Diff removal on a MK5 SWB Mid Roof VG 120 5wheel stud axle?

[cherniy_chack]

NeilsTransit,exactly coefficient 1: 3.55?I know diff at 3.9.
How many teeth on the shank and how many teeth on the gear?
I had a narrow bridge Mk3 with a differential ratio of 1: 4.11.
Then he put a wide bridge from Mk5 and a reducer (diff) 1: 4.11.
I had to change the axis of the satellites, the satellites and bore the 2 holes in the satellite housing to pass the semi-axes of a larger diameter.
Six months ago the reducer (diff) went out of order-two teeth broke on the shank.

[NeilsTransit]

Yes exactly 3.55/1, apparently the diff was out of a Zephyr ute (Australian idea, like a tray but unit construction) and I was there when Diff man measured the ratio. In regards to something breaking only time will tell. The parts used were the crown wheel and pinion out of the Zephyr, both casings were identical and the rest was from the 4.56/1 Transit diff with new pinion bearings shim and seal. As you say the usual ratio of the Zephyr diff is 3.9/1
Excuse my ignorance but what is a narrow bridge MK3 and wide bridge MK5?

[cherniy_chack]

Excuse my ignorance but what is a narrow bridge MK3 and wide bridge MK5?

The track mk3 is several centimeters narrower than the track mk5.Rear bridge mk3 "narrow", bridge mk5 - "wide"
Was the gearbox body used from Transit Zephyr or from Mk5?
If the body Mk5 was used, adjustment of the engagement of the crown wheel and pinion is required.
If this adjustment is not made, there will be a noise

[Hondekop]

Excuse my ignorance but what is a narrow bridge MK3 and wide bridge MK5?

In various languages the axle is referred to as bridge.

[MinorMatt]

Never heard an axle referred to as a bridge before...

[vanfox]

Be fun driving over Tower Axle ha. You mention you have an auto box. I guess this will give the diff a softer life than dropping the clutch with a manual. Keep us posted.

[cherniy_chack]

Guys, what's the difference, we call this thing "bridge" or "axis", we understand that it's about one thing. The one thing that the reducer or diff is inserted in.
NeilsTransit,my friend Fordyka had a gasoline Mk3 in 1988 with a gearbox (diff) 3.9.My friend FT-MK5 has a gasoline DOHC Mk5 with a reducer (diff) 4.1.
Reducers 3.9 and 4.1 should be sought among gasoline Transit.
The efficiency of using a powerful gasoline engine can be increased by using larger wheels, 15 "and 16" from Mk6.
I use my 4.56 on Mk3 on the front axle of the wheel 15 "and 16" on the rear axle.

[NeilsTransit]

Guys, what's the difference, we call this thing "bridge" or "axis", we understand that it's about one thing. The one thing that the reducer or diff is inserted in.
NeilsTransit,my friend Fordyka had a gasoline Mk3 in 1988 with a gearbox (diff) 3.9.My friend FT-MK5 has a gasoline DOHC Mk5 with a reducer (diff) 4.1.
Reducers 3.9 and 4.1 should be sought among gasoline Transit.
The efficiency of using a powerful gasoline engine can be increased by using larger wheels, 15 "and 16" from Mk6.
I use my 4.56 on Mk3 on the front axle of the wheel 15 "and 16" on the rear axle.

I tried playing around with different tire sizes but with my Transit the maximum tire size was already on the vehicle (195/80/14/C) and they didn't make bigger diameter wheels for this model without changing axles etc (well not in Australia) so I bought some wheel adapters made especially for the VG 'H' axle so I could put on 15" wheels with the max size tires !95/80/15/C but the difference was not much (about 3-5%) and not enough to comfortably travel at 100kph without over revving the engine. Maybe 16" wheels could have been fitted but it would have meant modifying the wheel arches and also the tracking would be different and I'm not an engineer, only a gardener so when one day Minormat t mentioned that Zephyr diffs may fit I stumbled across a guy that specializes in diffs who actually had a good condition zephyr diff sitting in his shed and so as they say the rest is history
PS: I've gone back to the original sized wheels for this vehicle as I it tracks better and anyway the larger wheels are no longer necessary

[cherniy_chack]

NeilsTransit,for a gardener, you know cars very well!
I wish not to have problems with your upgraded diff.

[NeilsTransit]

thanks to everyone for their help it's been a massive learning curve and I'm truly grateful for all the assistance offered and i couldn't managed it alone

[Hondekop]

Never heard an axle referred to as a bridge before...

Well, I don't know what languages you speak

[vanfox]

Let us know how well the new diff runs. What's the difference in kms per 1000 rpm?

[DodgeRover]

Did you ever manage to sort the box out so it would go into lockup/ overdrive?

[NeilsTransit]

Let us know how well the new diff runs. What's the difference in kms per 1000 rpm?

The way things were was 80k's@3,000rpm now it's 100k's@3000rpm BUT before I was running 15"wheels whereas now I've gone back to 14" Ford wheels which are the original wheels. I was using wheel adapters to run 15" Holden wheels but I'm not sure of the legality of using them so now it's the 14" Ford wheels as previously stated. Apparently there are some non Ford 15"wheels that will fit without adapters but as yet I haven't found any
Of course now the speedo reading is wrong but I've bought a speedo corrector called Yellow Box but as yet haven't installed it

[NeilsTransit]

Did you ever manage to sort the box out so it would go into lockup/ overdrive?

Yes lock up has been working for a while now and it was a dodgy connection in a wire going to the ECU so maybe I needn't have bought a new lock up mechanism and installed it in the autobox but hey I've learned a lot in the process so it's all good. I've also installed a switch which turns the lockup off or on and that has been handy to have