Hi guys,

Current handling setup:

whiteline roll centre kit
perrin offset caster bushes
tein lowering springs
stock arb's
stock billie struts

Now I have a problem when i am at autox with the car... I seem to get loads of understeer at low speed chicanes, also I tend to be getting alot of weight shift when entering turns and sometimes front wheel and rear wheel loose alot of contact with the tarmac as the car leans over. I am confident the cars geometry is spot on but I need to loo at some other things.

Any suggestions on what I can do to improve handling without changing arb's???

Would installing stout mounts to stock arb and adjustable rear end links help at all??? just want the best setup for stock shocks, arb's with lowering springs.

Thanks,
BRONCO

 

.......

 

I'm not sure if it is you entire problem, but those Tien springs arn't helping anything. Tiens are notorious for being way too soft for an evo, hence the massive body roll you are getting in the pictures..

 

^ I agree, I would change the springs first.

tein's are known to be so soft that they blow stock struts....I'm surprised yours aren't blown

 

If you want to handle well on regular lowering springs and have grippy tires (I'll define that as <200 tread wear) then you pretty much need Sway bars to reduce roll. Even my car with gtworx springs, whiteline front and hotchkiss rear bar still has too much roll when on the dot slicks that I can see noticably more wear on the outer edge of the front tires. I also have -2.5* front camber.

It still handles amazing, feels beautifully balanced, and puts down impressive lap times but this is just a stepping stone and a winter set up for me.

As far as your springs go, they are garbage if handling is your goal. Sure, the slam the car a bunch but that is rarely conducive to fast lap times. Swap out to a good spring (the swifts give you decent amount of lowering, but are still pretty lower for stock geometry and shock length), and get a front sway bar. Front grip will increase dramatically.

 

Hello again,

Thanks for the replies thus far it is all much appreciated. I have no knocks or adverse affects having had the tein springs installed. I have also used them on various other evo's without problem.... Bump stops were trimmed as required and I am very happy with them to be very honest. My lap times were consistant since the upgrades and was constantly hooking up laps and getting progressively better and never went off the pace.

In an ideal world I would fit a rear sway bar however rules in our autox class state no use of aftermarket swaybars hence why I am thinking of other modifications that could help perfect the handling and compliment my current mods.

Bronco

 

The Tein S-techs are a big reason for your understeer. Your geometry is not good, even with the WL roll center kit. You are riding the bumpstops in corners, even after you trimmed them. Too low + too soft = bottomed out outside corner with spring rate spiking to infinity overloading that tire = understeer.

The pictures you posted of your car actually illustrate this perfectly.

- Andrew

 

lol way to not take advice...sounds like your set on what you want to do ..why post?

 

What springs do you reccommend and do you know the spring rates at the rear for the Teins... I am glad you jumped on this thread

 

Just stay off the thread mate... not got time for people like you. I really wanted advice on how to improve my setup further without changing what I have already upgraded. If there is no other way I will change springs but I am trying to work with what I have got. I never fitted the springs for looks... I just had them and am working on a tight budget.

 

^ well it seems like your trying to listen now, with everyone telling you the same thing...springs


Andrew is the man though...he will help you out.

 

I have ordered the rear whiteline bump steer kit and cusco sway bar adjuster bracket. I was using Michelin Pilot sport ps2's and they were really bad so didnt help at all. Will be changing to a stickier track compound for next event in 4weeks.

I also was using H&R front camber bolts and my geo settings were proffesionally setup using the string method by a motorsport company. 2.4 neg front and 1.9 neg rear I believe.

I did take 2nd place in my class and was most consistant out of all drivers. Was beaten by 4tenths in the end but that drivers laps were 1.5-2 seconds off the pace then he got one lucky lap.

 

o.k mate cheers...

 

I am biased, but we like our GTWORX tarmac springs the best. Swift Sport and Spec R's are very good as well though.

S-techs are: 212lbs(3.8k)... 291lbs(5.1k)....2.0 inch f / 0.9 inch r

All of the springs I mentioned are firmer and have less of a drop. Ours are between Swift Sport and Swift Spec R in stiffness but have the least drop (20mm front 15mm rear with 290 lbs/in front and 330 lbs/in rear which off the top of my head is around 5.4 kg/mm front and 6.1 rear).

Bumpsteer kit is a nice piece that keeps the car stable under braking and helps the feel of the rear end quite a bit. I personally like a nice, firm, resonsive.....feel from a rear end. cough. I have not used the cusco adjuster bracket but since you are not allowed to change swaybars I think that would be a great piece to add.

Try running a little less rear camber too. By geometry i meant roll center height in my first post.

- Andrew

 

Can you quote me happy on some of your springs please as your website link does not work... good advice and lookforward to seeing how much of a difference it all makes.

Are there any other bushes that are worth doing without just wasting money?

BRONCO