Lschiavo

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

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

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

trying dropping the clutch at 7 grand, you really have smash it to get it under 6

sjt

For some strange reason, I thought this thread was in reference to trying to STEAL Mazda 6's....

Lschiavo

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!

IZoomZoomI

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? We should be asking you how to drive this car! :D

Lschiavo

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.

Speed Racer

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

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

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

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

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

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

Speed Racer: you did 1/4 mile in 14.037secs? 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 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

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

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

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

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

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

iTrader: (1)

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

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

[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

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

iTrader: (1)

[QUOTE=IkeWRX][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. baseless, no, uncalled for, maybe. Either way i said you were right you should be grining ear to ear.

Genom

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.