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[Shackeng]

Got Runway 926's on the Estate - no issues, runs true without wander.  Had full geo done a few months back (July last year)

 

[steve6367]

Got Runway 926's on the Estate - no issues, runs true without wander.  Had full geo done a few months back (July last year)

What am I doing wrong 

[05omegav6]

Could be a slight variation in set up or component wear... Even tyre pressures have a bearing...

[dbug]

Run pressures on the Estate as 34 front 36 rear

[steve6367]

I'm on 32 all round so will try a slight increase. Going to try swapping the 'evergreens' back onto the fronts as it was. Failing that given wishbones, all track rods and drop links are new what other components should I be checking? Could the wishbones (atp) have failed in 1000 miles? The symptoms are very much like it was before I changed them.

Steve

[Shackeng]

I'm on 32 all round so will try a slight increase. Going to try swapping the 'evergreens' back onto the fronts as it was. Failing that given wishbones, all track rods and drop links are new what other components should I be checking? Could the wishbones (atp) have failed in 1000 miles? The symptoms are very much like it was before I changed them.

Steve

A set of Delphis did in only a few more miles a few years ago.

[05omegav6]

Agreed re the Delphi ones... I had a similar experience with them, as did a member in the States

If fitted correctly, ie tightened with the car on the ground, then there should be no issue

Other items which can be overlooked are the front top mounts as they deteriorate over time, or the steering idler, as play in this can cause directional oddities...

[chrisgixer]

With rubber bushes, tighten bolts wheels loaded, then set up for full geo, THEN fit new tyres once all is well.

Poly the same but it's not necessary to tighten the bolts wheels loaded.


If bushes are suspect, they need examination.

[Shackeng]

Agreed re the Delphi ones... I had a similar experience with them, as did a member in the States

If fitted correctly, ie tightened with the car on the ground, then there should be no issue

Other items which can be overlooked are the front top mounts as they deteriorate over time, or the steering idler, as play in this can cause directional oddities...

Thanks Al, best way to check these is...?

[05omegav6]

Remove the top nut and plate, there's still another nut underneath it so it won't ping off, and check for cracking and or undo flexing as you push down on that side... both should be obvious when you see them...

Also with the plate removed, have an assistant turn the wheel lock to lock, car on ground and engine on/off to suit... looking for torsional tearing...
 
Also, with the top plate resecured in place, hold the plate as an assistant turns the wheel lock to lock... car on ground (engine on or off... makes no odds). You're looking to FEEL any roughness/sticking in the support bearing as the strut turns. No roughness etc then bearing is ok, any hint then it probably needs replacing

The bearings can be repacked with grease if their just a bit rough, but as you need to remove them (and the top mount) to do this, you might as well just replace them both imho

[Shackeng]

Remove the top nut and plate, there's still another nut underneath it so it won't ping off, and check for cracking and or undo flexing as you push down on that side... both should be obvious when you see them...

Also with the plate removed, have an assistant turn the wheel lock to lock, car on ground and engine on/off to suit... looking for torsional tearing...
 
Also, with the top plate resecured in place, hold the plate as an assistant turns the wheel lock to lock... car on ground (engine on or off... makes no odds). You're looking to FEEL any roughness/sticking in the support bearing as the strut turns. No roughness etc then bearing is ok, any hint then it probably needs replacing

The bearings can be repacked with grease if their just a bit rough, but as you need to remove them (and the top mount) to do this, you might as well just replace them both imho

Excellent, thanks, and what is the best way to check the idler, just visually for play from underneath with steering wheel movement, and wheels on ground?

[chrisgixer]

Any vertical play in the idler, replace. If you try really hard, it should only flex a fraction.

Top mounts, lift bonnet, visually check the gap between the top plate and the body(turret) if it starts looking like about 10mm then it's at the very best, a bit tired. A new set will see that gap reduced to a couple of mm.

This probably applies to any omega that's still on original top mounts, esp those with the heavier engines... At best still useable but really should replace them.

Most bearings are slightly pitted as they spend most of the time in one position/dead ahead. They've had the entire weight of the front of car sat in them since manufacture so....

[Shackeng]

Any vertical play in the idler, replace. If you try really hard, it should only flex a fraction.

Top mounts, lift bonnet, visually check the gap between the top plate and the body(turret) if it starts looking like about 10mm then it's at the very best, a bit tired. A new set will see that gap reduced to a couple of mm.

This probably applies to any omega that's still on original top mounts, esp those with the heavier engines... At best still useable but really should replace them.

Most bearings are slightly pitted as they spend most of the time in one position/dead ahead. They've had the entire weight of the front of car sat in them since manufacture so....

Thanks Chris, is that checked by steering wheel movement?

[chrisgixer]

Both, by hand, and by looking through from the rear of the wheel arch as your beautiful assistant that makes lovely biscuits moves the steering.

As you get to know them, both tests will give a guide as to how little play as acceptable, considering the weight of the car on it while in a bend. Etc...

[Shackeng]

Both, by hand, and by looking through from the rear of the wheel arch as your beautiful assistant that makes lovely biscuits moves the steering.

As you get to know them, both tests will give a guide as to how little play as acceptable, considering the weight of the car on it while in a bend. Etc...

 
When are you bringing SWMBO down for the pub lunch I promised you?