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Noddy
3rd September 2012, 02:56 PM
I picked up my 86 on Friday from the docks and organized some wheels n tyres for it, 15 x 9 -10J rears with 225/50 Kumho V70A, 15 x 8 0J fronts with 205/50 V70A. The car has a adj shocks, 50mm rca's, crazy springs (Drifts very well), Rx7 front calipers, std rear discs, 130rwhp. Goes well.

I was able to get a couple of laps in at QR Sunday arvo to see how it handles etc before this comming weekends Street Sprints in Pitsworth. boy oh boy, does it slide.

I would love some direction on grip setups that people have used that work well, spring rates, ride heights, camber, toe, castor etc...

shift_rook
3rd September 2012, 03:09 PM
If you're looking at setting some serious times and want something that gives you grip i believe the setup i offer is a pretty good bit of kit.

Pending what spring rates and what tyre i would normally say about 2 degrees of camber works well, neutral toe.

Rice86
3rd September 2012, 04:42 PM
i think your after this link here http://www.ae86drivingclub.com.au/forums/showthread.php/2127-Your-Suspension-Setup
with that link you can get a rough idea of what to expect from different setups.

but there is an ideal setup for having more grip *which can get very complicated very fast and i know nothing of*.
unless you are consistently testing your setup and improving in times or getting worse in times, its pretty hard to figure out exactly what works for you and what doesn't, and that can be a fun thing which im finding out myself at the moment.

Sounds like your car has some pretty sweet mods already, i would say use what you already have, try different wheel alignment which is as important as driving skills and do a lot of driving obviously.

dove grey 64
3rd September 2012, 04:59 PM
get some shockworks coilovers, at full soft it has bucket loads of grip, while at the track keep adjusting the shock setting until you find your perfect handling setting.
other converts here with serious track cars will tell you the same thing, mines just a daily/touge car.

Noddy
3rd September 2012, 05:06 PM
Spring rates, sway bar size and ride height are my main point of interest at the moment. Even though a smaller wheel with taller side wall is going to give some better compliance and grip, I would think a spring choice can help regain results in that area. I have a reasonable amount of motosport exp, just not with this platform and am starting from scrach. Ride height and spring rates I figure are the best place to start. Looking at the rear springs, they are cut and overkill fat... these are the first thing I want to change, soften them up, raise it up. I want to raise the front ride height a little too, I think it is just too low.

Thanks for the link, very much what I was looking for, has a lot for drift in there.

When I get it fome tonight I'll take some accurate measurements.

shift_rook
3rd September 2012, 05:30 PM
Leave bar alone unless you really have to, if you're chasing grip. We have found good balance with a 6/4 setup, guess it depends on what dampers you're using though.

Noddy
4th September 2012, 07:50 AM
Springs are 6/7+ish, no wonder the ballance feels sooooo out of wack. Fronts are adjustabe, gas and any ones guess of brand at the moment. Although the rear a set are only a set of oil only TRD greens, at least they are adjustable. I've had them all out on the bench and seem to be in good order. I will have a hunt about for some 4kg rear springs today, any suggestions on ride height Chris?

skizzamods
4th September 2012, 02:07 PM
I guess it will depend where your doing your driving.
I run 5 and 3.5kg springs with my bilsteins, I could go softer again.
Don't really feel the need for swaybars at the moment. This car is for grip on street surfaces.

shift_rook
4th September 2012, 03:04 PM
There's a few factors, the main thing to watch is that your lcas don't go over centre.

AJPS
4th September 2012, 09:09 PM
get softer springs, and a different wheel alignment

perhaps pinion angle adjustment on the rear

pm me if you want quote on springs or set up advice

racsov
8th September 2012, 08:56 PM
let us know when your going to lakeside noddy I wanna come have a look :)

LittleRedSpirit
9th September 2012, 11:03 AM
Leave swaybars stock. Softer springs. Make sure whats there has good bushes and works appropriately. Not too much caster, maybe 3.4 degrees. Also, perhaps about 2.5-3 degrees negative camber, and you will still scrub the outer edge of the tyre if you drive it hard enough. Zero toe if your steering rack is perfect, otherwise if it has some play, toe it in a tiny bit. I find height is critical, as in the right ride height front to rear. It changes the handling a lot. Lower the rear too much and it will create understeer, raise it too much and you can create oversteer issues. Pinion angle can be tuned, and there is a sweet spot for good grip. I find it better for the cars balance to have an equal sized wheel and tyre on a car with as little power as a 4age ae86. It makes it a lot more predictable. With 8/9 combo and appropriate tyres you may find it hard to make the front steer right, it could tend to push the front through corners with more rear grip than front.

shift_rook
9th September 2012, 11:28 AM
Some good advice there indeed. We have done tyre heat testing at Mallala and 2.5 is pretty much perfect, we had a 3-4 degree difference across the whole tyre. As apposed to it previously having 5 degress and having a 20 degree spread.

LittleRedSpirit
9th September 2012, 11:41 AM
Thats awesome, Ive always wanted to buy an IR thermometer gun but havent yet.

Noddy
13th September 2012, 10:30 PM
Thanks for the advice. I have got some softer springs and will be testing at Morgan Park in a couple of weeks. Im getting some help from Bruce McKenzie, twice NZ rally champ. He won both titles in a privately built AE86 beating the TRD NZ team and Possom Bourn too. We are giving the 4A a birthday in the near future too.

The clip below isn't my best lap of the weekend, but it does show how it bounces about with the original setup.

http://youtu.be/20hQ6-8BhGA

AJPS
14th September 2012, 07:16 PM
Some good advice there indeed. We have done tyre heat testing at Mallala and 2.5 is pretty much perfect, we had a 3-4 degree difference across the whole tyre. As apposed to it previously having 5 degress and having a 20 degree spread.

that is a drift car tho?

shift_rook
14th September 2012, 07:17 PM
Was doing laps, not drift :)

Always helps to get balance setup right first with just laps and on limit grip testing before seeing how the car feels to slide.

AJPS
14th September 2012, 07:57 PM
Was doing laps, not drift :)

Always helps to get balance setup right first with just laps and on limit grip testing before seeing how the car feels to slide.

yep for sure

shift_rook
14th September 2012, 08:48 PM
Was good watching davey destroy an older style Lambo round the track. Corolla>Lamborghini

Andy San
14th September 2012, 10:05 PM
Davey's car is far from an ideal circuit setup, have a look at what most of the ipra cars run camber wise, you'll find it's a lot more than 2.5 degrees

shift_rook
14th September 2012, 10:10 PM
You're right, on a stickier tyre you would probably need more, he was just running RE001's

AJPS
17th September 2012, 10:46 PM
Davey's car is far from an ideal circuit setup, have a look at what most of the ipra cars run camber wise, you'll find it's a lot more than 2.5 degrees

mallala doesnt really require awesome suspension tho

heaps of cars running pretty strong times with average shit