Reply With QuoteI believe they are the IH TF727 used in the rangie, great box but they do sap a bit of power out of the poor little 3.5.
ChatterBox
So, I was thinking of just putting an LT95 into my 1983 Rangie. The 727 in it at the moment runs beautifully well, but is leaking oil everywhere and has to come out at least to fix that.
But, now that I've done my research, it would seem that the 727 is actually a great little automatic. Yes, there's no lock-up, and there are only three speeds, but it's very strong and there are a ton of parts still available, as well as a huge amount of information, including Carl Munroe's excellent book.
You do read about how the Range Rover version is weaker than the big V8 boxes but I haven't found anything that really proves it - just three clutch plates in the front pack instead of four, and maybe some other little differences, but still more than enough strength for a 3.5.
And there's another comment somewhere about how - apparently - Land Rover bought up all the transmissions from International Harvester when they stopped making the Scout II. And, sure enough, this Scout box: Automatic Transmission - International Scout Parts - Scout II Parts - Your Authorized IH Lightline Dealer looks like a dead ringer for mine. The housing on the back is even the same.
It wouldn't surprise me at all if the old cash-strapped factory just bought these transmissions and made the adaptor parts necessary.
So . . . would the Scout torque convertor fit? Just in case I need another one. (My guess - Land Rover wouldn't have made their own, or even changed this one, if they didn't have to.)
Can flexplates be repaired? (Because I don't know what mine looks like yet.)
Does anyone have a preference for Transgo or B&M shift kits?
Are the super-duper bits like Teflon rings, or ally servo parts worth putting in?
At any given point in time, somewhere in the world someone is working on a Land-Rover.
LordRover
SubscriberI believe they are the IH TF727 used in the rangie, great box but they do sap a bit of power out of the poor little 3.5.
MY08 TDV6 SE D3- permagrin ooh yeah
2004 Jayco Freedom tin tent
1998 Triumph Daytona T595
1974 VW Kombi bus
1958 Holden FC special sedan
ForumSage
Are you saying the scout II TF727 has a mount similar to the LT230?
I scrapped a TF727 from an early rangie years ago but still have the tail housings.
ChatterBox
Yes, that's what I've read elsewhere, comments like, "I pulled the 727 out of my Range Rover and sold it a buddy with a Scout and it went straight in" sort of thing, which being on the Internet you have to be a bit circumspect about, but it would appear to be true.
The main housing has an IH housing on the back, and onto that is a Land Rover adaptor, and that bolts onto the transfer. You can really see how the company had to adapt the thing. That's why I wonder if they just used a Scout convertor instead of having the extra time and money to sort out their own, as usual back then.
I do need a 4.6 . . .
At any given point in time, somewhere in the world someone is working on a Land-Rover.
Master
If all classics from 1970 to 1995 in both Auto and manual , were all lined up for a Drag, then guess which one finishes last by 5 seconds ? Yep, the Torqueflyte box one.
Nice box in entirely the wrong context. Its parasitics are around 40-50HP alone
Wont accelerate,wont Tow ,Wont Cruise,just chews juice
You really need 250HP plus to make that box perform,not a piddly 125hp
ChatterBox
40-50 HP????? What, a third of HP? You know, it's a sad comment on my many years of driving a 2&1/4 petrol Landie that I was quite happy with the way the Rangie drove! It cruises well at about 2200rpm, but then I don't have any other Range Rover experience to compare it with.
Maybe it will get an LT95 after all. Painful stupid cars.
At any given point in time, somewhere in the world someone is working on a Land-Rover.
Swaggie
I must say that with a 1.222 transfer ratio they get up and go quite well, we actually raced a 1981 2 door rangie in the 1992 aust safari with a hi comp twin carb ex 110 County 3.5 and TF727 with a b&m quick click shifter and stock 205/R/16tyres and was very impressed with its performance really. It meant that we could cane that engine to valve float all day and not hurt the trans and consequently finished the event with NO mechanical issues AT ALL.
Gearing is the key, 1:1 is tooo tall, fit a 1.2222 Disco case and keep the TF727.
JC
ForumSage
How fast will it spin at 100km/h with a 1.22 transfer?
Swaggie
no idea, no tacho just kept punching the shifter forward untill it ran out of gears
IIRC i worked it out once it was around 3000? Anyway, the little 3.5 loved it. When we drove it from Perth to Sydney for the start of the event, we averaged 19MPG at 100km/h. was running standard 175CD carbs, efi exhaust manifolds and electronic ignition. Driven absolutely flat out in the Simpson/ Mt Dare stages we got down to about 10/11mpgNever overheated, nothing at all broke, even with 10 spline axles
we split the fuel tank a little and had some rear shock and spring issues but thats about it
JC
Last edited by justinc; 16th March 2012 at 07:02 PM. Reason: just checked, 3000 rpm not 2800 @100km/h
ChatterBox
Crikey, what a story. Sounds good. I worked it out as well and got 3000rpm, too. Wasn't that a little busy for highway cruising? Funnily enough, I'll be using the same carbies, exhausts, and ignition. I wonder, with the engine being so small, if it gets better mileage at higher revs and smaller throttle openings.
At any given point in time, somewhere in the world someone is working on a Land-Rover.
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