View Full Version : Can't break into the 6s!!!!


Lschiavo
09-20-2004, 01:46 AM
Hey guys, I have been trying to do 6s with the Gtech pro from 0-60 MPH and the best I can get is a 7.2..... 60' in 2.3 then 330' in 6.5 and finally 0-60 mph in 7.2s ... Any of you doing better?? I am dropping the clutch at 4,500 - 5K and just me in the car.

ayap888
09-20-2004, 01:54 AM
7.2 sec for a manual tranny ??? Maybe because you have a full body kit???? ... that adds weight. 7.3 is the rating for the RX8 automatic based on a techie on this forum. So, the RX8 automatic can do head to head with a manual based on this new data. :) o ohh ...

Lschiavo
09-20-2004, 01:58 AM
Yes i do have the full body kit... However i have the lightened flywheel! SHouldn't that help make it faster???? Can't get a 6!

IZoomZoomI
09-20-2004, 02:00 AM
trying dropping the clutch at 7 grand, you really have smash it to get it under 6

sjt
09-20-2004, 02:05 AM
For some strange reason, I thought this thread was in reference to trying to STEAL Mazda 6's....

Lschiavo
09-20-2004, 02:06 AM
I have tried to do it at 6K but i get a lot of wheelspin and 60' times are like 4tenths slower, does not improve 0-60 since i burn a lot of time spinning the wheels! :confused:
trying dropping the clutch at 7 grand, you really have smash it to get it under 6

IZoomZoomI
09-20-2004, 02:19 AM
Try featherin the clutch out there would be less wheel spin. You'll know when you get a perfect launch the car just propels.

Pardon my ignorance (no intentions of offending you either) are you not a race car driver? :confused: We should be asking you how to drive this car! :D

Lschiavo
09-20-2004, 02:49 AM
Yes i am dude, but i am not drag racer. We dont even have launch starts, instead wee have rolling starts. Once we get out of the pit to go for the warm up lap, we are out of the clutch until the race ends. That is why I am not very good at launchs.
:cool:

Try featherin the clutch out there would be less wheel spin. You'll know when you get a perfect launch the car just propels.

Pardon my ignorance (no intentions of offending you either) are you not a race car driver? :confused: We should be asking you how to drive this car! :D

Speed Racer
09-20-2004, 08:55 AM
My best 0-60 time that I have recorded was 6.02 seconds and that was when the car was completely stock. The only way that you are going to get the car into the 6s is to dump the clutch above 7k RPMs. You end up with a ton of wheel spin but when it finally hooks up the engine is much closer to its sweet spot.

I only did this to verify the times published in the magazines and don't plan on doing it again. It is just too rough on the car and you are bound to break something.

DarkM
09-20-2004, 09:05 AM
In the U.K. most technical articles quote the high power 6 speed as having a 0-60 of 7.2 and the low power 5 speed as having a 0-60 of 8. We do not have the automatic low power so I don't know about that.
It is generally accepted that the high power is capable of 6.5 by reving to 7K and feathering out the clutch in secomd gear until the tyres bite and then flooring it to the red line (No gear change required). You must also have the DSC fully switched off and the engine at the correct temperature. Too cool or too hot and the ecu will reduce the power. You may also need the car moving to get the required amount of air into the intake.
The accelleration times for 30 to 60 in second gear and 50 to 80 in third gear are the impressive figures and show that in the real world very few cars can keep up. This is due to other cars shorter power bands, lower rev limits and less linear torque curves.While other cars need to change gear we are still accellerating. You will not get the short sharp shove in the back when accellerating in this car instead we get the gentler shove which lasts longer, making the car deceptively fast.
Finally a reminder that dropping the clutch at 7k will at the very least wear out the clutch very quickly.

Gord96BRG
09-20-2004, 11:53 AM
Yes i do have the full body kit... However i have the lightened flywheel! SHouldn't that help make it faster???? Can't get a 6!

The flywheel will make a slight difference, not much. BUT - you're at 3500' elevation above sea level. Just from that alone, your engine is making 10% less power than your car would make at sea level (applies to any normally aspirated engine). It's a given - cars are slower up here than they are at sea level.

Also - where are you running that you get wheelspin at 5K rpm? It sounds like the road surface is not very grippy - most places I'd just bog if I tried a launch at 5K. I ran with the Miata club at Race City in August (south course), and even though the track isn't very grippy, I still needed over 6K to get any wheelspin. A grippier surface would be required to get a better launch. From the drag racing threads, it seems that a good 60' time is under 2 seconds. (disclaimer - I'm no drag racer, have never run at a strip)

Regards,
Gordon

JeRKy 8 Owner
09-20-2004, 03:41 PM
7.3 is the rating for the RX8 automatic based on a techie on this forum. So, the RX8 automatic can do head to head with a manual based on this new data. :) o ohh ...


Actually theautomatic is more like 8.3 seconds. I dont knowwhere everyone is gettingthese ideas that the automatic does 60 in 7.3 - 7.6 seconds.

Astor
09-20-2004, 04:19 PM
In the U.K. most technical articles quote the high power 6 speed as having a 0-60 of 7.2 and the low power 5 speed as having a 0-60 of 8.

I thought the UK used 100kph instead of 60 mph, which are close but the UK is on the metric system, and the auto is a 4 speed not five.
-just to clarify

Gord96BRG
09-20-2004, 04:36 PM
I thought the UK used 100kph instead of 60 mph, which are close but the UK is on the metric system, and the auto is a 4 speed not five.
-just to clarify

The UK is not 100% metric - road distances and car speedometers and odometers are still in miles. Continental Europe uses km, km/h, and 100 km/h for acceleration comparisons. Ireland is weird - they use speeds in mph, but newer distance signs are in km!

He wasn't referring to the auto - in Europe, Japan, and elsewhere outside North America, Mazda offers the low-power Renesis with either a 4 speed auto or a 5 speed manual.

Regards,
Gordon

RotorManiac
09-20-2004, 07:31 PM
Speed Racer: you did 1/4 mile in 14.037secs:eek:? And 0-60 in 6.02 is unbelievable! Can you tell us all the secrets please?

I tried myself to see what I could do, but I used a stopwatch:rolleyes: go on... flame me, I know it's the worst way to do this, I was shifting and pressing the buttons on the stopwatch at the same time:D I wasn't abusing the tranny and the car, since it was very new, only 3k miles...

I tried 0-100kph and I was constantly getting 7.7secs. I once tried 0-96kph(0-60mph) and got 6.7secs. That time it felt much better, so I realized I could do lower times or... break something!

End of story: with proper equipment, more determined effort (feathering the clutch and harder shifting to 2nd) you CAN do 0-60 in low 6's :)

JeRKy 8 Owner
09-20-2004, 08:16 PM
So Im just curious here guys, if you do a normal smooth launch w/a 6spd manual Rx8 -- what do your 1/4 mile and 0-60 times end up coming out to? In other words no dropping the clutch at 7000 or 8000 RPM off the line, just a smooth shift. What types of 0-60 times do you assume you guys would normally achieve?

Speed Racer
09-20-2004, 08:18 PM
Speed Racer: you did 1/4 mile in 14.037secs:eek:? And 0-60 in 6.02 is unbelievable! Can you tell us all the secrets please?
No secrets, just very aggressive driving. That run was done with an 8k RPM launch and when I shifted I only lightly lifted off the throttle. I was only off wide open throttle for a couple tenths of a second before I put the power back down.

I honestly do not recommend doing this. Do it a few too many times and you will be looking at replacing any or all of the following: clutch, transmission, drive shaft, and differential.

RotorManiac
09-21-2004, 08:58 AM
No secrets, just very aggressive driving. That run was done with an 8k RPM launch and when I shifted I only lightly lifted off the throttle. I was only off wide open throttle for a couple tenths of a second before I put the power back down.

I honestly do not recommend doing this. Do it a few too many times and you will be looking at replacing any or all of the following: clutch, transmission, drive shaft, and differential.

Hmm... that explains everything. Not lifting the right foot does the job but rapes pretty much everything:( So people are just trying to flame the 8, claiming it can't do better than 15. It can do very low 14's for quarter mile.

Thanks for the info, seriously! Its nice knowing that our car can do those times! I'll keep that image you posted earlier as a proof to anyone that does not believe in the power of the rotaty:)

Ike
09-24-2004, 01:29 AM
I think there are more g-tech threads in competition racing than there are threads about the strip. So sad...



For those of you putting weight in this nonsense (looks at Rotormaniac), g-tach times are useless crap unless you just want to compare one time to the next on the exact same strip of road. The times themselves are NOT accurate.

RotorManiac
09-24-2004, 12:58 PM
Ike do us all a favor and go drink some wine and drive your supercar...
Since our 8 is so slow, why do you bother? Why keep posting here anyway??
.
.
.
...maybe you got smoked once and still don't want to admit it? Maybe you got embarrased somehow, I dunno...
oh crap, I'm wasting my time...

PoLaK
09-24-2004, 01:14 PM
Ike do us all a favor and go drink some wine and drive your supercar...
Since our 8 is so slow, why do you bother? Why keep posting here anyway??
.
.
.
...maybe you got smoked once and still don't want to admit it? Maybe you got embarrased somehow, I dunno...
oh crap, I'm wasting my time... I'm not defending IKE and he could phrase some of the things he says in a manner more becoming of his age, but he is right.

Gtech are not accurate, in that their not going to get you times matching magazine 0-60's or Quatermile times, not every time at least. No matter how accurate it is its still just a 300 dollar piece of hardware mounted on you windshield, you can't compare it to the several thousand system used at drag strips or the sensor that R&T and C&D use mounted to the wheel wells.

I'm not bashing on GTECH because i want one myself reason being as a comparative tuning tool it’s a great piece. For instance if i can do a stock run on the highway 2 miles from my house get a base Horsepower run then install a lightened flywheel in the comfort of my garage during the next 4 hours and then take the car out again and see how much more HP i gain. The HP numbers it gives me may not be totally right, but at least i know how much HP the flywheel made.

Ophitoxaemia
09-24-2004, 01:22 PM
if you want good g-tech times, find a section of road that goes downhill. your car will magically become lots faster.

but as a comparison device like polak says, it can do that.

james

Ike
09-25-2004, 03:30 AM
[QUOTE=PoLaK]I'm not defending IKE and he could phrase some of the things he says in a manner more becoming of his age, but he is right. [QUOTE]

Sorry, I'll candycoat things from now rather than being blunt and honest :rolleyes:

Don't like the way I say things, fine... But implying that I'm immature in my posting is baseless and uncalled for. You should learn to show some respect to your elders young man. :p

So, when's the next g-tech competition?

PoLaK
09-25-2004, 09:54 AM
[QUOTE=PoLaK]I'm not defending IKE and he could phrase some of the things he says in a manner more becoming of his age, but he is right. [QUOTE]

Sorry, I'll candycoat things from now rather than being blunt and honest :rolleyes:

Don't like the way I say things, fine... But implying that I'm immature in my posting is baseless and uncalled for. You should learn to show some respect to your elders young man. :p

So, when's the next g-tech competition? baseless, no, uncalled for, maybe. Either way i said you were right you should be grining ear to ear.

Genom
09-25-2004, 12:54 PM
And I disagree. A properly setup G-tech (admitedly, not that frequently found) will be VERY accurate. IF setup properly. I know that I have compared it's results to a real 1/4 track equipment and it was .1 to .3 off. Now, if you consider .1 second difference to make it useless garbage, I think your standards are a bit unrealistic.

Just because you or people you know cant be bothered to set it up properly, or work within it's requirements, doesnt mean nobody does.

RotorManiac
09-25-2004, 02:09 PM
maybe speed racer can tell us his opinion then about those g-techs...

the ones I've seen mags using here are racelogic's Vbox II and III. they say they are very good. so counting 0-100kph in 6.4 means its a 0-60 time in 6.2-6.1secs

PoLaK
09-25-2004, 06:44 PM
And I disagree. A properly setup G-tech (admitedly, not that frequently found) will be VERY accurate. IF setup properly. I know that I have compared it's results to a real 1/4 track equipment and it was .1 to .3 off. Now, if you consider .1 second difference to make it useless garbage, I think your standards are a bit unrealistic.

Just because you or people you know cant be bothered to set it up properly, or work within it's requirements, doesnt mean nobody does. Each to his own but just a couple hours ago i was fiddleing with a Gtech, and it was set up properly but i had to do 6runs before i got results that were similar to eachother.

Using my 14.58@94.55 timeslip and some simple calculus i can figure out that I ran a 5.97 0-60 on that run.

Speed Racer
09-26-2004, 12:04 AM
Even though I have gotten a fast time with my Gtech in a way I agree with Ike. There are so many variables (setup, launch technique, firmness of suspension, smoothness of road, inclination of road, etc...) that can effect the results that it makes it very difficult to compare to magazines, drag strips...

On the flip side it can be a good comparative tool when only one variable changes at a time (i.e CZ settings, exhaust, intake, etc...). You probably won't get numbers that exactly match a dyno or time slip but the difference between runs are real. Especially if you do multiple runs and average the results.

irish8
09-26-2004, 01:18 AM
Ireland is weird - they use speeds in mph, but newer distance signs are in km!


Hey!! :D

Ike
09-27-2004, 12:35 AM
baseless, no, uncalled for, maybe. Either way i said you were right you should be grining ear to ear.

Don't flatter yourself, I could care less if you think I'm right or not.

PoLaK
09-27-2004, 01:25 AM
Don't flatter yourself, I could care less if you think I'm right or not. Comon now you know I've got a soft spot for yah ;) don't try to make me feel like that with your superficial apathy, go have some "Happy Alcohol" (wine) :)

It is not wine that makes us happy, it is alcohol that makes us happy for no reason. Wine is what gives us a reason to let alcohol make us happy without one. Without wine lore, and wine tasting, and wine talk, and wine labels, and, yes, wine writing and rating—the whole elaborate idea of wine—we would still get drunk, but we would be merely drunk. Sounds like you should be more chipper then a chipmunk.

Ike
09-27-2004, 01:46 AM
Comon now you know I've got a soft spot for yah ;) don't try to make me feel like that with your superficial apathy, go have some "Happy Alcohol" (wine) :)



Oi... no alchohol for me tonight, just got back from a wedding in Indy and drank more Vodka than any human should be able to. Did some really bizzare thing that keep coming to me as the day goes on, what scares me even more is the stuff that I don't remember doing :p At least the girl I woke up next to was as pretty as I thought she was in my drunken stupper. :D

nosubstitutec4s
09-27-2004, 08:21 AM
My best 0-60 time that I have recorded was 6.02 seconds and that was when the car was completely stock. The only way that you are going to get the car into the 6s is to dump the clutch above 7k RPMs. You end up with a ton of wheel spin but when it finally hooks up the engine is much closer to its sweet spot.

I only did this to verify the times published in the magazines and don't plan on doing it again. It is just too rough on the car and you are bound to break something.


WOAH there. you got a 14.0 sec 1/4 mile at 101 mph? can i have your car? that is a fucking awesome time.

JeupRX-8
10-04-2004, 10:45 PM
Damn am I glad I don't have this car anymore! After seeing you guys complain about not getting under 7 seconds, I can't believe that. I thought it was for sure a 6.5 second car, but what do ya do? I bet my M3 could pull a 6.5 second 0-60 with just going to 5k rpm durning my break-in period.
Seriously though, you guys have to quit looking at the 0-60 and 1/4 mile times! Take the beast out to the track like I did and whomp on some 350z's and G35's. You will forever love your car knowing that the 9,000 rpm is king on the track compaired to the 350z or G35.

Troy J.

Ike
10-04-2004, 11:48 PM
WOAH there. you got a 14.0 sec 1/4 mile at 101 mph? can i have your car? that is a fucking awesome time.

Maybe you should just buy his gtech, then you to can have a 14 flat RX-8 that traps 101mph...

PoLaK
10-05-2004, 03:37 PM
Damn am I glad I don't have this car anymore! After seeing you guys complain about not getting under 7 seconds, I can't believe that. I thought it was for sure a 6.5 second car, but what do ya do? I bet my M3 could pull a 6.5 second 0-60 with just going to 5k rpm durning my break-in period.
Seriously though, you guys have to quit looking at the 0-60 and 1/4 mile times! Take the beast out to the track like I did and whomp on some 350z's and G35's. You will forever love your car knowing that the 9,000 rpm is king on the track compaired to the 350z or G35.

Troy J.
Can you dad "loan" me the money to buy one? :rolleyes: