C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old May 18, 2003 | 10:14 PM
  #1  
ski_dwn_it's Avatar
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Default New Update!

Well guys I got to meet a few forum member have a pretty fun day at the track.

We went to Numidia, in and out of rain the whole way there When we got there the outlook of the track canceling looked either way. As it turned out the weather broke and the day turned out beautiful.

There was a nice guy parked next to us keeping us posted on DA measurement the day swung from ~1600-1900, so the weather wasn't all that great, but who was complaining I was pumped as always just to rip off a few runs.

First run out I maintained a cooler than normal engine, ~130 when I did my burnout, and then staged, running a 57 chevy all tubbed and sounding mean. I nailed it on the third yellow getting a R/T of .535 and the car hooked like never before, I could tell I was sailing! 1-2 right at the light and the 57 was no where to be seen. The car instantly hit 2nd, then right into 3rd :mad GD'in shifter! Since I changed from the stock shifter cable, it harder than heck to feel the "clicks" when going through the gears and easier than pie to overshoot 2nd. If I go even a nats hair past 2nd the car goes righ into 3rd. So I kept her floored all the way through the traps. If you didn't know better, from the way that thing pulls you would never even know you missed 2nd gear. I blazed through the traps with an 11.31@119MPH :rolleyes: I think for sure that was my 10sec run with a 1/8 mile time of 96.4MPH!!! :eek: :thumbs: If I would have just hit that Damn Second gear. I returned to the pits and dad said that was it if you wouldn't have missed that damn second gear! I couldn't do anything but agree. :troll

I said lets check everything over real quick and get it ready for the next run. After about 2 hrs I got to run again. A guy blew apart on the second 1/2 of the track so there was a big delay while they cleaned up the track. Also on the first run the 60' time did not register, so I was a little ticked and did not know what to do with the air pressure. I ran 13 in the drivers side and 14 in the passengers. It seems to really hook well, so I just maintained that pressure for the next run.

I went out for the second run and was feeling pretty good about a decent run. The DA went up considerably as the sun came out. I did my burn much longer than before till I had a hard time holding the car and it actually pushed me forward. Seems to be the technique, that works best. I staged and again hooked like mad on the launch, with a R/T of .525 I pulled a new best 60' time 1.528 :cheers: I hammered through first and was gentle to hit the shifter and may have even overrevved 1st by 100-200 RPM, I hit 2nd and she held, so I managed not to overshift :rolleyes: I hit the shift light on the 2-3 and pulled through the traps feeling great that that run might be it. I eagerly made my way back the return lane to retrieve my slip. I got it and as I pulled away I tried to read it. Here were the results.

r/t .525
60' 1.528 :D
330 4.622
1/8 7.144
MPH 97.40 :cheers:
1000 9.336
1/4 11.186 :skep:
MPH 122.10

The car is definately getting stronger indicated by the 1/8 MPH and the new best 60' time followed by the near new best in 1/4 wih pretty crappy DA.

I am more than happy with the car and the results, but I am still after that 10sec run I KNOW is there, given the right conditions. I am still learning what the car wants and seem to be improving in every aspect.

To make a long story short, the 3rd run was a BIG disappointment. I was running with the Romulator and found a flaw in the system I think. I had it happen yesterday while taking the car for a ride, but dismissed it and in the back of my mind I was thinking about it all day. While driving through town the car just shut off like someone turned the key off. I pulled off the side of the road and tryed starting it, it fired right up and never did it again. So today my intention was to try the first run, wih the rom, then switch back to my chip. I had a few changed like I leaned it out a tad more down low in the 2k-3.5k RPM range, and the results seemed better so I just stayed with it. When I staged for the first elimination run I got matched up with a Crustang I wanted to SPank bad, just for giggles. I was nailing pretty consistant light and felt very confident that I was gonna be able to catch most anyone in the class they threw me into, Trophy (mostly 12-15 sec cars). Just as the guy poing to me to stage, I start out and bam the car just shuts off! WTF! I turn the key all the way to the off position, just as I did the day before, praying it starts with no problem. It fires right up, but again hesitates badly a few times. :mad :cuss Everytime it hesitates the SYS light illuminates for as long as it cuts out for. Gash Darn SCHLEPROCK's screwin with me! I get to the burnout and almost called it quites, thinking I am not going to run it if its not right, but quickly decide to pray the guy red lights, and then I can spit and sputter through for a win, since he had to leave before me, and then I can straighten out the ECM with my regular chip. I did a half assed burnout and then the car stalled out completely. By then the other guy is prestaged and just as mine starts he if fully staged. I decided to roll quickly into the lights and hopefully mess with his mojo, and throw off his timing enough to rattle his cage. I rolled in very quick and lit both lights, praying he red lights :blueangel: I had to keep the Rs of mine so high to keep it from stalling at one point I felt the times start to spin :crazy: The lights came down and he launched, damn no red, so I waited an eternity for my lights to come down, with the car bucking and jerking the whole time. Wanting to give it one last run I decided that if I nail it and I feel any hestitation, I'm leaving off and calling her quites. I hit it on the 3rd yellow and blahhhhh 1/2 way through second :rolleyes: :sad: I putted through the traps at about 1/4 throttle with it bucking and cutting out for long periods of time. The one guy with the corvette bunch came over right away with some others to see what happen. I was out of the car and in the passengers side fiddling around with the wires. I put my regular chip into the car and it ran perfect :rolleyes: The one guy laughed and said hey, you still turned a 14 sec 1/4 mile :lol: I don't know what I turned as I did not even stop at the booth to pick up my slip :cry

So I learned a valuable lesson today, but also had a great time with the guys there and ran some new bests. I will keep you all posted on the exact cuase of the intermittant problems associated with the Romulator. But no means do I think its anything to cause someone that is serious about tuning to avoid the product, it may even be my fault in the end as much as stuff slides around in the car on lauched. I will call them tomorrow and let you all know what I find.

( I thought this was suppose to be a quick story :rolleyes: :D :cheers:
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Old May 18, 2003 | 10:29 PM
  #2  
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Default Re: New Update! (ski_dwn_it)

:cheers:

Remember, practice makes perfect!!!!
perfect= 10.XXX

PS. Heads & intake on - valves to be adjusted Monday or Tuesday, running by end of week :yesnod:
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Old May 18, 2003 | 10:36 PM
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Default Re: New Update! (85vet)

congrats on all the new best :cheers: That mph is damn fast :smash:
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Old May 18, 2003 | 11:12 PM
  #4  
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From: Former NCM Drag Racing coordinator, National director Corvette Challenge Spring Hill, Tennessee: Whiting, New Jersey
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Default Re: New Update! (ski_dwn_it)

:cool: :cheers:
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Old May 18, 2003 | 11:18 PM
  #5  
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Default Re: New Update! (ski_dwn_it)

Are you running skinnies up front?
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Old May 18, 2003 | 11:39 PM
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Default Re: New Update! (ski_dwn_it)

Some very impressive passes; hope you get the intermittent worked out.
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Old May 19, 2003 | 08:18 AM
  #7  
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Default Re: New Update! (65Z01)

Yeah I have skinnies up front.

I slapped the original chip into the car before we put it up on the trailer. It ran perfect and then again moving it around my driveway to back it into the garage. So I definately know it not "car" related, but rather that its from the Romulator itself. I will call them today for information. MAybe I have a bum unit :confused:
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Old May 19, 2003 | 09:02 AM
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Default Re: New Update! (ski_dwn_it)

:cool: WOW.....!!!! Congrats
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Old May 19, 2003 | 08:27 PM
  #9  
ski_dwn_it's Avatar
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Default Re: New Update! (jimmyd)

85vet, let me know if you want to go to the dyno this Wednesday? We plan on being there at about 6pm :cheers: :thumbs:
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Old May 19, 2003 | 10:07 PM
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Default Re: New Update! (ski_dwn_it)

I was sitting on the side waiting for my bye run (.508 last time trial :)) and saw you launch. Looked like you were trying to do wheelies :eek: You car sounds pretty mean, once the weather is right you should see your 10's. My average was 12.37, 12.38, 12.38 all @ 114-115.I went out 3rd round running a 12.372 on a 12.38 dial with a .568 light:( My best at E-Town in decent (not perfect) weather is 11.82@118.


[Modified by RichS, 10:09 PM 5/19/2003]
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Old May 19, 2003 | 10:40 PM
  #11  
ski_dwn_it's Avatar
0ski_dwn_it
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Default Re: New Update! (RichS)

Rich good to hear you did pretty well. I was glad to be able to meet some of your crew from down around there. I hope to see you guys again sometime. be sure to send me an email of any racing events you think I might be interested in. :thumbs: :cheers:
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Old May 20, 2003 | 04:20 PM
  #12  
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Default Re: New Update! (ski_dwn_it)

Your car definitely sounded mean! I wish I could've stayed longer but I had a 2:00 Tee time. I was a bit dissappointed with the times of some of the other Vettes though. It was pretty obvious that you and Rich were the experienced drag racers of the whole Vette crew.

PS, I would've came over and talked with you guys a little bit but I kinda felt out of place since I wasn't racing. I should've just cancelled my golfing and raced. :banghead: Oh well, maybe next time.
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Old May 20, 2003 | 11:34 PM
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Default Re: New Update! (ski_dwn_it)

85vet, let me know if you want to go to the dyno this Wednesday? We plan on being there at about 6pm :cheers: :thumbs:
Wednesday, I will be there to watch and learn. Just no car Yet for me????


[Modified by 85vet, 11:36 PM 5/20/2003]


[Modified by 85vet, 11:36 PM 5/20/2003]
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