Saph to 3door?

[Adam B]

Couple of queries.

Will a rollcage from a saph fit a 3 door shell?

Equally, are the rear beam, trailing arms etc the same?

[robrs2]

The sierra floor pans are the same. But sunroof rollcages are shorter. Some saff cages are made with the main hoop further forward dont know why as its not correct.
A mate fitted an XR4i cage into his XR4x4 that went in ok. Its harder to get a 3 door cage into a saff as the door opening is smaller.

Beam will fit but ARB is different on a 3 door unless its a mk2 3 door shell then it all fits.

[Adam B]

Hmm, rear beam news not great, as it's not quite so easy as I'd hoped.

Really need a new beam and trailing arms etc due to a lot of rust on the current stuff, so basically I can use all saph parts apart from the ARB which I'd need to source from a 3dr cossie? (shell is a base model)

[Adam B]

I've sourced a complete 4x4 rear end with an LSD.

Apart from the ARB, I'm hoping this will be ok

[dangerousdave]

The 4x4 diffs are weaker than 2wd as they are smaller so bare that in mind if putting a lot of power through it.

[Adam B]

We're not going crazy power, prob around 160ish, it's gotta be stronger than a base spec diff anyways

[Adam B]

Right... More findings

The base spec 2wd 3dr rear arms have a wider mounting point for the bottom of the rear shocks, and use an m10 bolt

The 4x4 saph has narrower brackets and uses shorter m12 bolts

The Gaz coilovers we have are "2wd" ones, yet the bottom of the rear shocks are of the narrow m12 fitting.

Current plan until the 4x4 rear end is refurbed is just to drill out the 2wd rear end to 12mm and use some washers to pack out the gap left.

What I don't want to do is go through all the effort of refurbish the 4x4 rear end to find it doesn't fit due to something else.

[Adam B]

Also:

Fuel tanks... Are they all the same? There seems to be a massive difference in cost, but they all look alike to me. The tank currently on the 3dr shell has gone porous

[robrs2]

Tanks are the same shape, but different types. Carb, injection external pump and injection internal pump.
Can't remember if there was a difference between hatch and saloon.
They were all listed on www.clevelandpanels.com

[Adam B]

Cool. Means that any tank can be adapted

[Adam B]

on disc models are all the rear calipers the same throughout the sierra range?

[robrs2]

All none vented are the same. 4wd cosworth are wider

[Adam B]

And the hubs are the same? Just the calipers/carriers that are different?

[robrs2]

All none cosworth rear disk sierra's have the same bearing housing which the caliper bolts onto. The cosworth Sierra's and escorts have longer lugs the caliper bolts onto due to larger discs.
The bearings and outer drive flange are the same on all the above models.
So to fit cosworth rear discs to a lower model you change the bearing housing for the cosworth one and the calipers will still fit if the none vented 2wd cosworth discs are used. If you want vented rears then you will also need the 4x4 cosworth rear calipers as they are wider for the vented disc.

[Adam B]

right, i'm still querying this...

i have a base spec 3dr mk1 (1.6 pinto, 4 spd, rear drums, push in shafts etc)

its being turned into a drift car, we're planning on running a welded diff. (until it explodes, at which point we'll replace it with another welded)

whats our best option for the rear? can a push-in type rear diff have the bolt on flangesshafts fitted (or is it a completely different and will they fit the drum brakes?) what diff units are compatible with our current rear subframe?

[robrs2]

You will not break a diff unless you put 400+ horses through it, unless its worn.
The push in diff is different and cant have the flange type fitted unless you fit a different centre in the diff.
Best option is to weld up an lsd diff xr 4x4 or cossie 4x4. If you can find a granada mk3 2.0 then it has a 7" open flanged diff that can be welded and fit too.

Mine is a 7 1/2" 1994 scorpio diff welder in a 7 1/2" beam with cossie 4x4 arms and Scorpio cossie ARB. Rear floor in mine is like a saff so the ARB is different to the 3 door.


Are you using the xr4x4 rear beam?

[Adam B]

Not using anything until I understand sierras better.

I thought they were all interchangeable.

[robrs2]

7" diffs cases & CWP are all the same, several ratios though. The centre of the diff is the different bit.
There are: open diff with push in. Fitted to most 1.6 to 2.0L sierras
Open diff with flange, 100mm CV Fitted to 2.0L Sohc or Dohc with ABS. Granada mk3 2.0 Sohc
LSD with push in shafts, Rare dout you would find one. German XR4i mk1
LSD with flange 100mm CV. Fitted to most 4x4 sierra's 2.0 Dohc and 2.9 V6. Sierra Cosworth 4x4 and Escort Cosworth. Cosworth had an uprated lsd.

The Dohc Sierra's can be fitted with either a 7" diff or a 7 1/2" on the later models, its pot luck which.