overdrives

**Landy Smurf** · 5th July 2009, 10:47 AM

if i keep my ute i was thinking about putting an overdrive in it but i was wondering if they are worth it? how much more speed do you get? what are the best brands?and hoe much will it cost?

**Bush65** · 5th July 2009, 12:38 PM

I believe the only ones available now are the Rocky Mountain one. From their website the Australian dealer is All Four x 4 Spares at Kotara.

I seem to remember the other one (name escapes me) is no longer available.

**Landy Smurf** · 5th July 2009, 04:49 PM

what about old ones

**PAT303** · 5th July 2009, 05:00 PM

I've had a Toro and fairy,noisy sh*ts of things.Fit Rover ''P'' series saloon centres,they are 3.9 ratio.There is about 6 of them in a paddock at Branxton on the right hand side just before the Mobil servo,ask the owner if he wants to sell you two. Pat

**Landy Smurf** · 5th July 2009, 05:04 PM

Originally Posted by PAT303

I've had a Toro and fairy,noisy sh*ts of things.Fit Rover ''P'' series saloon centres,they are 3.9 ratio.There is about 6 of them in a paddock at Branxton on the right hand side just before the Mobil servo,ask the owner if he wants to sell you two. Pat

next time im down there ill try and stop in. but do you think it worth getting an overdrive?

**Newbs-IIA** · 5th July 2009, 05:31 PM

Put it this way, if one came up at the right price and withing a reasonable distance from me I would get one. I have already done a few highway trips in my IIA and while flogging along at 45-50mph is fun for a while, you eventually want to go the speed limit and get it over with

An overdrive is only generally used on the highway/motorway at speeds above 60-70kmh. If you engauge it in lower gears you will wreck the o'drive very quickly - even with a 2.25P

From what I have heard it should allow you to drive at 60mph comfortably. Be prepared to work that gearstick when you get hear a hill haha

**Debacle** · 5th July 2009, 05:51 PM

Best to see if you can get a high ratio transfer case.

**T1ASLAV** · 5th July 2009, 06:31 PM

Just got back from the Ghan and the 110 I bought came with a GKN overdrive, serviced it just today in the driveway.
In the short time I have had to play with it I have to say the unit performs really well and I think it will help out on the long k's from Darwin over to Broome in the next week or so.
Got a receipt for the unit with the car and the total, incl install, was $2400, not cheap but definatly makes the car more comfortable on the highway for the family so I think it would be a good investment over the long term.

regards

**PAT303** · 5th July 2009, 06:57 PM

The trouble with series O/D's is that the transfer gears are straight cut which is why they are noisy,the O/D then spins them faster so makes the noise worse.You can buy High speed transfers from the UK,I would look at them or diff's.Most O/D's are now very long in the tooth so the cost of buying one and maybe repairing,rebuilding them is not worth it.You could also look at fitting 255/85/16 tyres,that would up the gearing quite a bit over 7.50x16's.Having had two I wouldn't go the O/D route in a series again. Pat

**JDNSW** · 5th July 2009, 09:03 PM

The commonly available overdrive is the Fairey. Both new units and all parts are readily available from Rovers Down South in New Orleans. That is the sum of their advantages! Suffering from an excessively small oil reservoir and poor lubrication of the drive dog, they are prone to problems. They tend to be very noisy (their own gears, not the transfer gears as PAT303 suggests) but do actually work quite well. They are fairly fragile, and should not be used except in third and fourth,but can be used in low range without trouble in those gears. (One of the thing I use mine for driving round the property is for increasing the speed in fourth/low to avoid the need to stop and change back to high, knowing you will need to change back to low in the next rough spot.)

If buying a second hand one, you need to be very sure that everything is there, and that the drive dog is present and in good condition. While all parts are available, they are expensive.

If you come across the Toro overdrive at an affordable price, get it if it is complete and in reasonable condition. They are much more rugged and durable, but parts are made of unobtainium. There are several other makes, at least one in current production, but you are unlikely to come across them, and if you do they will probably cost more than your Landrover did.

John

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