1/4 mile times with slip
- Thread starter MS3077
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FMOS Racing
Member
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- 2008 MS3, plus a pickup and a beater car
Thank you! I was pretty surprised. I honestly expected to see 13.30s@103 - thought the MPH would fall off a bit since a better launch means you "shorten the track" or take away time from being able to accelerate.
The tires were some seriously worn out BFG DRs, 255/60-16, mounted on 2nd Gen Probe GT wheels. A friend of mine ran them for a couple of years on his 300ZX (11.13@135 car on good gas). He just switched to some real fats and skinnies for the car (went 11.10@126 on pump gas Wednesday night, improved from a 1.73 best 60' to a 1.48 best 60') so I borrowed his old ones.
I really wouldn't recommend that tire for a couple of reasons. First, the BFG compound is old. Nitto, Mickey Thompson and Hoosier all make much better constructed and compounded tires now. Second, they're just too wide. They throw crap all down the side of the car when you do a burnout. If you turn onto the return road too fast, they'll rub pretty hard, too. Not sure on what, but the noise isn't pleasant...
For the first three passes the track was still warm, sun was out, etc, and I just drove around the water, revved up and popped the clutch. I let it spin (the second and third passes I actually went through the lights, which they frown on, but Muncie has an extremely short box) and just went from there. I tried the same thing on my fourth pass - by then the sun had gone down, the track had been down for an hour and a half or so, and everything was stone cold - and it didn't work, spun in first and second.
On the last pass I went through the water, zipped the tires over to get them damp, pulled forward out of the water and set the e-brake hard. I dumped the clutch, let it smoke the tires until it started to drag the rears, released the e-brake and rolled out. It hooked pretty good on that one, but the driver was a spaz and couldn't find second.
I was leaving between 3000 and 4000 rpm, just releasing the clutch. Not a "sidestep" so to speak, but a pretty quick engagement. I'd like to try doing that with some sticky tires while leaving the traction control turned on.
This thing can leave harder, I just need some time to learn a set of tires - how much heat they like, what pressure, get a feel for the rpms, etc. I've had a fews years in some pretty quick RWDs, but this high-powered FWD stuff is new to me.
I'll try to get the one lousy pass video up tonight, along with a couple others of a MS3 with only a CAI running 105-106 mph on stock tires.
The tires were some seriously worn out BFG DRs, 255/60-16, mounted on 2nd Gen Probe GT wheels. A friend of mine ran them for a couple of years on his 300ZX (11.13@135 car on good gas). He just switched to some real fats and skinnies for the car (went 11.10@126 on pump gas Wednesday night, improved from a 1.73 best 60' to a 1.48 best 60') so I borrowed his old ones.
I really wouldn't recommend that tire for a couple of reasons. First, the BFG compound is old. Nitto, Mickey Thompson and Hoosier all make much better constructed and compounded tires now. Second, they're just too wide. They throw crap all down the side of the car when you do a burnout. If you turn onto the return road too fast, they'll rub pretty hard, too. Not sure on what, but the noise isn't pleasant...
For the first three passes the track was still warm, sun was out, etc, and I just drove around the water, revved up and popped the clutch. I let it spin (the second and third passes I actually went through the lights, which they frown on, but Muncie has an extremely short box) and just went from there. I tried the same thing on my fourth pass - by then the sun had gone down, the track had been down for an hour and a half or so, and everything was stone cold - and it didn't work, spun in first and second.
On the last pass I went through the water, zipped the tires over to get them damp, pulled forward out of the water and set the e-brake hard. I dumped the clutch, let it smoke the tires until it started to drag the rears, released the e-brake and rolled out. It hooked pretty good on that one, but the driver was a spaz and couldn't find second.
I was leaving between 3000 and 4000 rpm, just releasing the clutch. Not a "sidestep" so to speak, but a pretty quick engagement. I'd like to try doing that with some sticky tires while leaving the traction control turned on.
This thing can leave harder, I just need some time to learn a set of tires - how much heat they like, what pressure, get a feel for the rpms, etc. I've had a fews years in some pretty quick RWDs, but this high-powered FWD stuff is new to me.
I'll try to get the one lousy pass video up tonight, along with a couple others of a MS3 with only a CAI running 105-106 mph on stock tires.
good luck launching at those revs on street rubber. I launched at 2500 rpm and had to be very careful in 1st not to roast the tires. in rwd, once you launch, weight transfer is to your advantage. in this car, it's very much the opposite. good runs though, I am impressed!
FMOS Racing
Member
- :
- 2008 MS3, plus a pickup and a beater car
I definitely don't leave like that on street tires! Best 60' on regular radials has been a 2.15 - I slip the clutch quite a bit and then modulate the throttle.
Best street tire slip posted earlier in this thread (I'm in the left lane) - http://www.fmosracing.com/images/ms3ts2.jpg
Best street tire slip posted earlier in this thread (I'm in the left lane) - http://www.fmosracing.com/images/ms3ts2.jpg
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Thank you! I was pretty surprised. I honestly expected to see 13.30s@103 - thought the MPH would fall off a bit since a better launch means you "shorten the track" or take away time from being able to accelerate.
The tires were some seriously worn out BFG DRs, 255/60-16, mounted on 2nd Gen Probe GT wheels. A friend of mine ran them for a couple of years on his 300ZX (11.13@135 car on good gas). He just switched to some real fats and skinnies for the car (went 11.10@126 on pump gas Wednesday night, improved from a 1.73 best 60' to a 1.48 best 60') so I borrowed his old ones.
I really wouldn't recommend that tire for a couple of reasons. First, the BFG compound is old. Nitto, Mickey Thompson and Hoosier all make much better constructed and compounded tires now. Second, they're just too wide. They throw crap all down the side of the car when you do a burnout. If you turn onto the return road too fast, they'll rub pretty hard, too. Not sure on what, but the noise isn't pleasant...
For the first three passes the track was still warm, sun was out, etc, and I just drove around the water, revved up and popped the clutch. I let it spin (the second and third passes I actually went through the lights, which they frown on, but Muncie has an extremely short box) and just went from there. I tried the same thing on my fourth pass - by then the sun had gone down, the track had been down for an hour and a half or so, and everything was stone cold - and it didn't work, spun in first and second.
On the last pass I went through the water, zipped the tires over to get them damp, pulled forward out of the water and set the e-brake hard. I dumped the clutch, let it smoke the tires until it started to drag the rears, released the e-brake and rolled out. It hooked pretty good on that one, but the driver was a spaz and couldn't find second.
I was leaving between 3000 and 4000 rpm, just releasing the clutch. Not a "sidestep" so to speak, but a pretty quick engagement. I'd like to try doing that with some sticky tires while leaving the traction control turned on.
This thing can leave harder, I just need some time to learn a set of tires - how much heat they like, what pressure, get a feel for the rpms, etc. I've had a fews years in some pretty quick RWDs, but this high-powered FWD stuff is new to me.
awesome writeup, thanks man(rockon)
I'll try to get the one lousy pass video up tonight, along with a couple others of a MS3 with only a CAI running 105-106 mph on stock tires.
AutoEuphoria
Member
- :
- '08 CPW Mazdaspeed 3
I ran a 13.78 @ 103mph a couple of weeks ago. Having major issues with my boost controller, too
Stock tires (lowered in front to 24psi, raised in rear to 40psi)
RPMC turbo inlet pipe
Corksport catless midpipe
Corksport catless downpipe
TurboSmart MBC (acting up...15, maybe 16 psi)
AWR motor mount
Forge BPV (blue spring, 2 shims)
Stock tires (lowered in front to 24psi, raised in rear to 40psi)
RPMC turbo inlet pipe
Corksport catless midpipe
Corksport catless downpipe
TurboSmart MBC (acting up...15, maybe 16 psi)
AWR motor mount
Forge BPV (blue spring, 2 shims)
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FMOS Racing
Member
- :
- 2008 MS3, plus a pickup and a beater car
The video of the 13.55 pass and the timeslips that sort of ties everything together - http://www.youtube.com/watch?v=-aOqOURZRwY
"Before and after" for the Injen CAI on Dan Murney's '08 - http://www.youtube.com/watch?v=GkyfzbP2vWw (Don't have it on video, but he also trapped 107 last Wednesday night).
[Edit] Redid the video so the timeslips could be read. Movie Maker doesn't make it very easy to show parts of images but I did the best I could.
"Before and after" for the Injen CAI on Dan Murney's '08 - http://www.youtube.com/watch?v=GkyfzbP2vWw (Don't have it on video, but he also trapped 107 last Wednesday night).
[Edit] Redid the video so the timeslips could be read. Movie Maker doesn't make it very easy to show parts of images but I did the best I could.
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FMOS Racing
Member
- :
- 2008 MS3, plus a pickup and a beater car
Is it April yet? Man, I hate winter.
Got some drag tires and some FD RX-7 wheels to use with them. Also got a spot on the late May Pinks:All Out to be held at IRP. Not sure if I'll run the 3 or the pickup truck. If I can get the 3 to go sub-12.50s, I'll probably run that. Not likely to make the field with either vehicle, but I'm still excited about it.
Got some drag tires and some FD RX-7 wheels to use with them. Also got a spot on the late May Pinks:All Out to be held at IRP. Not sure if I'll run the 3 or the pickup truck. If I can get the 3 to go sub-12.50s, I'll probably run that. Not likely to make the field with either vehicle, but I'm still excited about it.
fostersafb
Member
- :
- 2009 Mazdaspeed3 GT MGM
Went out last night for the first time and sucked big time!!! My best run was a 14.5 @99 with a 2.4 60 foot. The track was packed so I only got 3 runs in.
Not that I expected to be fast or anything (stage 1 flash, motor mounts and coilovers) but it seemed to me that the track was just slow in general. A couple stis ran 13.4's, some wrx's ran 14.2's, new mustang gts ran 14.3's, 2 challengers ran 13.7's and even the fox body's and camaros ran mid to high 13's.
Anyways, I did what i could to get any advantage I could get. I stiffened up the BC's to full stiff in the rear, dropped front tire pressure down to 25psi and even changed front camber to as close to 0 as I could get. I (as I'm sure most do) had a hard time launching the car. I tried a couple different tactics. first just a quick drop from about 3k which yielded wheel spin all the way through 1st and part of 2nd. I sort of purposely bogged one then mashed it and still had wheel spin. I wasnt surprised though as the stock rubber just doesnt cut it.
I am curious however if my trap speed is consistent with my mods? Other than that it was fun and oh yeah, I beat my buddy in his 98 Camaro Z28.
Not that I expected to be fast or anything (stage 1 flash, motor mounts and coilovers) but it seemed to me that the track was just slow in general. A couple stis ran 13.4's, some wrx's ran 14.2's, new mustang gts ran 14.3's, 2 challengers ran 13.7's and even the fox body's and camaros ran mid to high 13's.
Anyways, I did what i could to get any advantage I could get. I stiffened up the BC's to full stiff in the rear, dropped front tire pressure down to 25psi and even changed front camber to as close to 0 as I could get. I (as I'm sure most do) had a hard time launching the car. I tried a couple different tactics. first just a quick drop from about 3k which yielded wheel spin all the way through 1st and part of 2nd. I sort of purposely bogged one then mashed it and still had wheel spin. I wasnt surprised though as the stock rubber just doesnt cut it.
I am curious however if my trap speed is consistent with my mods? Other than that it was fun and oh yeah, I beat my buddy in his 98 Camaro Z28.
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Where did you run? I've been to the Sac Wed night drags and am always the only Mazda there. With just a MM, I trapped 98, so I think you're inline with everybody else. Oh, and you didn't suck big time, I've run plenty of times and can't launch the car worth s***, my best is a 14.8.
fostersafb
Member
- :
- 2009 Mazdaspeed3 GT MGM
Yep, sacramento raceway wed night drags. I was the only MS3 there last as well, lol. Its all about drag radials I guess.
FMOS Racing
Member
- :
- 2008 MS3, plus a pickup and a beater car
Gawd, it's about time this thread came back to life! WOOHOO for Spring!
The launch is definitely the hardest part. It can be kind of hard to learn to modulate the throttle to not overwhelm the tires. You want to keep them right at the edge of spinning. You should be able to get down to (inconsistent) 2.1 or so 60' times, which would put you knocking on the door to 13s.
The launch is definitely the hardest part. It can be kind of hard to learn to modulate the throttle to not overwhelm the tires. You want to keep them right at the edge of spinning. You should be able to get down to (inconsistent) 2.1 or so 60' times, which would put you knocking on the door to 13s.
