getting grip with your rear suspension

[charged]

9.5kg springs would be like going to full roll stiffness, get some 6.5kg and work your way up, with that much HP you may want it fairly soft in the rear for power down and buy some new semis, the difference would be huge

[charged]

You would be speaking of Leighs car, a good turbo IP car doesnt make the power you make but would have a 100ft/lb or more of torque. Its a characteristic of a restricted turbo engine. It would actually accelerate a bit quicker than your.When the drags were open is SA Mark Short took his 120y sr20det powered IP car for a run at AIR and it ran a mid eleven, it only made 190 odd kwatw buts its torque what makes cars accelerate.

Plus leighs car has had plenty of development and he is a handy steerer

[Konakid]

agreed, id even try 5's in the rear with some new 225 tyres but to be honest it must be a very hard car to drive fast with that much power, i wouldn't be surprised if you ran faster times on your original 18psi!

You are delaminating tyres circuit racing, you shouldnt be letting them spin up that much, go easy on the loud pedal!

[s14seriesII]

the cars issue is more so that it has no real corner speed..

i have to turn in very smoothly and slowly and wait a long time after the apex to feed to power on..

power level is not an issue as the throttle is not an on/off switch

i will try new tryes, soft springs and softer sway bar or no rear sway bar and see what happens..
but have the feeling a watts link and correct roll centre is going to be a must.. who has played with changing the panard rod height ?

[Konakid]

hmmm.

have you got a front swaybar?

get a 24 to 27mm if running an 18mm rear bar.

what front springs do you have? they may be too stiff also.

[s14seriesII]

yes 24mm have adjusted it as stiff as it goes

the car feels very compliant on the track and has quite a lot of suspension movement like nearly 2 inches of compression.. and more on the front

the front end could even go stiffer as its just got so much grip its not funny..

[Simon-KE70]

i'd be running softer then 5kg's... try something like 4.5 kg's and quality shocks. will go a LONG way to getting grip.

[s14seriesII]

the only thing better than bilsteins is d.m.s ?

[charged]

The best shock is only as good as its valved, Im presuming the bilstein has set valving for compression and adj bump. A lot of guys that I know that run bilsteins have slightly heavy compression with a softer spring. We run Koni on all our 4 ip cars and they are great plus the distributor in Adelaide knows what he is talking about and gives great service. We tried a set of bilsteins on the nephews IP car and it went backward, valved wrong and the after sales service was rubbish

There is plenty of better featured shocks than bilsteins Proflex, Penske just to name two

[Hokey]

slydar played with his panhard mount in his current maybe previous 86?? and also ran equal length trailing arms. stock ke springs and r1r's seem to work for leigh pidwell haha