i was wondering what you meant, sorry. yeah bro, it was actually matt, ZUL8R. he was on the stock potenzas his last outting and had a couple good launches...


pm me and i will try to make it for sure

 

ahhh, you z guys are getting the hang of launching at osw . I knew it would happen sooner or later

 

i have no problem with OSW except...


they need to have a course for people who are new and explain Dont Drive Through The Water With Your Street Tires!!


if someone does it, we should be able to go up to their car and grab there head and bash it BAM!! right into the steering wheel.

i launch well there and always have unless some idiot in his 88 4 door accord drags a bucket full of water to the line...

 

That may be, but I've seen UTEC tuned TN ST dynos with power building past 6k rpms. My power peaks and begins to taper at roughly 5700 rpms, which seems a bit early to me. I discussed it with MIA in the past, and he told me that timing was conservative on the top end for safety reasons. I really have no reason to doubt him.

The car makes good power, which I'm totally happy with, but I still think I could pull a good amount more out of it with stage 1.5 and a good tune. However, at this point I'm debating whether its even worth my time vs going directly with stage 2...

Pardon my newbishness, but what exactly do you mean by "yanking my fronts"?

And about the ET Streets - yeah, I would like to get some of them, but I'm not sure where I can find some 15" wheels that will fit over my brembo rears (for cheap). My car isn't an all out drag car, and I figured I could use the ET radials on the streets as well when I feel like laying the smack down.

 

yanking the fronts is when you see cars actually yank the front tires off the ground. if he is doing this with some et streets then thats incredible!!!

 

Ahh, makes sense.

But really, how much better are the ET Streets than the ET Street Radials?

 

There is no 15" wheel that clears the Brembo's. I run discontinued Weld wheels 16" that barely clear the Brembo's...

 

There are a few 16" slicks and cheater slicks (ET Street and similar tires) out there but they are only in a few select sizes. Hoosier has a 26x 9.50-16 cheater, a 28x10-16 slick. MT has a few, 10.5 and 11.5" widths in 26, 27, and 28" diameter ET Streets for 16" wheels, M&H has a 26x11.5 and 28x12.5 (I really liked my M&H slicks that I had back a couple years ago), etc. I don't imagine you'd want a 27 or 28" tire at your power level, unless you have something very specific you want to do with your gearing, like avoid shifting into 5th or something.

 

well. on a 26 inch slick, alberto and i are both having to shift into fifth right before the line. i just bought some new 28 inch slicks that i will be trying out really soon. on a 26 inch slick with 15 psi, 4th gear goes exactly 115.8 mph. i will soon know how much i picked up from the 28. if this doesnt work i am going to order 3.9 fd and just be deep into fifth ....

 

with all those things making ur gears longer, dont u mean deep into 4th. taller tires and a taller gear would help avoid having to shift into 5th!

 

i think i am selling my et streets. they are a soft sidewall tire unlike the radials, so they will wrinkle and hook a little better. here is a pic of them, they are about 27" tall actually when mounted on an 8" wide wheel, which actually might help you if you mph a little more.

 

yeah i am saying that if the taller tire doesnt work like i want it to, then i am going to go another route and get the 3.9 FD and be deep into fifth.


i just got 28 inch slicks which should keep me in 4th through the traps. but going with a taller tire might slow down the car the rest of the way and/or hurt my 60 ft time. i will find out though soon...

 

How much mph would we get out of a 27" slick Jeremy? Do you know how to calculate that? I think with a 27" slick and 7200rpm rev limiter it will be more than enough for 117-118mph in 4th

 

Max speed in 4th gear with different tire sizes and rev limiters

 

Thanks a lot man. It seems a little off from actual-or our tachs are off. I cross the line at almost 7000rpm's (on the tach) going 114-115mph with a 26" slick. Id love to be able to do 126mph at 7200rpm's (26") in 4th but that seems WAY high to go in 4th according to the speeds Ive seen at almost 7000rpm. According to that I should have more than enough mph in 4th on my 26" slick and 7300rpm limmiter to finish the 1/4 mile in but its not happening.

 

Couple things can account for that. Tachs are almost always off by a little bit, sometimes more than a little bit - my tach in one of my cars shows that my stock rev limiter is at 6800. I put that car on a dyno or plug in an OBD2 reader and it's dead on at 6600rpm, even though my tach is reading 6800. Also when you cross the line and your trap speed on your slip says 115mph, you are going a few mph faster than 115mph. 115mph is the average of your speed over the last 60 feet of the 1/4 mile, you're probably going more like 118 (that's just a guesstimate, it could be calculated if you know the exact RPM you cross the finish line at). These numbers are dead on given the gearing, tire circumferance, and rpm, assuming I had the correct numbers in there for 350Z gearing.

 

Man is fontana opening up??!?!?!?!? ill be there if thats the case get some numbers out of mine

 

that is theoritically, now i know i hit my rev limiter on one of my runs and never shifted and trapped 115.8. the reason for the difference is the weight of the car on the rims actually makes the diameter a bit smaller. 26 inch slicks are 25.9 inches tall, now i am 100% sure that my car trapped 116 pegging the rev limiter in 4th at 7200. i figure with the 28 inch slicks i should be able to get 8-9 more mph outta fourth gear

i figure that with the weight of the car it lowers the diameter about two inches total. thats about the numbers that fit into the the charts.

and yes alberto 27 inch slicks will give you enough for 4-5 more mph, but then in a few months you will be wanting more and buy new tires again. i will get a few runs on these and let you know what i think. i have to wait about a month to go cause i have sooooo much other stuff going on with my car that i cant afford to break anything

 

i didnt think that 1" was really that much of an increase, but good stuff. so then i would think you should be all set with just 28" tires audible, and not have to do the FD swap.

 

thanks i will find out soon. man my new rims, i lost 39 pounds of unsprung weight, by far my best mod so far.... i love it!!!