New PB in the sedan
03-12-2007, 07:31 AM
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New PB in the sedan
I don't post much here, mainly over at g35driver.com. I've already posted about my times there. I'd like to share them here to get a little more feedback.
Before that, a little history. Back in December of 05 I hit a 13.791@102.22 in my 05 6MT Sedan(revup). It was 25 degrees out, with a DA of -1666ft. At the time I had a k&n filter, ztube, crawford cats, and all season tires. Since then, I have not been able to touch the 13's, even with more mods and more power. I was continuously owned by my launches.
A couple of weeks ago I got a new longblock due to oil consumption. While the engine was out, I got the dealer to put on headers. 3 weeks later, I had Sharif tune the car with a utec. At his dyno, I'm putting down 246hp at peak(can't remember torque). At the local dynojet, I'm putting down 265/251, SAE.
Now my mods are all the NA boltons, minus pullies: stillen airbox, ztube, mrev+, ichiba headers, kinetix test pipes, and stillen exhaust. I'm also running a clutchmasters stage1 clutch and JWT flywheel. And I also just bought a set of 16" enkeis with 255/50/16 BFG's.
Saturday was the opening day for the 1/4 track in Steele Alabama. For the first couple of hours, there was almost nobody running, so I got to hotlap. My launches were *much* better than before with the DR's, but would be considered poor to average for street tires on a z. The problem is I couldn't heat them up. I pulled the brake light fuse(labeled stop lamp, correct?), and the ecu would still cut power as soon as I applied the brakes. So the most I could do was to just spin the rears for a few rotations and a couple of feet. Temps were in the mid 70s that afternoon, with DA's at around 1950 feet.
I started out running 25psi, then dropped the rears to 22psi, then finally 19psi. I could have tried a bit lower than that, but the rear end was too lively for my comfort at the top-end. At 19psi, I could clutch-drop at 4500 rpms and cut mid 2.0's. There was plenty of spin, but fortunately no wheel hop. If I feathered the clutch, I would bog and times would suffer. If I launched at greater than 4500, I would wheel hop and times would suffer.
I got 20 runs in for the day. The first two runs were low 14's at 101/102. The third run I saw a 13.9 for the first time in almost a year and a half. After that, I didn't touch the 14's unless I missed a shift. Here's a quick synopsis of my runs:
Of 20 runs, I missed shifts on 7 passes. That's a miss rate of 35%.
Of 20 runs, I had 2 2.3 sixties, 3 2.2's, 10 2.1's, and 5 2.0's.
Of 20 runs, I had 7 14 second passes, 11 13 second passes, and 2 runs where I just cruised after screwing up.
For the day, I trapped 100mph or greater where I didn't miss a shift
Once I dropped the pressure to 19psi, I didn't touch the 14's again unless I missed a shift.
On one run(#15), I hit a 13.9@100 and had a passenger. The guy was maybe 6'1", and around 200lbs.
On one run, I missed fourth and still ran a 13.8@98.
I had three passes that beat my previous best. Not by a lot, but better nonetheless.
Of the 20 runs, I had 5 passes where I broke into the 8's in the 1/8th. I haven't been in the 8's since the last time I saw the 13's in December of 05. Two of those were 8.8's.
I'm averaging 21mph in the last half of the track. Less than I had hoped.
My 13th run netted a 13.711@101.60, followed up by a 13.708@101.99.
There's still a couple of tenths left in the launch, so I hope to hit a low 13.5 or high 13.4. But I think I'm done for power. I might trap 103 in cooler weather.
And for davidv, I haven't scanned the slips yet.
Sorry for the long post.
Before that, a little history. Back in December of 05 I hit a 13.791@102.22 in my 05 6MT Sedan(revup). It was 25 degrees out, with a DA of -1666ft. At the time I had a k&n filter, ztube, crawford cats, and all season tires. Since then, I have not been able to touch the 13's, even with more mods and more power. I was continuously owned by my launches.
A couple of weeks ago I got a new longblock due to oil consumption. While the engine was out, I got the dealer to put on headers. 3 weeks later, I had Sharif tune the car with a utec. At his dyno, I'm putting down 246hp at peak(can't remember torque). At the local dynojet, I'm putting down 265/251, SAE.
Now my mods are all the NA boltons, minus pullies: stillen airbox, ztube, mrev+, ichiba headers, kinetix test pipes, and stillen exhaust. I'm also running a clutchmasters stage1 clutch and JWT flywheel. And I also just bought a set of 16" enkeis with 255/50/16 BFG's.
Saturday was the opening day for the 1/4 track in Steele Alabama. For the first couple of hours, there was almost nobody running, so I got to hotlap. My launches were *much* better than before with the DR's, but would be considered poor to average for street tires on a z. The problem is I couldn't heat them up. I pulled the brake light fuse(labeled stop lamp, correct?), and the ecu would still cut power as soon as I applied the brakes. So the most I could do was to just spin the rears for a few rotations and a couple of feet. Temps were in the mid 70s that afternoon, with DA's at around 1950 feet.
I started out running 25psi, then dropped the rears to 22psi, then finally 19psi. I could have tried a bit lower than that, but the rear end was too lively for my comfort at the top-end. At 19psi, I could clutch-drop at 4500 rpms and cut mid 2.0's. There was plenty of spin, but fortunately no wheel hop. If I feathered the clutch, I would bog and times would suffer. If I launched at greater than 4500, I would wheel hop and times would suffer.
I got 20 runs in for the day. The first two runs were low 14's at 101/102. The third run I saw a 13.9 for the first time in almost a year and a half. After that, I didn't touch the 14's unless I missed a shift. Here's a quick synopsis of my runs:
Of 20 runs, I missed shifts on 7 passes. That's a miss rate of 35%.
Of 20 runs, I had 2 2.3 sixties, 3 2.2's, 10 2.1's, and 5 2.0's.
Of 20 runs, I had 7 14 second passes, 11 13 second passes, and 2 runs where I just cruised after screwing up.
For the day, I trapped 100mph or greater where I didn't miss a shift
Once I dropped the pressure to 19psi, I didn't touch the 14's again unless I missed a shift.
On one run(#15), I hit a 13.9@100 and had a passenger. The guy was maybe 6'1", and around 200lbs.
On one run, I missed fourth and still ran a 13.8@98.
I had three passes that beat my previous best. Not by a lot, but better nonetheless.
Of the 20 runs, I had 5 passes where I broke into the 8's in the 1/8th. I haven't been in the 8's since the last time I saw the 13's in December of 05. Two of those were 8.8's.
I'm averaging 21mph in the last half of the track. Less than I had hoped.
My 13th run netted a 13.711@101.60, followed up by a 13.708@101.99.
There's still a couple of tenths left in the launch, so I hope to hit a low 13.5 or high 13.4. But I think I'm done for power. I might trap 103 in cooler weather.
And for davidv, I haven't scanned the slips yet.
Sorry for the long post.
03-12-2007, 02:38 PM
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Congrats on getting a better time man. You need to try and make it out this sunday. Maybe i can help you on the launch. I'm was 340 treadwear tires running 1.9 60fts. Which netted my 13.4@103.59
03-12-2007, 11:23 PM
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Those are pretty good times for a sedan. Thats pretty cool. 20 runs in one day too. I would like to go to a track like that. Just to be able to do more then like 5-6 passes at my track is a blessing. Its also about a 2 hour drive for me!
03-13-2007, 07:08 AM
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Originally Posted by 04treefiddy
Congrats on getting a better time man. You need to try and make it out this sunday. Maybe i can help you on the launch. I'm was 340 treadwear tires running 1.9 60fts. Which netted my 13.4@103.59
You'll be at the z nationals thing the week after next won't you?
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03-13-2007, 05:24 PM
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Here are the slips. Sorry for the quality, but my scanner is crappy.
The white timeslip is my best time. It was against my best friend's stage 2 SRT-4. For that run, he had a passener filming. You can ignore the reaction times; I wasn't running against the lights that day.
The yellow slip was the previous run, which was my PB for all of 30 minutes. I was in the right lane for both runs.
The white timeslip is my best time. It was against my best friend's stage 2 SRT-4. For that run, he had a passener filming. You can ignore the reaction times; I wasn't running against the lights that day.
The yellow slip was the previous run, which was my PB for all of 30 minutes. I was in the right lane for both runs.
03-13-2007, 05:34 PM
#10
Originally Posted by trey.hutcheson
I'd love to come out Sunday, but that's my son's 10 year birthday.
he needs to drive sometime, think of what a great birthday that would be for him.
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