CarlB Posted July 9, 2021 Share Posted July 9, 2021 Does anyone have some good track alignment settings for a wide track S3? I would be interested in everything. Ride height or rake, camber, caster, and toe. Link to comment Share on other sites More sharing options...
Vovchandr Posted July 16, 2021 Share Posted July 16, 2021 @CarlBWas going to reply to this earlier but forgot Here is what I have " Core components Year 2002 imperial chassis with widetrack and K Series (140-145hp estimated), 6 speed box, 3.92 ZF LSD Powerflex polyurethane bushes everywhere Nitron dampers by Meteor Motorsport, re-valved early 2016, with Eibach springs Setup Weight (without driver): 520kg with approx. 20 litres of fuel, two thirds of a tank Total weight: 580kg (yes I need to eat more pies) Corner weights are set to equal diagonals which I prefer over equal fronts. Front left: 128kg Front right: 136kg Rear left: 154kg Rear right: 162kg Ride heights (probably not a lot of value since I'm not sure where they're measured from) Front left: 118mm Front right: 118mm Rear left: 134mm Rear right: 132mm Average rake: 15mm Geometry Caster: 7.2-7.4 (full forward on wishbones) Front camber: -2.7 (I might increase this for track - one turn of the ball joint should be worth approx. 0.3 degrees) Rear camber: -1.4 Front toe: 2mm in each side (this is for road only, I change to 2-3mm toe-out for track) Rear toe: 2mm in each side All of the above was with virtually new Avon ZZR tyres (185/55/13 front, 215/55/13 rear) set to 17.5psi Tyre pressures: 20psi starting/cold pressure (all round) Front roll bar: blue (9/16") Rear roll bar: +2 (0 being disconnected, 4 being stiffest) Radius arms set to lower position Front springs: 225lb/in Rear springs: 150lb/in (plus 4lb/in helper springs) Front dampers: -8 from full hard Rear dampers: -6 from full hard" And this from the assembly manual Link to comment Share on other sites More sharing options...
CarlB Posted July 16, 2021 Author Share Posted July 16, 2021 Thank you - Those specs are very helpful. Hopefully I can get the car aligned this weekend Link to comment Share on other sites More sharing options...
Vovchandr Posted July 16, 2021 Share Posted July 16, 2021 1 minute ago, CarlB said: Thank you - Those specs are very helpful. Hopefully I can get the car aligned this weekend For the record let me amend my statement. When I say "what I have" I meant, what I came across online from somebody else. I actually haven't done my alignment yet but I would have followed the two references I gave you myself. I have those printed as my guide myself. Link to comment Share on other sites More sharing options...
CarlB Posted July 16, 2021 Author Share Posted July 16, 2021 I would be a little careful with the front toe out. Lots of people like it and you might. It makes the car turn in really quick. You need to be slow with the wheel and get use to it. Link to comment Share on other sites More sharing options...
dallasdude Posted July 16, 2021 Share Posted July 16, 2021 Looks pretty good to me. For track use lots of negative camber, positive caster, and toe out in the front. Always slightly toed in in the rear. This is a lot of caster however and will increase steering effort. When it says full forward on the wishbones....that should be the lower wishbones. Top wishbones are pretty well fixed. The spring rates are a little light for serious track work but probably a compromise. These tire pressures seem low but I'm not used to using these tires. Two things people miss if the car is lowered very much for track use. You need to put bump steer shims under the steering rack to offset the lowering. You can't use toe plates to accurately set the toe because on most wet sump cars, the rear tape is deflected by the oil pan. Link to comment Share on other sites More sharing options...
KnifeySpoony Posted July 17, 2021 Share Posted July 17, 2021 Random question re: alignment changes. Does changing camber affect the toe in these cars? ie if adjust camber, do I need to reset toe? Thanks Link to comment Share on other sites More sharing options...
dallasdude Posted July 20, 2021 Share Posted July 20, 2021 (edited) Yes, it will affect the toe. You are moving the upper pivot point of the upright out or in to change the camber, so the will affect the relationship if the tie rod ends to the spindle (and wheel). Edited July 20, 2021 by dallasdude clarity Link to comment Share on other sites More sharing options...
Anker Posted July 20, 2021 Share Posted July 20, 2021 It is safe to assume that all alignment setting affect each other. That includes ride height! Link to comment Share on other sites More sharing options...
KnifeySpoony Posted July 21, 2021 Share Posted July 21, 2021 13 hours ago, dallasdude said: Yes, it will affect the toe. You are moving the upper pivot point of the upright out or in to change the camber, so the will affect the relationship if the tie rod ends to the spindle (and wheel). That's what I thought but wasn't sure. I think some cars the camber can be changed independent of toe but not sure if it's actually possible. Link to comment Share on other sites More sharing options...
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