First, all you guys with traction problems need to get an adjustable coilover setup.

Then you can get the other stuff.

I have the Zeal V6 and if I ride on a stiffer setting it lights em up pretty easy. So when I set it to the softest setting I have a lot of grip.

I just put on RE050 A's 285's in the rear by Bridgestone and they hook up pretty good.

And the Camber should be adjusted so that you are using your whole tire.

 

The LSD is going to be in, but i know that its not gonna make 1-2nd not loose the rear end, TT cars got alot of low end torque, with a ST i dont think youd have a big traction problem low end, my car will fly sideways if i tap second to hard, i gotta feather it. I wonder if they can detune torque but keep the HP. (im using the HKS fcon vpro). Oh well, on the highway its a beast, whats sucks is that when i finally blow, and build the motor (if i keep the car), then im looking at about 7000.00 to 10,000.00 for more traction problems. I dont know alot about RWD, i know alot about FWD honda's. I remember mustang guys saying they got "gears" in there stang, i assume he changed his gear ratio, can this be done for a Z. If 1-2nd were just longer.

 

Amen! That's one of the first thing's I'm gonna do. Even at the stock height, the camber is terrible for getting the best traction.

 

damn thats a good freakin idea, the camber, its negative real bad stock, with suspension i got, I can look it at and see it. can i put washers in the control arm to make the camber go +? If so im going to autozone and fix this problem

 

BoOsTedz33TT

Are you having these traction problems just launching and doing straight lines or are you talking in mid cornering as in autocross racing?

I do not have much of a problem with loosing traction unless I am in mid turn and trying to WOT it... Basically, if I want to spin I can in 1-5th gears, but I can also control it so this does not happen.

Now even when it does break loose, I have never had my back end spin out on me... Unless I have it WOT around a corner and of course it wants to slide. I have loosened my sway bar in the back and pretty much I can feel when it is about to go and let off the throttle a bit..

I guess I am either pushing my car as hard as you guys or I just am not seeing this problem. I am getting ready to build a new engine and even with another 200 rwhp I am not expecting too much of a problem if I drive it reasonably.

Regards

 

ill be driving straight, lets say i stop, i take off not hard, 1st i can barley get on it, i shift at 4500-5000rpm's or ill go side ways, and this isnt under WOT, second gear i have to feather it to, right when i feel it gets squirrely i shift, i havent redlined 2nd ( i cant ). 3rd i hook up, but after having to shift so early, my RPM's aren't high like they should, so i gotta play catch-up. On the highway if i start off in 3rd at 7.5lbs (with the temp around 80 degrees) forget about, the car is a monster. I guess ill let it sleep till it warms up. Its fun for awhile to get squirrely, but now i wanna be able to run a z06 or 911 turbo from a dig. I dont think its possible with street tires from a dig beating those cars. When i had 336hp i could launch on those cars, never lost that bad, maybe 1.5 car lengths. I got the power now! 426hp and 453 if i want to run 8.5psi, i just cant get it down

 

um.......... don't use washers. order a set of adjustable rear arms to mess with the camber.

 

Joey, get used to chasing cars down. You car is a now high hp and tq. And if you run DR's on the street be prepared to be very scared the first time you take a corner at 90mph +. Get an LSD, an AT pumkin and you'll have better traction. Remember.. this is no Honda. It will chase cars down, but until someone will make some gears, you have to learn to go a little easier in 1st and 2nd and catch up. Don't race a modded eEvo or STi from a stop.

 

it sucks that even with this much power, we're not able to beat lightly modded evo's from a dig.

 

im learning the art of chase, you must have it mastered driving your 600hp beast, I was wondering if i was alone in this. I guess not. I swear i dont know how you can keep that thing on the road. Someone will make gears for our cars one of these days, i just hope i still have it

 

BoOsTed:

I understand what you are saying and to be honest have had similar experiences... I do not drive my car to aggressively on the street. But have been known to race a few muscle cars... I agree I tend to do catch up... Trying to keep the tires solid on the street can be challenging, but in the end I have only lost to Lightening’s, Ferrari’s and the like. In the long run I always chase them down....

Keeping the tires stuck to the ground on a street application is very difficult.

ON the other hand on the 1/4 that is all a matter of tire choice and throttle skill

good luck man,
Brent

 

the trick is shifting weight to the rear tires. unfortuneatley, the Z's suspension is to solid, or to high of a spring rate to do it effectively. the main part of this is to get the front end lifting. softer front spring rates will help alot with it. i saw the earlier post about ladder bars for leaf spring set ups, well they are for coil over set-ups also. all they do is act like a leverage to lift the front end of the car and eliminate spring wrap on leaf spring cars. these can be tuned by having different front and rear mounting heights as to their effect on the chassis. the vettes use a four link style rear and softer springs to get the weight transfer. the four links act just like a ladder bar but there is only an imaginary point of intersection, and not the full length of the ladder bars. four links are the drag racers dream, and chevy figured out how to make that style work for straight line traction and cornering too. i'm suspecting nissan designed this car to be a delight to spin through the twisties and didn't give much concern to hard take-offs, and definately not trying to hook up 600rwhp!! that imaginary lifting point is going to be in any car, my guess is that it is just not as far ahead in the chassis as it needs to be in the Z. i am hoping to get a good look at the rear suspension soon and seeing if there is a way to make it adjustable in any way or is possible to do a 4 link style location for the rear. until then, seems some adjustable shocks is the easiest way to go, and also unhook the front stabilizer bar so the front can lift off of each tire independantly when you hit the strip, then some dr's or steamrollers in the back.

 

what will Drag radials do to the Z in a 90 corner?????? Im planning on making these my every day tires..

 

will be a little squishy. not good in the rain. my friend found this out on dr's hitting a turn in the rain, rolled his new modded cobra 3 times!! car died, he was fine.

 

exactly, there's just so much going against the Z for sheer drag racing unless you practically reengineer the car. It's at it's best dealing with some turns and straights and staying in motion. One of the Z engineers was talking about how they tried to get the Z chasis to not roll so hard so that it would be more stable in turns, thus hurting it's ability to launch. People want to make it a drag race god anyway though and blame bad times on their skill when really it's the lack of traction and/or poor weight transfer to the rear at launch

 

I HAVE FOUND THE SOLUTION TO ALL OUR TRACTION PROBLEMS.......

Behold..... Link

I have been looking for this solution for months and was about to sell my wheels and go with 18's. Well...... NO MORE.

Respect
JET

 

That's going to be my next set....Can't wait !!!

Please let us know how they perform.

 

i did find a set of 335/20's that i'm thinking of widening my wheels to fit. then do what ever it takes to fit them in the wheel well. would look pretty nasty from the back of the car.unfortuneately i have lowered my car so much that no manufactured camber arms can give me enough length to stand the rear tires up straight.
when it comes time i have a feeling i will be building quite a few new suspension parts for my car, with lots of heim joints and adjustability.

 

Whoa, do you mean 20" tires or 335/20/19s? What brand?

 

What is the widest tire that can fit on a 9.5 inch wide rim?