 gallon tank of fuel. I must admit she was starting to cough and fart as I arrived at the BP servo on the edge of town(Kingston SE, home of the big crayfish/lobster). I had a full jerry with me just in case. After I got through the hills I could sit on 110 kms, (I've got a s3 speedo and gps. (Speedo was surprisingly accurate)), but mostly sat on 100 kmh, I also didn't have my Athol Hedges steel roof (250+ kg) on at the time. Was a GREAT trip too. I love the overdrive in my s2a. I think its great, just wish it wasn't so bloody noisy...:censored:.

Cheers Rod:wasntme:

OD's for the LT95's are about - I picked up a good one for $200. You just have to keep your eyes peeled. I run one in the 101 and it makes a nice difference at highway speeds - it doesn't make you go any faster, but everything is a lot quieter. A 4BD1T would kill one pretty quick, so I wouldn't bother if you're running the diesel, and as already mentioned won't go in the 6x6 anyway.

For the OP - if you're only doing highway KM, then changing all 3 diff ratios will make things better, but you will sacrifice your low range ratios a bit, and you may need to wind the wick up a bit on the engine to give it a few more HP to cope with the taller ratios. The 4BD1T will handle plenty more though, so this isn't a huge deal, but it will put more stress on the driveline.

So where is the OP?
If he owned one he should know where the third axle drive is.
Perhaps he is a , what do you call them. a TROLL

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Originally Posted by 123rover50

So where is the OP?
If he owned one he should know where the third axle drive is.
Perhaps he is a , what do you call them. a TROLL

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That's a bit harsh IMO. The thread was only started this morning and the OP isn't on line at the moment. What seems obvious to some of us, may not be so to a newcomer. I would not have known where an overdrive bolted up to a LR gearbox when I first got mine. They seem to be genuinely after an answer here, which has been answered well.

He's probably got his answer. Why make another post?
I certainly wouldn't reading some of these posts.

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Originally Posted by 87County

Fairey ODs for LT95s would be like hens teeth I think.

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Not quite but they are rare.
I've seen a few pop up on ebay over the past few years.

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Originally Posted by Gordie

Thankyou 87county, for limited highway driving and for what I imagine the unit would cost, it would be nice, but probably not justified for my SIII. Cheers.

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Gordie,for the Ser3 you are able to get a high speed transfercase modification.Better than a Fairey as there is no added noise and the drivetrain strength is retained.
Have a google,perhaps not as common as they once were.
Definately not suited to the OP's 6x6.
Andrew

Ashcrofts still do the high speed transfer case for the series box. Comes with the modified case and new gears for 400 quid plus delivery. I have one in a box ready to go in my series 3. :)

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Originally Posted by bacicat

That's a bit harsh IMO. The thread was only started this morning and the OP isn't on line at the moment. What seems obvious to some of us, may not be so to a newcomer. I would not have known where an overdrive bolted up to a LR gearbox when I first got mine. They seem to be genuinely after an answer here, which has been answered well.

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Get out:)
I bet you were like me and researched everything before hand and knew where all the PTO,s and shafts were and how they worked.
I bought my 6x6 back in 1999, there were not many around then but there was still enough info available to know how everything worked.
If the OP has a 6x6 then I apologise.

But you are probably right , I am getting to be a bit of a "Cranky old man":angel:

Keith

Thanks John looked at larger ties and the clearance was an issue