Gavan Hood

I notice an advert for 3 door front hubs on ebay that says:

3 door hubs have a much better ball joint design so the wheel works correctly under compression,this is why sapphires feel less stable than 3 doors.

tca's to suit listed tommorow nite.

It hints that TCA's are different as well, is this correct?

I would have though Sapphires would have improved the design and thought the TCA,s were the same...

NUTS RuS

iTrader: (35)

There are 2 types yes.

Nut and bolt design, and pinch bolt design.

Depends what hubs you have.

Gavan Hood

darn it bought sapphire hubs for my 3 door of ebay without realising, is it possible to machine the sapphire hub to work with 3 door setup ? I have to send my shipment to Australia shortly and dont have time to find a 3 door hub at reasonable price.

Gavan Hood

I do have my original 3 door hubs but they do not have ABS which was the reason for buying the other hubs...

NUTS RuS

iTrader: (35)

2wd hubs may be the same, its the 4x4 ones that are different

dojj

iTrader: (3)

2wd 3 door and 2wd saph hubs are different
one has castleated nuts (3 door) and one has the pinch bolt (saph)
you can't really mix and match between the 2 because there is no way to get a pinch bolt hub to accept the castleated nut design (well, not safely anyway)

daz1968

I was led to believe that the 3 door hubs lower the roll centre as well, but do not fully understand what it means.

dojj

iTrader: (3)

hang on, let me find the thread

dojj

iTrader: (3)

https://passionford.com/forum/viewto...968227#2968227

this one might explain things a bit netter

ozcos

Don't know about better depends on what you expect.
The hub is different as is the rollbar and TCA on 3drs
Where hub bolts to TCA the mount is approx 1" lower and is to do with roll centres.
You can fit either as complete set up but don't mix and match (except rollbar)

ozcos

This relates to cos parts as normal sierra is diff again.

Gavan Hood

thanks dojj I appreciate your expert advise
Ozcos, do you have any parts, I have to bring these bits out... but I am pretty sure I will not have the right matching set...

Regards
Gavan

Gavan Hood

This all started with a conversion to ABS...
Which followed with sapphire cossy calipers and discs..
The parts on my3dr are 838830798A IAF34, another set thrown in with some gear look like short ones, and I have a set of sapphire hubs. I would have been happy with my original setup but there is no ABS sensor on there... If I could convert the hub I would be happy but I think it is not possible... now I have a bunch of mis matched parts...
I am gonna post this to the other item as well...
What should I do, I think I have to get a set of 3dr hubs with ABS mounting point... finding them at a reasonable price is gonna be hard...
Any ideas.

ozcos

Gavin,
Why does your 3dr not have ABS sensors??
Are they 4i or normal sierra ones??
The normal 3dr cos TCAs have castle nuts But I am not sure if any pattern ones or any remade batch ford ones would have nylocs.
I personally would worry about them being diamensionally right and not to much about the different nut.
I don't have a huge amount of spares just really enough to keep both my cars running but I can always help with dimensions or pictures.

dojj

iTrader: (3)

if you have the pinchbolt on the hubs at the moment you will have to find 3 saph hubs
if you don't then you might be able to tap some normal sierra hubs to accept the calipers from the cossie
all you need to find are a set of abs hubs from any later spec 2wd sierra 90 onwards

Gavan Hood

The car is an XR4Ti, which was manufactured in germany in no 87. I has the ABS sensor cables tied to the caliper but not abs sensor mount on the hub. Wierd, I bought a pair of sapphire hubs and sensors before finding out that the TCA arms are different etc... my TCA arms are the longer ones which explains why it handles great but wears tires unevenly... I would like to keep the geometry...
Believe me I wish they had the mounts...

Regards
Gavan

ozcos

You basically need the Proper 3dr hubs and it should all fit together OK then although I would be interested to know how much neg camber this will give.

There is also a ABS control module that you might want to check is there in the car.
Not sure where it would be on the XR4Ti but on XR4x4 and 3dr cos its on the R/H/F A pillar.Or the saphs had it on the passenger side behind the dash I think have one of these somewhere if you get stuck.
What about your rear hubs as the control unit will need all four signals to work or will just switch off.

dojj

iTrader: (3)

the rear is going to require at least the wishbones and probably the driveshafts as well to make it work propelry

i'll snap some pics when i get back to show you what i mean, if you have a look at your rear end you can see if the holes are there or not

dojj

iTrader: (3)

you need the wishbone to take the abs sensor
you need the driveshaft to have the litle pickups to sense the sensor

Gavan Hood

I have sapphire rear end.... which I am told has the sensors . also have complete ABS system from sapphire... The only part I am unsure on is the high pressure return valve, on the rs500 diagram it is a specific item yet the guy I bought the valve block etc off assured me that on the sapphire this was combined into the valve block,

Will start looking for 3door front hubs... anyone know of some at a reasonable price in UK ?

Thanks
Gavan

dojj

iTrader: (3)

if you are looking at the 3 door diagram, it's totaly different ot the saph one
and the later cars had different plans too

whats more confusing is that the later cars also had seperate valve blocks, whereas the earlier cars had the intergated with the abs main assembly

THEN you have the issue of which master cylinder set up you have, they point different ways on different engine bays depending on where the most heat is going to be applied, the resivours are on opposite sides on the cossie cars to normal set ups

Gavan Hood

Do you know when the sapphires started to ship the pinch bolt design, would a 1989 Sapphire be a nut and bolt design or pinch bolt or possbly either...

ozcos

Gaven,
The castle nut TCAs are only on 3dr any saph pt. will be pinch bolt.
resovoirs are different on 3dr to 4x4 not sure on 2wd (memorys going LOL)
Pm me your e-mail and I will send you pics of everything you need to anwser your questions,

Mark