Pig Posted April 11, 2009 Share Posted April 11, 2009 Have changed all the suspension components apart from track rod ends and anti roll bar link (both checked and are fine). Have the tyre pressures checked and it fully 4 wheel aligned but its still pulling to the left. Have you got any other idea's??? Jon Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted April 11, 2009 Share Posted April 11, 2009 Check you tyre pressures again. I had a tyre that would let itself down at speed which showed up as pulling to that side. It stayed properly inflated if I stayed below 70 how very bizarre. Other than that you must be looking at the drive train as there isn't anything else in the geo to look at?? Quote Link to comment Share on other sites More sharing options...
Dnk Posted April 11, 2009 Share Posted April 11, 2009 (edited) Check the circumferance of the tyres incase there differant, best done with the car jacked up and tyres set to correct pressure. A tape measure will do the job as long as its not to stiff to bend Edited April 11, 2009 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
Ewen Posted April 11, 2009 Share Posted April 11, 2009 Directional tyres ? Both sides right way round ? Quote Link to comment Share on other sites More sharing options...
Mike Posted April 11, 2009 Share Posted April 11, 2009 Until you said all that other stuff i would have said 'tracking'.. but I'm guessing you covered that? Quote Link to comment Share on other sites More sharing options...
Pig Posted April 11, 2009 Author Share Posted April 11, 2009 It has been like this for a long time, thats why i changed so much stuff. Can't be tyre pressure as i drove straight out of the 4 wheel alignment/tracking place and they did pressures at the same time. Next step is to start measuring subframe etc to see if its twisted and to make sure its been fitted correctly. With ref. Tyres, its done this for as long as i can remember which means it could have been when i got it, or it could have been after turbo fit etc etc. Quote Link to comment Share on other sites More sharing options...
CarlT67 Posted April 11, 2009 Share Posted April 11, 2009 If the geometry has been set up correctly then I would suggest that they would have noticed any misalignment with the subframe etc, if all the wheels are aligned then it must be something to do with the power delivery, could it be the diff distributing to one side more than the other..? Did you leave the geometry place with a neutral thrust angle? Quote Link to comment Share on other sites More sharing options...
Chris and Alana Posted April 11, 2009 Share Posted April 11, 2009 what about brakes being slightly sticky and causing a resistance on one side? Quote Link to comment Share on other sites More sharing options...
SUPRALOOPY Posted April 11, 2009 Share Posted April 11, 2009 Brakes have been checked. Quote Link to comment Share on other sites More sharing options...
plus1 Posted April 11, 2009 Share Posted April 11, 2009 Stop exercising with your left arm and build up the right one a bit more. Sorry, that's the cleanest way I could word it Jon. Ian ( Dragonlady's better half) Quote Link to comment Share on other sites More sharing options...
AndyT Posted April 11, 2009 Share Posted April 11, 2009 You're in Essex Centre of gravity or Wheels in motiion will sort it. It will cost. At the end of the day it will be cheaper than wrecking the car. Quote Link to comment Share on other sites More sharing options...
absz Posted April 11, 2009 Share Posted April 11, 2009 Pump the left tyre up a bit more and let some air out of the other one. Guarantee fix:d:d Quote Link to comment Share on other sites More sharing options...
JamieP Posted April 12, 2009 Share Posted April 12, 2009 Post up the results from the geo setup. Quote Link to comment Share on other sites More sharing options...
Terminator Posted April 12, 2009 Share Posted April 12, 2009 Sorry if this has been covered else where, (in other threads), but can you be more specific about the conditions under which the car "pulls" to the left. Quote Link to comment Share on other sites More sharing options...
Pig Posted April 13, 2009 Author Share Posted April 13, 2009 Check you tyre pressures again. I had a tyre that would let itself down at speed which showed up as pulling to that side. It stayed properly inflated if I stayed below 70 how very bizarre. Other than that you must be looking at the drive train as there isn't anything else in the geo to look at?? checked again today, the osr is down to 23psi and the others are 30 so if anything that would make it would pull to the right? Check the circumferance of the tyres incase there differant, best done with the car jacked up and tyres set to correct pressure. A tape measure will do the job as long as its not to stiff to bend Interesting idea, but due to my constant wheel swaps unlikely...worth double checking anyway. Directional tyres ? Both sides right way round ? Fine If the geometry has been set up correctly then I would suggest that they would have noticed any misalignment with the subframe etc, if all the wheels are aligned then it must be something to do with the power delivery, could it be the diff distributing to one side more than the other..? Did you leave the geometry place with a neutral thrust angle? It also pulls on whilst not accelerating. Whats neutral thrust angle? what about brakes being slightly sticky and causing a resistance on one side? Disk's have just been changed and like dave said, he has checked them. Stop exercising with your left arm and build up the right one a bit more. Sorry, that's the cleanest way I could word it Jon. Ian ( Dragonlady's better half) Pump the left tyre up a bit more and let some air out of the other one. Guarantee fix:d:d Post up the results from the geo setup. Will get the print out and post it up tomorrow. Sorry if this has been covered else where, (in other threads), but can you be more specific about the conditions under which the car "pulls" to the left. I had a search around before posting this up, sorry if i have missed something. The only time the car drives straight is... imagine a normal road, the camber slopes to the left when on the left side. If you position yourself on the road with the camber equal it still pulls and if you get right camber it will drive straight. The things i have tested so far are constand speed, slowing down and on the brakes. Naturally i haven't tested it on boost! Quote Link to comment Share on other sites More sharing options...
CarlT67 Posted April 13, 2009 Share Posted April 13, 2009 It also pulls on whilst not accelerating. Whats neutral thrust angle? I believe the thrust angle is the angle measured from the neutral line running front to back on the car at which the trust force is put through. So for example the angle should be 0 degrees i.e. perfectly acting through the front to rear neutral line of the car otherwise the car will pull either way while accelerating. If you car is doing it when not accelerating then the trust angle cant be the issue. Quote Link to comment Share on other sites More sharing options...
snake Posted April 13, 2009 Share Posted April 13, 2009 hub bearing,ball-joints,steering linkage,weak front shock/spring. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted April 13, 2009 Share Posted April 13, 2009 I believe the thrust angle is the angle measured from the neutral line running front to back on the car at which the trust force is put through. So for example the angle should be 0 degrees i.e. perfectly acting through the front to rear neutral line of the car otherwise the car will pull either way while accelerating. If you car is doing it when not accelerating then the trust angle cant be the issue. You say that but on decel you'll still get a pull from the transmission side as it engine brakes. It would of course be alot more noticeable at WOT for instance when you really push power through the system. Be a bit like torque steer trying to push the back out in one direction. Cars like these its not impossible for them to have been involved in a major accident in their past and be repaired but crabbing down the road but surely a good geo setup would sort that out anyway? FWIW mine only pulled when the tyre went proper flat and only on accel. Quote Link to comment Share on other sites More sharing options...
JustGav Posted April 13, 2009 Share Posted April 13, 2009 Have you check the alloys are true? Quote Link to comment Share on other sites More sharing options...
Pig Posted April 13, 2009 Author Share Posted April 13, 2009 Have you check the alloys are true? No, but have gone through loads of different alloys so that shouldnt be the issue. Quote Link to comment Share on other sites More sharing options...
L18msy Posted April 13, 2009 Share Posted April 13, 2009 Try measuring the wheel centres from front to back with a tape measure,any difference in the measurement will tell you if something is lying back, e.g bottom arm or cradle etc. Geometry set up would probably cover any differences but might make the car not run true. If possible get the car up in the the air and check chassis legs and cradle mounts for any abnormalities. Quote Link to comment Share on other sites More sharing options...
legendswraith Posted April 14, 2009 Share Posted April 14, 2009 Noticed you said the car drives straight when you straddle the camber, from what Chris said to me at CoG you should always slightly follow the camber. So on the left there should be a slight movement to the left, on the right the opposite and straight when you straddle the camber. How quickly is it moving over when you drive as from the posts i assume its more than jsut a slow drift. Trying to remember all that i was told but are you having to run slightly too high negative cambers because of wheel size etc as that can make the car follow the camber more and if the toes are wonky you'll get erratic steering. Out of interest did the geometry place tell you that the subframe would need measuring, or is that your own idea jsut to get it checked Quote Link to comment Share on other sites More sharing options...
Pig Posted April 14, 2009 Author Share Posted April 14, 2009 Noticed you said the car drives straight when you straddle the camber, from what Chris said to me at CoG you should always slightly follow the camber. So on the left there should be a slight movement to the left, on the right the opposite and straight when you straddle the camber. How quickly is it moving over when you drive as from the posts i assume its more than jsut a slow drift. Trying to remember all that i was told but are you having to run slightly too high negative cambers because of wheel size etc as that can make the car follow the camber more and if the toes are wonky you'll get erratic steering. Out of interest did the geometry place tell you that the subframe would need measuring, or is that your own idea jsut to get it checked When on left and center camber the car pulls to the left, when on right it goes straight. The wheels are stock size. It was mine and daves idea about the subframe. I have taken it back to the wheel alignment place today, they are going to put it back on to check it. Quote Link to comment Share on other sites More sharing options...
Pig Posted April 14, 2009 Author Share Posted April 14, 2009 (edited) Right, got the car back and it seems better. At 70mph it almost drives in a straight line. Its still pulling at low speeds but need to do some more miles to test. Edited May 17, 2012 by Pig (see edit history) Quote Link to comment Share on other sites More sharing options...
plus1 Posted April 15, 2009 Share Posted April 15, 2009 If you are travelling on a road with a bad camber that will make it pull, or ruts from lorries. Quote Link to comment Share on other sites More sharing options...
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