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BC Coilover Settings n query...

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Old 31 July 2009, 02:23 PM
  #31  
Ben@Driftworks
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Yep you'll find with all the messing with ride heights that the alignment is now miles out, having the toe out of whack will give you all the pulling symptoms you describe above, especially if you've got a decent amount of camber. As the camber of the road changes which tyre is doing the most work will switch from side to side, since the toe is out, it'll launch it from side to side making it pull, and it'll be exaggerated under braking/acceleration when the load is increased.
Old 31 July 2009, 06:24 PM
  #32  
t7srt
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Originally Posted by scoobyc
Hi. The caliper is an assumption its getting hotter as the paint has changed move of its colour. This could be total BS on my part tho....

Had the car on the track many times. My handling problems started at brands hatch back in Jan after i decided to try some slidage and went 360. Didnt hit anything, wasnt even on the track, it was on the massive expanse of tarmac at the end of the day.

I have had GRD fully setup my which made no difference, i have changed to ALK as i suspected those bushes were gone which made some difference, finally i changed the steering rack which seemed to fix the issue. I was never more than 90% sure it was fixed. I then did a track day at bovington and the car was fine cept the PS overheated a couple of times.

Tyres are all prada spec 2's all decent tread all round. My other set of tyres makes the steering more off, so perhaps either those tyres are screwed or they exhasibate whatever is wrong.

Only had my set of cut slicks on for a quick blast and it felt ok before i did this suspension.

Brakes are stock except braided lines. I put ds2500's in for the track, and am on another new set of disks afted my last lot broke. Actually. interestingly, it was the front left which had the worst crack in it. adding substance to that caliper getting hotter.




FFS another day wasted....

Ive checked everything today.

FL
60.5 RH
31.5 Suspension Length
8.4 between rings
=Spring Length
-2camber


FR
60.5RH
33.3 Suspension Length
10.3 between rings
=Spring Length
-2camber

RL
60.5 RH
34.6 Suspension Length
12.4 between rings
=Spring Length
-1.7camber

RR
60.5RH
37.0 Suspension Length
14.65 between rings
=Spring Length
-1.7camber


Check my old suspension roughly and they were all roughly the same height/total length.

Car handling is a mess, its squirmy on accelleration and braking and i have no faith in it to push it hard. (however when cornering it feels balanced n grips like hell, lil bit understeery if anything which is ok)

The only consistent reaction in the car i can mention is. When driving the car pulls slightly to the left. When driving straight, i can feel weight turning the steering wheel anti clock wise. When i accellerate i can feel this weight increase.

It kinda feels like the tracking is off and ill take it down the local monkeys to get checked.

You know the centered steering wheel, well it kinda feels like its centered when its turned clockwise about 5 degrees.



Notice the differnce in the total lengths of my shocks is circa 2cm different in opposite corners. Can anyone please advise why this may be the case n wtf is happening? and yet my ride height is exactly equal.... Will corner weighting solve this definitivly?

i REALLY dont wanna spend 400 quid getting it setup (alignment n corner weighting), especially if that doesnt fix the problem!

Who are the reputable scoob specialist in the berk area? Or alignment specialist in the berks area?

As for the Braking. That felt alright today much much less squirmy than before but still not ace. Felt more like a real car tho. I exercised all the pistons in each caliper. Noticed, when free, the top move first then the bottom. The front right caliper, bottom inside most piston was slightly less free than the others so worked it well it it was perfect. Not sure that was enough to cause anything tho..











Can i atleast get longest reply award or "currently most pissed off member of SN" award?




Not if I multi quote yours and mine, Lol


On a serious note though, Listen to others and pay the money to have it setup, Also you say the handling issue was back in january, was this before you fitted the coilovers?
If so what ever you do to the struts isnt going to make a difference to the handling, I'd say you have bent a control arm or something, I have spent no time at all setting my car up, made sure both struts were the same length and aslo both on the rear too, remember the struts are different lengths anyway front to rear so dont make front to rear the same length.
It has had perfect handling since fitting but very unsettled under braking,, Acceleration and cornering was fine, I put this down to cheap non matching tyres on my 18's,
Today I found the time to fit my silverstone cut tarmac tyres onto my 17's and went for a very hard drive with fast straight road with a round about at each end, Going from one to the other. With these tyres now fitted I get no squirm under heavy braking and where ever you point it it goes screaming for more, The car was stable mid corner and very predictable with a nice 4 wheel drift exiting the roundabout,

I havnt had my geometry done yet and there was no handling issues previous to fitting the coilovers. This is why I reckon you have another underlying issue that isnt your coilovers,

I would cancel the corner weighting as this isnt going to help your situation, may even make it worse, As the other guys said, you need to take a few steps back and look at whats causing poor handling, you shouldnt get any torque steer under acceleration.

Hope tha thelps
Old 31 July 2009, 08:15 PM
  #33  
scoobyc
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Originally Posted by t7srt
Not if I multi quote yours and mine, Lol


On a serious note though, Listen to others and pay the money to have it setup, Also you say the handling issue was back in january, was this before you fitted the coilovers?
If so what ever you do to the struts isnt going to make a difference to the handling, I'd say you have bent a control arm or something, I have spent no time at all setting my car up, made sure both struts were the same length and aslo both on the rear too, remember the struts are different lengths anyway front to rear so dont make front to rear the same length.
It has had perfect handling since fitting but very unsettled under braking,, Acceleration and cornering was fine, I put this down to cheap non matching tyres on my 18's,
Today I found the time to fit my silverstone cut tarmac tyres onto my 17's and went for a very hard drive with fast straight road with a round about at each end, Going from one to the other. With these tyres now fitted I get no squirm under heavy braking and where ever you point it it goes screaming for more, The car was stable mid corner and very predictable with a nice 4 wheel drift exiting the roundabout,

I havnt had my geometry done yet and there was no handling issues previous to fitting the coilovers. This is why I reckon you have another underlying issue that isnt your coilovers,

I would cancel the corner weighting as this isnt going to help your situation, may even make it worse, As the other guys said, you need to take a few steps back and look at whats causing poor handling, you shouldnt get any torque steer under acceleration.

Hope tha thelps

not if i quote your multiquote quote :P



problem with internet diagnostics is its reversable. I cant also describe the symptoms properly.

nothing is bent, everything has been checked out or changed.

Last thing for me to do is corner weight and alignment. Dave is going to test drive it after that to see if the car has an issue or my head.

The last 3 days of driving to work have been fine. Can feel the camber etc is out, and i think corner weighting will improve it to. but it goes straight. Im putting the torque steer feeling down to imperfections in the road whilst running stupid neg camber.

Soon as i put suspension to be symmetric the braking diving has mostly stopped. So im sure thats all good.

Dont worry ive spent hours n hours n hours looking, checking, setting up, test driving the car. Literally 5/6 sold weekends of messing with it.

Hopefully dave will give it an ok. If not. the only thing left is bushes.
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