Toyota Stout Diff Center Compatibility

[Blinga_22rte]

Hi guys. I Just got a 1970 RK101 Stout-Lite.
Its down south and I have to drive it home back to QLD. But with its diff center, it screams at 90km/h 100km/h max. Hence I want to swap the diff center before I mate the 1600 km drive home.

I read that they are ridiculously low? They use 40 or 60 series diff centers?

Any help would be great. Driving home at the speed limit would be nice!

Thanks guys.

[dnegative]

Put thicker oil in it, turn the radio up and drive it back.......

Fucked contact is not great but it normally doesn't lead to imminent failure, we had a hilux at work that whined like a slut for 50k before letting go.

[Blinga_22rte]

I'm not worried the diff will bomb, The ratio is really low. Highest speed it will cruise is 80 km/h.
If I can't suss out the diff gears, I'll go get some stupid tall tyres on the rear! haha

[petergoudie]

The Lite-Stout did have a low ratio like 4.6 or 4.8 but they also had big balloon cross-plys to make up for that slighlty. Keep it original and drive slow to enjoy the scenery.

[Dazza]

It will be a lot quicker and easier to bolt on bigger tyres than to change diff centers. They are the same wheel stud pattern as Hilux and early Landcruiser arent they, so just bolt on some 750X16 tyres from a Landcruiser. Pretty sure they run a G series diff and 4.875 Ratio because a mate of mine used a Stout lite diff in his Hilux YN65 years ago when he blew his diff. The only difference was the flange where the tailshaft bolts up to and he just drilled another set of holes in between the original ones.

[Blinga_22rte]

From what I've gathered. The Lite stout diff is a 5 stud bolt pattern just like the 2wd hilux.
This is speculation but "apparently" the lite-stout diff is a G series diff just like all 2wd diff housings. Which makes the diff centers interchangeable with Hiace and 2wd hilux.

Through the years 78-83 the 2wd hilux diff were shorter. Which makes them favorable for Ford escort guys the swap in since the wheel track is pretty much spot on. Though to modern years the track widths vary, but all use the same centers.

[Blinga_22rte]

toyota_diff_sml.jpg

Some handy info on Hiace and Hilux diffs.

[whysmees]

ben ? i was looking at a service pamphlet today and it had a diagram that showed the lite stout and first of hiace having the same chassis but stated nothing about the hilux only when it came to the engine as being the same as the hiace and lite stout (2R).
going back about 4 years ago i took an early hiace chassis for scrap (kicking myself now) and thanks to the miracle of google and looking at the early hilux it is possible that the earliest hiace is more like the lite stout than the hilux, where the second generation hiace looks to be more like the hilux.
as i understand early hiace had 4.8:1 and going by posts from the US i was under the impression that the lite stout were closer to 5.8:1 (full stout RK100 and RK101 were 6.1:1) as the US only RK40 had the 3R 1900 14 inch 7.50 tyres 450kg payload (softer suspension for better ride) and the rest of the world had from 1965 on the RK43 2R 1500 13 inch 6.50 tires with 1,000kg payload.

[Subscan]

So can anyone confirm if the Lite Stouts diff is a G series?
Also are the gearboxes in the Lite Stout the same as the full Stout?

[whysmees]

all the toyota stout from 1963-1978 have a R40 gearbox (includes handbrake) that was also used in the toyoace, dyna and coaster mainly those that had the single 700 15" tires as they were originally based off the RK45, RK100 and RK101 "full" stouts chassis and nothing else shares this configuration of light commercial gearbox.
the diffs centres in the RK45, RK100, RK101 and RK110 are 9.5" K series the same as landcruisers or a K202 6.17:1 ratio, the lite stout have possible 5.8:1 7.1" E series or the same that was used in the h10 series hiace 1967-71 with a 4.8:1 ratio, the first of rn10 series hilux 1968-71 were designed and built by hino and have 8" G series diffs with handbrake.