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[TheBoy]

This is starting to do my head in...

Some of the details may be a bit sketchy, as a lot has happened with this car over the past 2 or 3 months, and old age and 2 similar looking Omegas confuses simple country folk like me.


Nail the brakes, it seems fine, or at least as fine as the Heinz 57 tyres allow. Its medium braking, moreso at 50+, the car noticeably pulls right, requiring steering left enough that releasing the brakes causes the car to snap left.


When not on the brakes, car drives pretty straight, though does tend to tramline as its running quite a lot of front camber.



Swapped tyres front to back (which cured my chronic understeer in right hand corners, but introduced an interesting oversteer issue on the same bends ).

Rebled brakes

Filed down front pads in cause on contamination

Its had different springs and shocks, no change

WIM'd

Different wheels and tyres



There is some debate if it was pulling left at some point, rather than right....

[Jimbob]

what state are the wishbones in?

brake calipers moving freely?

[Lazydocker]

This car already has polys, yes?

Has the fluid been changed or just bled?

Idler in good condition?

Finally... Is the pitman arm on the steering box pointing straight down the car in the straight ahead position?

[albitz]

Sticky cliper has to be the favourite imo.

[Kevin Wood]

IMHO, you've either got very uneven braking side-to-side or something in the suspension is moving under braking. Wishbones would be the first port of call, IMHO, followed by the track rods and idler.

Could always be a problem at the back, of course.

[cem_devecioglu]

I think you already checked front setup and geometry..
 
if the tire pressures and tire shapes are ok, the only option is braking forces are not equal
 
which I also have and measured during mot  

[cem_devecioglu]

also a slightly buckeld wheel can change things drastically..

[hotel21]

Is this the one that's just been mot'd?  If so, what were the brake roller readings as it's an easy rule out if the efficiency is basically the same across an axle. Just ensure that there is no excess on one side or the other. If you don't have a note of readings perhaps your friendly (?) testing station may assist.   

[TheBoy]

Wishbones are original, but have been polyed at the front, and MDTM pressed in some rears.

No play felt in either track rods, or in idler.  Will check pitman arm more precisely, but looked pretty straight earlier. Slight play in OSF wheel bearing.

No play found in rear when I was bleeding, though thinking about it, handbrake was on, and in Park. Doh.  Bleed via usual methods, including clamp hoses and forcing caliper in.  Front calipers are free on the slide pins. Rear pad wear looks even - not sure of any other way of checking rear calipers.


Was MOT'd in this condition. No printout, only adviso was the exhaust - normally he tells me about anything not right.  If it was brake balance, would I be expecting the pull at all speeds and all braking types?


I can try to groom gayboy into giving the bushes a once over, as thats his fetish, but beyond that, really running low on ideas...

[cem_devecioglu]

Wishbones are original, but have been polyed at the front, and MDTM pressed in some rears.

No play felt in either track rods, or in idler.  Will check pitman arm more precisely, but looked pretty straight earlier. Slight play in OSF wheel bearing.

No play found in rear when I was bleeding, though thinking about it, handbrake was on, and in Park. Doh.  Bleed via usual methods, including clamp hoses and forcing caliper in.  Front calipers are free on the slide pins. Rear pad wear looks even - not sure of any other way of checking rear calipers.


Was MOT'd in this condition. No printout, only adviso was the exhaust - normally he tells me about anything not right.  If it was brake balance, would I be expecting the pull at all speeds and all braking types?


I can try to groom gayboy into giving the bushes a once over, as thats his fetish, but beyond that, really running low on ideas...

at low speeds nope.. but at higher speeds you will definitely feel the steering pulling to a side..

[cem_devecioglu]

it shows itself more under urgent braking where you apply maximum force..

[TheBoy]

it shows itself more under urgent braking where you apply maximum force..

I need to test again, but I nailed the brakes earlier, duw to some idiot putting a hump back bridge on this country lane, and it braked well...

...seems to be that medium force braking that does it....

[cem_devecioglu]

any chance of air in brake lines

[TheBoy]

any chance of air in brake lines

That was a possibility, thus I have rebled the brakes over last couple of days.  I've also activated the ABS return pump several times, though not while bleeding, as a pain to do on your own...

[tigers_gonads]

Front flexy hose breaking down causing it too bulge during hard brakeing then return back to normal