Drag Racing last night
08-30-2008, 09:38 PM
#16
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One of the guys at the track was telling me to launch it at 3K, but I was going off of what some other guys on this forum were saying. Like they said that the test driven G's got better times from not reving it up at all, and also some guys were saying that if you rev up you are only building up heat in the tranny and will cause lower times. I would rev it up to 3K but the only thing I am worried about is the tranny and if it can handle it. Is this bad for the tranny or is it ok to do just not under everyday driving?
Thanks again guys for all the info!
Thanks again guys for all the info!
. But i got better times doing it that way, i find it shortens the lag that the car has in the begining. From stand still i find the car to be lagy on first gear up until 4k.
Last edited by T-rek2; 08-30-2008 at 09:41 PM.
08-30-2008, 11:49 PM
#18
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Look how i see it is going to the drag strip is bad for the car i do it very little, each time you go your hurting the car somewhat.I know for manual it is bad for sure, but auto maybe it is bad for the tranny not sure to be honest. I have done the rev to 3k many times and nothing hapenned and if something does i'll put it under warranty lol . But i got better times doing it that way, i find it shortens the lag that the car has in the begining. From stand still i find the car to be lagy on first gear up until 4k.
. But i got better times doing it that way, i find it shortens the lag that the car has in the begining. From stand still i find the car to be lagy on first gear up until 4k.I did, but I will even more next time!
08-31-2008, 01:55 AM
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Not positive on the exact number but on the attached pic from Maps.com. We were at the northern tip of Guam and if I am reading it right, we were at around 10000 feet. Would that make a difference? Not sure of the exact humidity but it was really hot with no wind if that helps. I was actually posting good times compared to some other close to stock cars. My friend has a bone stock 07 WRX and he was putting down 14.7s and some mustang was running 16-17 secs. Most of the cars that were not in the competition were posting in the 15s. I was told by someone at the track, that because of the conditions on Guam you are suppose to take off almost a full sec of your time. Not sure if that is true or not either.
08-31-2008, 07:58 AM
#21
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Yea bro we did hopefully your not working next time.
Check post #8. I just got it from maps.com I probably just read the map wrong. I'm not from here bro so I just went off of that, sorry i am am not a demographic genius.
Check post #8. I just got it from maps.com I probably just read the map wrong. I'm not from here bro so I just went off of that, sorry i am am not a demographic genius.
09-03-2008, 12:00 PM
#22
Save the heat humidity and altitude and you would likely be around 13.8 or 13.9
The biggest issue with brake torquing is heat build up. In the winter time you may get a way with it a little more. But when it's already extremely hot out- just slam the pedal and go or don't power brake for more than 2 or 3 seconds.
The biggest issue with brake torquing is heat build up. In the winter time you may get a way with it a little more. But when it's already extremely hot out- just slam the pedal and go or don't power brake for more than 2 or 3 seconds.
that cant be right
09-04-2008, 05:11 AM
#27
The northern tip of Guam is no higher than 1000ft on the map you attached.
Glad you're having fun.
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Glad you're having fun.
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09-04-2008, 12:50 PM
#28
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Shifting at 7k will always result on a worse time. It's all about the average HP throughout the gear you are in... not just shifting at peak power.
Shifting at peak power means you will be at a disadvantage when you get into the next gear.
I've done more than 60 passes at the drag strip. And I can vouch that shifting at redline will yield better times than short shifting. My peak power is at 6300. And my redline is 7100. But the power drop from 6300 to 7100 is only 9 HP. The trade off by shifting at peak power will result on a much lower HP at the next gear than shifting at redline.
.
Last edited by skaterbasist; 09-04-2008 at 12:53 PM.
09-04-2008, 01:47 PM
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The worst thing you can do is short shift on a car with a very linear powerband.
Shifting at 7k will always result on a worse time. It's all about the average HP throughout the gear you are in... not just shifting at peak power.
Shifting at peak power means you will be at a disadvantage when you get into the next gear.
I've done more than 60 passes at the drag strip. And I can vouch that shifting at redline will yield better times than short shifting. My peak power is at 6300. And my redline is 7100. But the power drop from 6300 to 7100 is only 9 HP. The trade off by shifting at peak power will result on a much lower HP at the next gear than shifting at redline.
.
Shifting at 7k will always result on a worse time. It's all about the average HP throughout the gear you are in... not just shifting at peak power.
Shifting at peak power means you will be at a disadvantage when you get into the next gear.
I've done more than 60 passes at the drag strip. And I can vouch that shifting at redline will yield better times than short shifting. My peak power is at 6300. And my redline is 7100. But the power drop from 6300 to 7100 is only 9 HP. The trade off by shifting at peak power will result on a much lower HP at the next gear than shifting at redline.
.
Agreed. The engine is still making power beyond the peak. When you shift early, you drop the revs in the next gear putting you below the "sweet spot" in the powerband.
09-04-2008, 02:17 PM
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The worst thing you can do is short shift on a car with a very linear powerband.
Shifting at 7k will always result on a worse time. It's all about the average HP throughout the gear you are in... not just shifting at peak power.
Shifting at peak power means you will be at a disadvantage when you get into the next gear.
I've done more than 60 passes at the drag strip. And I can vouch that shifting at redline will yield better times than short shifting. My peak power is at 6300. And my redline is 7100. But the power drop from 6300 to 7100 is only 9 HP. The trade off by shifting at peak power will result on a much lower HP at the next gear than shifting at redline.
.
Shifting at 7k will always result on a worse time. It's all about the average HP throughout the gear you are in... not just shifting at peak power.
Shifting at peak power means you will be at a disadvantage when you get into the next gear.
I've done more than 60 passes at the drag strip. And I can vouch that shifting at redline will yield better times than short shifting. My peak power is at 6300. And my redline is 7100. But the power drop from 6300 to 7100 is only 9 HP. The trade off by shifting at peak power will result on a much lower HP at the next gear than shifting at redline.
.