jones75254

iTrader: (2)

6-7k launch? yeesh, those R tires must be stickilicious!!

Lasse wankel

Yes they are! But DOT slicks is better!

/Lasse

TeamRX8

iTrader: (25)

I launch at 7+ on my Yoko Advan Neova street tires

cjwaggs

I ran a 14.5(at gateway stl) with street tires, heavy 19" rims, midpipe, rb exhaust, intake and the racing beat race flash... That was launching at 4500-5000 feathering the clutch.. and shifting at like 9700 ish! It was fun once I figured out how not to wheel hop to half track... damn stock suspesion minus tein s-techs.

SlideWayz

I'd like to see what kind of 1/4 numbers someone gets with one of the high-end turbo kits putting 350 HP to the wheels and big 19" slicks + stiffer shocks on the back.

I'll bet it would do mid-12s set up like that.

Otherwise, I just don't see how this car can get into the 12s no matter how much power it has...the suspension just isn't designed to put it down to the pavement.

WoodsOfGreenRx8

and sitting there, starring at a circle for hrs suck!

mac11

iTrader: (1)

Circle?

WoodsOfGreenRx8

Mac, correct.. Thats not a circle.. I was more hinting towards Nascar & such.

mac11

iTrader: (1)

i havent seen anyone on this site say they are a nascar driver

Terrance26

My best time stock was a 15.0. My best time with the greddy kit on was 14.3. That was just the greddy kit at stock boost. It was never tuned it was bolted on the car thats all. But I did also run the car with 20s, without the 20s I would have hit high 13s easy.

YaXMaNGTO

I guess you missed my point. Again.

Even you don't care about 400m times, you should care about the trap speed your modified cars make at the end of the 1/4 mile. It's measurable, and it translates to power under the curve. I trapped 107mph stock, and you know what, a bunch of other stock GTO's do as well. Its just a starting point, and you can measure the value of the mod by how it increases your trap. That's real, and I don't see how you can argue that. A stock RX8 will trap about 94-95mph. Start there and work youre way up.

I couldn't care less about whether you demand these numbers from your aftermarket manufacturers, because I have no stake in the matter. I just simply suggest that more folks should ask for these sorts of stats, or go chase them yourselves. It doesn't matter what you E/T, because that's more about the driver, and how much hurt you want to put your car. Go out to the track and chase trapspeed, not E/T.

That's how most do it... not just the brick driving people.

mac11

iTrader: (1)

I agree completely. And a lot of people around here would do that, only that would quantify it by saying they reached a new peak speed on the long straight at XXX track that they regularly drive at.

However, it seems a large portion of the track drivers here do not go after F/I. A lot of the comments that come from them are along the lines of "50 extra horsepower would be great so the large displacement American cars didn't walk us down the straight, but I am not driving at the full potential of the car as is so I don't need it." most of the people going F/I, as it appears to me, are people that never take the car off the street. Kind of a waste, IMO, but that seems to be the trend. For now at least. I'm sure it will change as warranty periods drop and the car becomes cheaper and more available in the used market.

Rocketman1976

Not to mention the suspension has to be changed a lot to make it run well in a quarter mile and that would change the comfort and perofrmance in highway and track use. Its kind of a fork you hit with this car, you can do some stuff to get the track #'s really good or forget about that and set it up for 1/4 mile.

I am pretty much in the middle and will be looking at an adjustable suspension that maybe I can get good performance in both. Also having a good quarter and taking someone in a LT1 or 4.6 from a 25+mph roll on the street are 2 diff things. Even in bolt on form I hang with 350z's, 2006-07 mustang gts or 96-98 Z28's from a roll. With the setup the car has it just doesnt launch well but once its going and you stay in the high revs it keeps up with cars that are faster in the 1/4. That tells me that when I have FI and am making 330 rwhp 275 lbs tq, I will walk away from these cars on the highway or from 25+mph.

mac11

iTrader: (1)

or say.....on the front + back straights of Road America. If I have enough power to even hang with the LS blocks on those straights it will be lights out when we come to a corner.

Greek Racer 8

^I have your exact setup. Subs and time. I did th same time when my subs were out also. For me it's the high altitude in CO that kills the car. The only way to run better times is to go someplae at low altitude and run it.(minus 1.5-2 sec for every 5200ft of elevation.)

In my opinion, the 8 is an exceptionaly good 1/4 car. Look at it this way, you have a 1.3L engine running high 14s stock (low 16s in my case) that beats any V6 Mustang or Camoro or anything equal to those cars. On the track they'd be killed.
What does a stock evo or sti run? about the same as the 8 at sea level but they have a turbo. Throw a turbo on an 8 and it's a killer on the track and 1/4.

(Finaly for the first time no one has come in yelling that the 8 isn't a good 1/4 car.)

ducksauce

are you worried about detonation? i read in several of these threads that 300rwhp is about all the tiny 1.3 renesis can take. i really want a maz or a protech but like you, i really like the 8 and plan on keeping it for a bit (other option was an infiniti g37 - very nice) so i'm a bit concerned about pushing its limits - so maybe the greddy is the safer option?

mac11

iTrader: (1)

what does racing from a roll (what you bolded) have to do with detonation?
The renesis has proven 330whp on several different kits. Most of those kits are built with room to grown. It's also obvious on those kits that the ignition system gives up the goose at that ~13psi and you blow out the spark after that. With an upgraded ignition system you should be able to toss in a few more PSI before your static compression starts to become the limiting factor. With AI of some form you should be able to make ~400whp easily streetable without porting.

Rocketman1976

The PTP kit was tested in the quarter in the Car and Driver mag review, they only ran 13.5 with real bad wheel hop but it was at 109 mph, so you can figure the possible quarter with that. I would think with no wheel hop you would probably gain around 2 mph. So I would guess a quarter with around 111 mph. which is in the lower 12's.

Greek Racer 8

I'm not so sure that 1/4 speed is related wiht time. I don't remember the actual speeds but last time I was at the track with my brother (about a year ago) he ran a 13.6 with his vette (all motor) at like 98 mph and some other car ran about the same time at 105 mph. Something like that.

heyarnold69

iTrader: (1)

morning 14.9 // afternoon 15.1

launch at 3400

AvatarQAZ

If person A got a good start and person B wheel hops the first 60 feet then yeah, the car that runs slower is going to run a faster time. That does not stop the faster car from runner a faster quarter mile. Trap speed is an indicator of POTENTIAL time. There are a lot of factors to consider (power delivery v. acceleration, shift points, number of shifts, etc) but generally speaking if you trap 105+ you should be in the 12s. That number may vary based on how you come off the line.