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High Alt. First Time With EVO

Old May 11, 2006 | 09:36 AM
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High Alt. First Time With EVO

It was a really windy, 35-40mph head winds at Bandimere in Morrison Colorado. Which I am sure had a rather detrimental effect on the times.

I was running 91 octane, full interior, and my 275lb **** shifting like a madman.I full lift shifted on all gears, the stock clutch was not letting me NLS. Scaled in at 3500lbs with me and 1/2 a tank of gas. 22.5psi, just like Al tuned it.

My first run nearly got me thrown out, because my 15yr old cousin was riding with me and neither he or I had a Helmet. It is also illegal to break under 14.0 with a rider in the car. I granny shifted my way to:

60ft 1.816
330 5.450
1/8 8.580
MPH 79.66
1000 ft 11.2269
1/4 13.516
MPH 99.45

Next run, no launch control, left at 3500rpm

60ft 1.747
330 5.364
1/8 8.463
MPH 80.29
1000 ft 11.130
1/4 13.349
MPH 100.64

Next run, used launch control, worked quite nicely

60ft 1.723
330 5.297
1/8 8.370
MPH 80.98
1000 ft 11.017
1/4 13.232
MPH 100.43

Last run, launch control, tires spinning

60ft 1.773
330 5.355
1/8 8.337
MPH 82.35
1000 ft 11.011
1/4 13.222
MPH 102.78

This was on the stock 40k mile clutch! Next time I will lighten the load, add some race gas and knock out some 12's

Just as a side note, here is the timeslip of the 2006 Corvette which ran next to me on the 13.34 run for comparison-
60ft 2.268
330 6.301
1/8 9.521
MPH 77.19
1000 ft 12.256
1/4 14.570
MPH 99.45

He met me after the time shack and asked how much I had in the car, He was shocked to find out how minimal my mods were. He had intake, headers, and full exhaust, which cost about the same as my investment. He said his best time to date was a 14.2. Just goes to show how much altitude sucks, especially for the N/A guys.
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Old May 11, 2006 | 09:43 AM
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the last run, the wind had died down to 15-20 mph, notice the pick up in mph, had there been no wind I think I would have trapped closer to 104. I think even the pump set up has the potential to go 12's
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Old May 11, 2006 | 04:39 PM
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From: Inland Empire (Running Springs)
How did you get a 1.74 60ft time with a 3500rpm launch at 5000ft? I don't get it. Secondly you being a very large man why add more weight to the car by allowing a passenger to ride along with you. I don't car about your times but you car is being launched with a couple hundred pounds more then the average evo owner. Very hard on your drive train. What is your launch control set at? Glad you had fun and I would think with some more boost and some race gas you could see 12's, good luck
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Old May 11, 2006 | 05:28 PM
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3500, is where I start engaging the clutch while the revs are on the way up, like this
-Floor it
-Wait for revs to come up
-Start releasing clutch
-Slip for about .5 second until fully engaged at about 4000rpm
-Viola 1.74 without killing your clutch or your dirvetrain.

The Titanium turbo comes to life really early on and I bet full torque is realized (Ideal launching point) is between 3500 and 4000rpm

The reason I had a rider is my little cousin is really into cars. I am kind of like his big brother. We got a release signed so he could ride along and see what it is like. I think it was one of the high points of his life.

Launch control is at around 5k.
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Old May 11, 2006 | 08:04 PM
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From: Inland Empire (Running Springs)
things are alittle more clear now. thanks for the response and good luck with you 12's, you can do it
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Old May 11, 2006 | 10:12 PM
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From: Colorado
nice #s Timmy! MUCH, MUCH better than i did...
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Old May 11, 2006 | 10:13 PM
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Thanks, we shall see in a week or so.

We will see if my petite and delicate flower like 6'4 275lb linebacker frame can still let me run a decent time. I may be a .10 off but hey I can still bench 425lbs.... I am such a pansy....
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Old May 11, 2006 | 10:17 PM
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Originally Posted by Evo_SpeedKing
nice #s Timmy! MUCH, MUCH better than i did...
Thanks Mate!

I was one of 2 EVO's at the track out of 200+ cars

The subie guys were out and running lots of 14+'s but no EVO's

Had fun beating lots of camaros and vettes, I only lost one run to a 540ci charger on a 200 shot, he ran a 11.92 and I held him till 1/8th. But I did not need a trailer to get to the race
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Old May 12, 2006 | 01:16 PM
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Helps put my 12.30 into perspective, yah. Btw, that 3500rpm launch point is EXACTLY what kills the clutch. IT does save the drivetrain, but the more you slip, the more it heats up and kills the clutch, so be ready with a new one.
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Old May 12, 2006 | 02:01 PM
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It is a little more complicated than the floor it and slip, the gas pedal goes down at a rate of speed which is relative to the uptake on the clutch, so engagement of the clutch starts at about 25% throttle and full throttle comes in once the clutch is fully engaged. The slip has to be quite quick, just long enough to keep the tires from spinning, and the turbo from laging.

40k on a stock clutch and cutting low 1.7 60ft is hard to argue with!
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Old May 12, 2006 | 02:09 PM
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Nice to see some numbers tinytiim. By the way, what are you putting to the wheels? Maybe i missed that part??? Thanks!
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Old May 12, 2006 | 06:27 PM
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From: sc
I would est about a 7.9 - 7.8, 88 - 89mph (1/8mi) at sea level.

Driving and esp some of the launches for the mods impress the hell outta me!
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Old May 12, 2006 | 06:32 PM
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From: COLORADO
I have not had the car on the dyno. I would assume an UNCORRECTED 300whp. According to the calculators I have used 102 mph on a 3500 lb car works out to 300 at the wheels. Accitionally the 13.2 works out to right at 300 whp.


So, according to the calculators, I am driving just about as well as I can given the power output of the car.


I
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Old May 12, 2006 | 06:34 PM
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Originally Posted by C6C6CH3vo
I would est about a 7.9 - 7.8, 88 - 89mph (1/8mi) at sea level.

Driving and esp some of the launches for the mods impress the hell outta me!
thanks mate!
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Old May 12, 2006 | 06:39 PM
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what's the altitude there? And that sucks you guys have to wear helmets. You only have to wear one @ Las Vegas Motor Speedway when you run low 11's
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