New personal best 11.802@116.07 - In a Bone Stock 2002 Z06
11-18-2002, 08:24 AM
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Melting Slicks
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New personal best 11.802@116.07 - In a Bone Stock 2002 Z06
Well, I have had the car back for awhile since getting a new clutch installed. I had driven about 200-300 easy miles trying to "season" the new clutch and make sure it was "bedded" in properly before making any passes in the car. Last night was supposed to get cold (like down in the 40's). So, I decided that I would go out to HRP to try and make some passes in the car.
Rather than go out and smoke the brand new clutch, I decided that I would take the car out on ET Streets. I have cut about the same 60' on the radials vs the ET Streets, the main difference is that on the ET Streets I can "pop" the clutch rather than "ride it out" like I do on the radials. I think this is much easier on the stock clutch which is what I am after right now. I really don't want to have to put another clutch in anytime soon.
I was able to get in 9 passes from 6:45 to 10:30.
I ran the car with 14psi in the rears. On the first pass I pulled a good burnout since I hadn't used the ET Streets in many months. I staged the car and brought it up to 5000. It was "instant green", so R/T is immaterial. The car acted really stupid at this point. I un-clutched it and it rolled out, but it didn't feel quite right. I went to pull 2nd and discovered why. The clutch was stuck to the floor again. This time it was stuck, and slipping badly. To put it mildly, I was very upset. I chopped throttle, and the clutch pedal sprung back up. I put the car into second and finished that pass. I picked up the slip at the timing tower to find out I had run a whopping 12.842@114.79...
60 - 1.839
330 - 5.693
1/8 - 8.522
mph - 89.08
1000 - 10.873
1/4 12.842
mph - 114.79
Now I was a bit worried. Was a stock clutch going to be able to hold the car on ET Streets? Why was my clutch acting so stupid. I decided that the possibility was there that perhaps the new clutch needed a good pass to get settled in, and that even though I had made some easy passes on the street, that perhaps the first pass on the new clutch should have been a bit easier.
I let the car cool down, and put it back in line.
For the next pass I was lined up beside an open headered 68 Camaro. I indicated to the official that I didn't want to run that car since I couldn't hear, and besides in many cases I don't run some of those cars since many have a tendency to have way too much motor for way too little chassis. He didn't see things my way and indicated that I had to run this car. Things got a bit heated and he told me if I didn't run that car I would be thrown out of the track. I knew this not to be the case, and that he was the person with whom you indicated if you wanted to line up with someone, etc...
I am supposed to be the next car making a pass, but instead, I now am forced to pull out of line, and I was hot... I went up to the tower to talk to the officials. They directed me to the track manager (Linwood) who was lining up cars in the staging lanes. I went to talk to him. He told me not to worry that what I was doing was exactly what I was supposed to do. He told me to get back in line, and not worry about it. He got on the radio and called the guy I had problems with and explained things to him.
As I pulled back to the line the guy I had the issue with decided it was time to have a stare down contest. So, we stared each other down, and I made my pass... As a side note, I made 8 more passes and declined running several cars. I also set up races with a couple of other Vettes. He didn't give me any more static.
This time I decided to lauch at around 4000 RPM. Went through my usual routine and got the car staged. I launched, and the car bogged. The pass was better, the clutch seemed to stick well, but as I said the car bogged.
60 - 1.792
330 - 5.095
1/8 - 7.792
mph - 92.23
1000 - 10.092
1/4 - 12.038
mph - 115.91
The next pass was about he same except I launched the car @ 4500. The car bogged even worse than the launch @ 4000. And, I slowed down a hundredth. But in both passes the clutch seemed to stick with no real hints of slippage. Also, the clutch wasn't getting stinky. The time slip was as follows:
60 - 1.807
330 - 5.136
1/8 - 7.820
mph - 92.57
1000 - 10.109
1/4 - 12.042
mph - 116.69
Temperature had started out in the mid 60's with low humidity. As night fall came it began to cool off, but the humidity came up. DA was in the -100s, and was fluctuating up and down but showing a generally downward slope.
I began moving my launch RPMs up on each successive pass. The next pass I went back to my original 5000 RPM, and the clutch stuck with no problem. As in the previous passes the car "hit the tires" resulting in just a bit of wheel spin followed by the car bogging just a bit. The results were better, and I felt like I was moving in the right direction.
60 - 1.746
330 - 5.037
1/8 - 7.716
mph - 92.57
1000 - 10.005
1/4 - 11.935
mph - 116.79
A look at the weather station showed that we were looking at about a -460DA. Temperature was about 58F. 78% humidity and the barometer was at 30.08.
The 11.935 was the second best time I had made in the car to date. The 11.933 I had run last year was with a 1.85 60' and the mph was 114.52. That run was with the stock cover on the air box, and on the stock F1SC radials.
For the next pass I decided to move past my 5000 rpm launch window and look to launch around 5200 or so. The car launched clean, and the pass felt very good. And then tragedy struck. I did something that I haven't done in a long time, and something I have never done in the Z. I missed the 3-4 shift. Here I am cooking along on a textbook and I crunch 4th. I could not believe it. Once I missed it I just pushed the clutch in and coasted the rest of the way down the track. I picked up my time slip which further re-enforced my belief that this was a pretty good pass. Up until I blew it...
60 - 1.689
330 - 4.946
1/8 - 7.622
mph - 92.70
1000 - 9.916
1/4 - 12.035
mph - 101.34
One thing I did notice was that the clutch pedal seems to be a bit soft after my burnout. So, I decided to test something which seemed to help a bit. After I pulled my burnout, I would roll up, turn on the pre-stage beam, and then pump the clutch 4 or 5 times. This seemed to help out on pedal firmness.
I brought the car back around for the next pass. Again, I moved my launch rpm up a bit more. I brought it up to about 5500. Again, the car would "hit the tires" as it did on all previous passes. It would spin them for about 10 feet, bog slightly as it hooked and then just move out. I was able to power shift the car without any problem, and I could not hear the car "hit the tires" on any of my other shifts.
60 - 1.687
330 - 4.945
1/8 - 7.630
mph - 92.51
1000 - 9.924
1/4 - 11.865
mph - 116.27
The DA for that run was about -412. As I said, it would fluctuate up and down, but showed a general downward trend.
The next pass I was lined up with another Z06. I had a Vortex on it, but was otherwise stock (performance wise). I had given its owner a few tips after his first couple of passes and he had been able to drop over .5 by making a few changes to his driving style. He was quite happy with he cars performance thus far especially since he was able to drop .5 and pick up several MPH.
He rolled all the way in, so as soon as I turned on the second beam the dropped the tree. I was not ready and he just left on me. I was bring the revs up, and just dumped the clutch at about 5500. Instead of "popping" the clutch this was almost more like one of my radial tire launches. I ran the other guy down quickly and ended up beating him by about 3-4 lengths. After the pass he explained that he had missed 4th and had run a 12.80.
I picked up my slip at the timing booth and was pleased to see the following:
60 - 1.685
330 - 4.909
1/8 - 7.594
mph - 92-54
1000 - 9.890
1/4 - 11.831
mph - 116.04
They had a couple of kids working the booth, and they just handed me my slip and smiled. No one asked me about a cage the whole night... Life at this point was looking good. The lines were starting to get shorter as it was getting late. This meant my passes were getting closer together. I started to smell a bit of clutch stink, and new it was probably best if I wrapped things up pretty soon.
I lined up for my next pass and decided to launch @ 6000 to see if the car would do any better. It hit the tires and spun about 10ft or so. The rest of the pass felt pretty good. I picked up my slip and was both happy, and just a bit disappointed.
60 - 1.708
330 - 4.908
1/8 - 7.576
mph - 92.85
1000 - 9.866
1/4 - 11.802
mph - 116.55
I was .003 away from an 11.79. I know, I know. An 11.80 in a stock Z06 is pretty darn cool. But an 11.70 would have been even cooler. I decided that I would make one more pass for the night in an effort to see if there was an 11.70 in the cards.
I pulled the car around and quickly and got back into line. By this time there were only 1 line of cars left that were lined up to run. They put us in another line, and I was 4th or 5th in that group. They pulled us around and I lined up to make what would hopefully be my best pass yet.
I pulled my burnout, and they dropped the tree. The car hit the tires and spun, but this time I noticed that it hit the tires on every gear change. I knew this meant one of two things either the car was pulling even harder and I was on one whale of a pass, or the track was going away. When I picked up my slip I discovered it to be the latter.
60 - 1.673
330 - 4.955
1/8 - 7.643
mph - 92.26
1000 - 9.942
1/4 - 11.884
mph - 116.07
The track was finally getting cold enough that it wasn't going to hook anymore. So, I decided to take the car to the shop and put it up for the night. All in all I was pretty happy with the cars performance. One of the things I did note out there was the Blu-By-U was out there wit his car. He recently installed the VaraRam on his car. We started comparing time slips. Now, keep in mind he was on Drag Radials and I was on ET Streets. But, he was trapping 3 mph faster than me at the 1/8 mile. Most of my times were in the 92's he was trapping 95 and running almost 118mph trap speeds. His ETs were down to mine, but that can be explained by the differences in our launches. I found this to be very interesting. Now, one other thing to consider is that the ET Street @ 14psi does have a lot more rolling resistance than a drag radial. But, I still found 3mph to be quite impressive considering the softer launches.
I guess I will have to wait for that -3500 DA day when it is 45-50 degrees, around 40% humidity, and over 30.xx on the barometer. If I can get one of those days I feel pretty certain a 11.70 or perhaps even an 11.60 can be had...
Rather than go out and smoke the brand new clutch, I decided that I would take the car out on ET Streets. I have cut about the same 60' on the radials vs the ET Streets, the main difference is that on the ET Streets I can "pop" the clutch rather than "ride it out" like I do on the radials. I think this is much easier on the stock clutch which is what I am after right now. I really don't want to have to put another clutch in anytime soon.
I was able to get in 9 passes from 6:45 to 10:30.
I ran the car with 14psi in the rears. On the first pass I pulled a good burnout since I hadn't used the ET Streets in many months. I staged the car and brought it up to 5000. It was "instant green", so R/T is immaterial. The car acted really stupid at this point. I un-clutched it and it rolled out, but it didn't feel quite right. I went to pull 2nd and discovered why. The clutch was stuck to the floor again. This time it was stuck, and slipping badly. To put it mildly, I was very upset. I chopped throttle, and the clutch pedal sprung back up. I put the car into second and finished that pass. I picked up the slip at the timing tower to find out I had run a whopping 12.842@114.79...
60 - 1.839
330 - 5.693
1/8 - 8.522
mph - 89.08
1000 - 10.873
1/4 12.842
mph - 114.79
Now I was a bit worried. Was a stock clutch going to be able to hold the car on ET Streets? Why was my clutch acting so stupid. I decided that the possibility was there that perhaps the new clutch needed a good pass to get settled in, and that even though I had made some easy passes on the street, that perhaps the first pass on the new clutch should have been a bit easier.
I let the car cool down, and put it back in line.
For the next pass I was lined up beside an open headered 68 Camaro. I indicated to the official that I didn't want to run that car since I couldn't hear, and besides in many cases I don't run some of those cars since many have a tendency to have way too much motor for way too little chassis. He didn't see things my way and indicated that I had to run this car. Things got a bit heated and he told me if I didn't run that car I would be thrown out of the track. I knew this not to be the case, and that he was the person with whom you indicated if you wanted to line up with someone, etc...
I am supposed to be the next car making a pass, but instead, I now am forced to pull out of line, and I was hot... I went up to the tower to talk to the officials. They directed me to the track manager (Linwood) who was lining up cars in the staging lanes. I went to talk to him. He told me not to worry that what I was doing was exactly what I was supposed to do. He told me to get back in line, and not worry about it. He got on the radio and called the guy I had problems with and explained things to him.
As I pulled back to the line the guy I had the issue with decided it was time to have a stare down contest. So, we stared each other down, and I made my pass... As a side note, I made 8 more passes and declined running several cars. I also set up races with a couple of other Vettes. He didn't give me any more static.
This time I decided to lauch at around 4000 RPM. Went through my usual routine and got the car staged. I launched, and the car bogged. The pass was better, the clutch seemed to stick well, but as I said the car bogged.
60 - 1.792
330 - 5.095
1/8 - 7.792
mph - 92.23
1000 - 10.092
1/4 - 12.038
mph - 115.91
The next pass was about he same except I launched the car @ 4500. The car bogged even worse than the launch @ 4000. And, I slowed down a hundredth. But in both passes the clutch seemed to stick with no real hints of slippage. Also, the clutch wasn't getting stinky. The time slip was as follows:
60 - 1.807
330 - 5.136
1/8 - 7.820
mph - 92.57
1000 - 10.109
1/4 - 12.042
mph - 116.69
Temperature had started out in the mid 60's with low humidity. As night fall came it began to cool off, but the humidity came up. DA was in the -100s, and was fluctuating up and down but showing a generally downward slope.
I began moving my launch RPMs up on each successive pass. The next pass I went back to my original 5000 RPM, and the clutch stuck with no problem. As in the previous passes the car "hit the tires" resulting in just a bit of wheel spin followed by the car bogging just a bit. The results were better, and I felt like I was moving in the right direction.
60 - 1.746
330 - 5.037
1/8 - 7.716
mph - 92.57
1000 - 10.005
1/4 - 11.935
mph - 116.79
A look at the weather station showed that we were looking at about a -460DA. Temperature was about 58F. 78% humidity and the barometer was at 30.08.
The 11.935 was the second best time I had made in the car to date. The 11.933 I had run last year was with a 1.85 60' and the mph was 114.52. That run was with the stock cover on the air box, and on the stock F1SC radials.
For the next pass I decided to move past my 5000 rpm launch window and look to launch around 5200 or so. The car launched clean, and the pass felt very good. And then tragedy struck. I did something that I haven't done in a long time, and something I have never done in the Z. I missed the 3-4 shift. Here I am cooking along on a textbook and I crunch 4th. I could not believe it. Once I missed it I just pushed the clutch in and coasted the rest of the way down the track. I picked up my time slip which further re-enforced my belief that this was a pretty good pass. Up until I blew it...
60 - 1.689
330 - 4.946
1/8 - 7.622
mph - 92.70
1000 - 9.916
1/4 - 12.035
mph - 101.34
One thing I did notice was that the clutch pedal seems to be a bit soft after my burnout. So, I decided to test something which seemed to help a bit. After I pulled my burnout, I would roll up, turn on the pre-stage beam, and then pump the clutch 4 or 5 times. This seemed to help out on pedal firmness.
I brought the car back around for the next pass. Again, I moved my launch rpm up a bit more. I brought it up to about 5500. Again, the car would "hit the tires" as it did on all previous passes. It would spin them for about 10 feet, bog slightly as it hooked and then just move out. I was able to power shift the car without any problem, and I could not hear the car "hit the tires" on any of my other shifts.
60 - 1.687
330 - 4.945
1/8 - 7.630
mph - 92.51
1000 - 9.924
1/4 - 11.865
mph - 116.27
The DA for that run was about -412. As I said, it would fluctuate up and down, but showed a general downward trend.
The next pass I was lined up with another Z06. I had a Vortex on it, but was otherwise stock (performance wise). I had given its owner a few tips after his first couple of passes and he had been able to drop over .5 by making a few changes to his driving style. He was quite happy with he cars performance thus far especially since he was able to drop .5 and pick up several MPH.
He rolled all the way in, so as soon as I turned on the second beam the dropped the tree. I was not ready and he just left on me. I was bring the revs up, and just dumped the clutch at about 5500. Instead of "popping" the clutch this was almost more like one of my radial tire launches. I ran the other guy down quickly and ended up beating him by about 3-4 lengths. After the pass he explained that he had missed 4th and had run a 12.80.
I picked up my slip at the timing booth and was pleased to see the following:
60 - 1.685
330 - 4.909
1/8 - 7.594
mph - 92-54
1000 - 9.890
1/4 - 11.831
mph - 116.04
They had a couple of kids working the booth, and they just handed me my slip and smiled. No one asked me about a cage the whole night... Life at this point was looking good. The lines were starting to get shorter as it was getting late. This meant my passes were getting closer together. I started to smell a bit of clutch stink, and new it was probably best if I wrapped things up pretty soon.
I lined up for my next pass and decided to launch @ 6000 to see if the car would do any better. It hit the tires and spun about 10ft or so. The rest of the pass felt pretty good. I picked up my slip and was both happy, and just a bit disappointed.
60 - 1.708
330 - 4.908
1/8 - 7.576
mph - 92.85
1000 - 9.866
1/4 - 11.802
mph - 116.55
I was .003 away from an 11.79. I know, I know. An 11.80 in a stock Z06 is pretty darn cool. But an 11.70 would have been even cooler. I decided that I would make one more pass for the night in an effort to see if there was an 11.70 in the cards.
I pulled the car around and quickly and got back into line. By this time there were only 1 line of cars left that were lined up to run. They put us in another line, and I was 4th or 5th in that group. They pulled us around and I lined up to make what would hopefully be my best pass yet.
I pulled my burnout, and they dropped the tree. The car hit the tires and spun, but this time I noticed that it hit the tires on every gear change. I knew this meant one of two things either the car was pulling even harder and I was on one whale of a pass, or the track was going away. When I picked up my slip I discovered it to be the latter.
60 - 1.673
330 - 4.955
1/8 - 7.643
mph - 92.26
1000 - 9.942
1/4 - 11.884
mph - 116.07
The track was finally getting cold enough that it wasn't going to hook anymore. So, I decided to take the car to the shop and put it up for the night. All in all I was pretty happy with the cars performance. One of the things I did note out there was the Blu-By-U was out there wit his car. He recently installed the VaraRam on his car. We started comparing time slips. Now, keep in mind he was on Drag Radials and I was on ET Streets. But, he was trapping 3 mph faster than me at the 1/8 mile. Most of my times were in the 92's he was trapping 95 and running almost 118mph trap speeds. His ETs were down to mine, but that can be explained by the differences in our launches. I found this to be very interesting. Now, one other thing to consider is that the ET Street @ 14psi does have a lot more rolling resistance than a drag radial. But, I still found 3mph to be quite impressive considering the softer launches.
I guess I will have to wait for that -3500 DA day when it is 45-50 degrees, around 40% humidity, and over 30.xx on the barometer. If I can get one of those days I feel pretty certain a 11.70 or perhaps even an 11.60 can be had...
11-18-2002, 01:27 PM
#3
Le Mans Master
Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (J-Rod)
I did note out there was the Blu-By-U was out there wit his car. He recently installed the VaraRam on his car. We started comparing time slips. Now, keep in mind he was on Drag Radials and I was on ET Streets. But, he was trapping 3 mph faster than me at the 1/8 mile. Most of my times were in the 92's he was trapping 95 and running almost 118mph trap speeds.
What was wrong with the clutch and was it replaced under warranty? Were you Powershifting?
Blu-By-U said he trapped at 118.63
[Modified by rbartick, 1:27 PM 11/18/2002]
11-18-2002, 01:30 PM
#5
Melting Slicks
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Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (JWSchmidt3)
Damn, I feel like I was there. :D Thanks for the post. :cool: :cheers:
11-18-2002, 01:35 PM
#6
Melting Slicks
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Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (rbartick)
Thanks everyone...
rbatrick -
I must have gotten my fact wrong on Blu. I should have said almost 119.
The clutch was replaced under the techline bulletin. It was sticking to the floor on hard launches.
[Modified by J-Rod, 1:35 PM 11/18/2002]
rbatrick -
I must have gotten my fact wrong on Blu. I should have said almost 119.
The clutch was replaced under the techline bulletin. It was sticking to the floor on hard launches.
[Modified by J-Rod, 1:35 PM 11/18/2002]
11-18-2002, 01:36 PM
#7
Le Mans Master
Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (JWSchmidt3)
Damn, I feel like I was there. :D Thaks for the post. :cool: :cheers:
:smash: MRR
11-18-2002, 03:43 PM
#9
Le Mans Master
Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (J-Rod)
nice job J-Rod!! Those 60fts were insane considering the track prep. My buds in the stangs said it was better earlier in the outing, but went away as the night went on.
You da man!! :cheers:
You da man!! :cheers:
11-19-2002, 12:22 AM
#10
Team Owner
Member Since: Apr 2001
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St. Jude Donor '06
Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (J-Rod)
Congrats JROD! :cheers: AWesome driving and killer car! :cool:
Keeo up the good work!
MTI 427 Roadster f/k/a Nitrovette
Keeo up the good work!
MTI 427 Roadster f/k/a Nitrovette
11-19-2002, 02:07 AM
#11
Melting Slicks
Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (J-Rod)
J-Rod,
Excellent work at the drags. Is this car COMPLETELY stock using only ET streets? If so, WOW. Thats great.
Excellent work at the drags. Is this car COMPLETELY stock using only ET streets? If so, WOW. Thats great.
11-19-2002, 02:35 AM
#12
Burning Brakes
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Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (427CPE)
That means I'm about there too. :)
Nice times JRod. Keep fooling with minor adjustments and you'll have a heck of a ringer there.
Nice times JRod. Keep fooling with minor adjustments and you'll have a heck of a ringer there.
11-19-2002, 06:49 AM
#15
Melting Slicks
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Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (QuickSilver97)
Thanks for the replies everyone. Hope the post didn't bore too many of you to sleep.
Again, just for the record. The car is completely stock. It still has the original paper airfilter that GM shipped it with, stock airbox, etc....
The only thing I did to the car was pull the lid/cover off the airbox, and bolt on a set of ET Streets.
Again, just for the record. The car is completely stock. It still has the original paper airfilter that GM shipped it with, stock airbox, etc....
The only thing I did to the car was pull the lid/cover off the airbox, and bolt on a set of ET Streets.
11-19-2002, 08:43 AM
#16
Melting Slicks
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Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (J-Rod)
jrod, where do you get your DA info from at the track? Do you have a meter that measures it?
I found a unit here in the Dallas area from Applied Data Sciences that measure DA, AD, temp, hum., baro. pressure, etc. unit is called Weather Logger. They are located at http://www.appdatsci.com/
I found a unit here in the Dallas area from Applied Data Sciences that measure DA, AD, temp, hum., baro. pressure, etc. unit is called Weather Logger. They are located at http://www.appdatsci.com/
11-19-2002, 02:56 PM
#18
Le Mans Master
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Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (J-Rod)
Awesome run!!!! It takes alot of skill to launch and shift a MN6 car that well....I'm impressed! :cheers:
11-20-2002, 07:21 AM
#19
Melting Slicks
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Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (RWhite)
Thanks everyone.
RWhite - One of the guys I know who was out there has a weather station. I was getting my information from him. I do not know the make or the model he was using...
RWhite - One of the guys I know who was out there has a weather station. I was getting my information from him. I do not know the make or the model he was using...
11-20-2002, 07:36 PM
#20
Le Mans Master
Re: New personal best 11.802@116.07 - In a Bone Stock 2002 Z06 (J-Rod)
So have you given any consideration to trying a vararam? It would be interesting to see if you could pick up those mph and if they would translate into e.t. improvements.