Discussion
Hi all look info on V8s front HUBs , are they stand Ford part or did T V R modify them ? As I have had a problem with the near side wheel bearing So I have perchased a second hand hub and overhaul it to fit in place of the original just in case there is a problem with it , as I have had the bearings changed twice many thanks
Graham
Graham
Bog standard Sierra I believe.
Something a bit strange going on if you've got through two pair of wheel bearings? Even "Chinese" bearings should last longer than that!
Something a bit strange going on if you've got through two pair of wheel bearings? Even "Chinese" bearings should last longer than that!
geappleton said:
I have had the bearings changed twice
Without stating the obvious but are you torquing the big nut up correctly or has a garage been doing them?Edited by phillpot on Tuesday 23 January 17:07
When I bought the car the front wheel bearing was sloppy so when it went in to having some body work done I got them to renew the wheel bearing but some time later luckily on the way to a club night the bearing seized So I took it back to then to replace , I never check it at the time of returned , its was some time later that I checked it and it was the same as it was at first so I decided to get a spare hub myself and over haul it using the hydraulic press at work to fit the new bearing , but in the meantime someone said that they thought that the hubs where modified by T V R .I was just making sure as a don’t want the car stuck on axle stands if it’s different.
Griff ones are not the same. I think the Griff uses the Cosworth version of the same part and the S is normal 2wd sierra without the ABS sensor.
At least if you bolt a Griff brake caliper and bracket onto an S upright you have to change the disc as the Griff ones are the wrong height.
The hub afaik is standard ford, the upright may well not be.
Where the mcstrut has been replaced with the TVR top balljoint adapter on mine the threads for the pinch bolt have been drilled out and a longer bolt fitted with a nut on it (though I suppose that might not be original TVR).
I am not certain whether the bottom ball joint taper is the same as the ford, certainly previous threads on the subject have suggested otherwise. I never got as far as actually checking though. I've been wrong about things in the past often enough though so check rather than assume either way if for some reason you want to change one.
At least if you bolt a Griff brake caliper and bracket onto an S upright you have to change the disc as the Griff ones are the wrong height.
The hub afaik is standard ford, the upright may well not be.
Where the mcstrut has been replaced with the TVR top balljoint adapter on mine the threads for the pinch bolt have been drilled out and a longer bolt fitted with a nut on it (though I suppose that might not be original TVR).
I am not certain whether the bottom ball joint taper is the same as the ford, certainly previous threads on the subject have suggested otherwise. I never got as far as actually checking though. I've been wrong about things in the past often enough though so check rather than assume either way if for some reason you want to change one.
I think the whole lot is different on the Griff.
And I think the OP is on about changing the whole upright assembly.
However TVR Parts list one wheel bearing for v8s/griff/chim and another for v6s.
One day I'll wear one out and have to find out (or actually get around to fitting a wheel speed sensor) but at this point I wouldn't like to guess what's actually on there, what it's from or even if it's the same as any other v8s. Everything I look at makes me even less certain.
And I think the OP is on about changing the whole upright assembly.
However TVR Parts list one wheel bearing for v8s/griff/chim and another for v6s.
One day I'll wear one out and have to find out (or actually get around to fitting a wheel speed sensor) but at this point I wouldn't like to guess what's actually on there, what it's from or even if it's the same as any other v8s. Everything I look at makes me even less certain.
zombeh said:
However TVR Parts list one wheel bearing for v8s/griff/chim and another for v6s.
All very strange ... 
... One bearing kit for S Series (doesn't say V6 only or excluding V8) and another for V8s Chimaera and Griffith?Yet "Fordopedia" list just one bearing (excluding 4x4)!
Getting back to the hub, as opposed to the hub carrier (or shall we call it the Knuckle to save any confusion
) there's not a lot could go wrong with it unless perhaps a bearing has seized in the past and spun on the shaft, damaging it?Similarly the same could have happened to the knuckle.
The uprights/knuckles and hub flanges are a standard Ford Sierra (and Granada) part. There are three types:
Standard Sierra (60mm O.D bearings)
Sierra Cosworth 2wd (63mm O.D bearings)
Sierra 4wd incl. Cosworth (68mm O.D bearings)
TVR didn't modify them, they just made an adapter (for the upper swivel to attach to) to slot into the top of it, where the strut would normally go on the Ford. The brake hose/pipe unions also pass through it. Same M12 pinch bolt arrangement as the Sierra, though people often fit a longer bolt and then put a locknut on the end. If the thread's been drilled out on yours, it probably seized in once upon a time, and had to be drilled out.
You couldn't get the hubs & uprights/knuckles muddled up, as the bearings/hubs wouldn't physically fit. The 4wd one is completely different, geometry-wise.
It's been ages since I actually tried to figure out the specs of the bearings, because we use Racetech for parts, but I think the non-Cosworth 60mm spec bearing setup is the one used on the S, and the Chimaera/Griffith use the Cosworth spec. Visually, the uprights are almost identical.
Of course, I've seen Griffiths with the smaller setup, and the S with the larger setup!
If you keep rinsing bearings, it'd be worth checking all the components carefully for damage. The torque setting for these bearings is beyond FT (they're not the 'pinch' type; the ridge on the stub axle prevents the bearing from being crushed). If they're not done up to the correct torque (it's about 250lb ft!) then they can work loose, even with the new locknut fitted.
One thing I often see, is damage to the inner ridge (normally by the last guy to press a bearing out), which means the conical races don't press in evenly. That means there's a point with more load on the bearing, which wears it away prematurely.
edit to add: They may have altered the taper of the lower swivel mounting hole in the upright/knuckle. Can't say I've actually ever checked it, but being that the lower swivel itself isn't a Ford-sourced one, it's possible, so check that out before fitting.
Standard Sierra (60mm O.D bearings)
Sierra Cosworth 2wd (63mm O.D bearings)
Sierra 4wd incl. Cosworth (68mm O.D bearings)
TVR didn't modify them, they just made an adapter (for the upper swivel to attach to) to slot into the top of it, where the strut would normally go on the Ford. The brake hose/pipe unions also pass through it. Same M12 pinch bolt arrangement as the Sierra, though people often fit a longer bolt and then put a locknut on the end. If the thread's been drilled out on yours, it probably seized in once upon a time, and had to be drilled out.
You couldn't get the hubs & uprights/knuckles muddled up, as the bearings/hubs wouldn't physically fit. The 4wd one is completely different, geometry-wise.
It's been ages since I actually tried to figure out the specs of the bearings, because we use Racetech for parts, but I think the non-Cosworth 60mm spec bearing setup is the one used on the S, and the Chimaera/Griffith use the Cosworth spec. Visually, the uprights are almost identical.
Of course, I've seen Griffiths with the smaller setup, and the S with the larger setup!
If you keep rinsing bearings, it'd be worth checking all the components carefully for damage. The torque setting for these bearings is beyond FT (they're not the 'pinch' type; the ridge on the stub axle prevents the bearing from being crushed). If they're not done up to the correct torque (it's about 250lb ft!) then they can work loose, even with the new locknut fitted.
One thing I often see, is damage to the inner ridge (normally by the last guy to press a bearing out), which means the conical races don't press in evenly. That means there's a point with more load on the bearing, which wears it away prematurely.
edit to add: They may have altered the taper of the lower swivel mounting hole in the upright/knuckle. Can't say I've actually ever checked it, but being that the lower swivel itself isn't a Ford-sourced one, it's possible, so check that out before fitting.
Edited by Kitchski on Wednesday 24th January 14:11
It shows
1591389 2wd sierra
6127817 cosworth and
6140418 4wd sierra
The other likely donor of bits isn't in there (Scorpio with a small engine)
Personally I can't see it being possible to wear out anything other than the bearings themselves. It all needs pullers and presses to come apart and a bearing would have to be spinning for a very long time to do any damage either to the hub spindle or to the knuckle.
1591389 2wd sierra
6127817 cosworth and
6140418 4wd sierra
The other likely donor of bits isn't in there (Scorpio with a small engine)
Personally I can't see it being possible to wear out anything other than the bearings themselves. It all needs pullers and presses to come apart and a bearing would have to be spinning for a very long time to do any damage either to the hub spindle or to the knuckle.
zombeh said:
Griff ones are not the same. I think the Griff uses the Cosworth version of the same part and the S is normal 2wd sierra without the ABS sensor.
At least if you bolt a Griff brake caliper and bracket onto an S upright you have to change the disc as the Griff ones are the wrong height.....
I didn't. I fitted the the 260mm disc and caliper which is standard on the Griff 500 to my V8S with no modifications. It was just a straight bolt on job. The height of the standard 'S' 240mm disc is 58mm and the height of the Griff 500 disc is listed as 58mm See HERE.At least if you bolt a Griff brake caliper and bracket onto an S upright you have to change the disc as the Griff ones are the wrong height.....
I think the discs from the 4x4 Seirra were a different height because Ford used a different upright to accommodate the front drive shafts.
v8s4me said:
I didn't. I fitted the the 260mm disc and caliper which is standard on the Griff 500 to my V8S with no modifications. It was just a straight bolt on job. The height of the standard 'S' 240mm disc is 58mm and the height of the Griff 500 disc is listed as 58mm See HERE.
I think the discs from the 4x4 Seirra were a different height because Ford used a different upright to accommodate the front drive shafts.
I also did a straight swap with 260mm, but the confusion reigns when everybody discovers there are two different types of 260mm disc; mk1 and mk2 Sierra had different offsets!I think the discs from the 4x4 Seirra were a different height because Ford used a different upright to accommodate the front drive shafts.
Kitchski said:
If they're not done up to the correct torque (it's about 250lb ft!) then they can work loose, even with the new locknut fitted.
229 to 258 lb ft or 310 to 350 Nm if you're metricafated hansdaal said:
The hub is standard Ford Sierra. But IIRC TVR redrilled/ reshaped the tapered piece that holds the bottom balljoint.
Oh gosh! that is the hub carrier or, as referred to in the Ford parts list, the "knuckle"The hub is the round bit, the bit that goes round, with a wheel bolted to it
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