Quote:
|
Originally Posted by PerforminNorman
Do you happen to have all the other info?
Short time, trap speed, 1/8 mile info or maybe just a pic of the time slip. Drag radials?
Thanks.
|
Norman no drag radials this time.
Quote from John's thread: Over on CF
Sometimes good ETs happen when the weather isn’t particularly favorable, especially when the platform under test is a C6Z. Waynet and I shared that common experience at Cecil County Dragway today.
The Density Altitude (DA) we faced measured 1250-1600 feet with a good barometer of 30.20 but air temps in the mid-high 70s and some humidity, a remnant of the yesterday’s storm. In fact, racing today was delayed 90 minutes while the jet dryers rid the water from the lanes and staging area.
We were joined today by about 400 cars driven by owners jones-ing after rainouts last Sunday, plus this Friday and Saturday. The crowd made for a long day. But patience had its reward.
Waynet will post his report separately and I witnessed his super runs.
I made two full passes that benefited from the experiments I’d been doing through 10 passes the last two days at the track…trying to find a way around the finicky C6Z clutch and the toll exacted by Torque Management.
After hammering the car on the drive up to Cecil…3d gear to redline several times, just to remind the ECU/PCM who’s boss, I cooled the car for about four hours before making the first pass. DA was 1250 feet, as measured on my TAG weather station. Here are the splits.
60'........1.848
330'......4.905
660'......7.370 @ 101.38
1000'.....9.470
1320'...11.244 @ 127.03
Two hour later I made a second pass. DA had risen to 1575 feet. The splits were:
60'........1.830
330'......4.915
660'......7.381 @ 101.31
1000'.....9.484
1320'...11.264 @ 126.91
Rear tires were set to 26 psi actual hot, adjusted in the staging lanes before each pass (psi will elevate in the sun). Fronts were at 42 psi.
Kept the coolant temp below 195. Launch rpm was 3100-3200, with a fast clutch release, followed by a progressive throttle squeeze. Throttle was on the floor at about 20-25 feet off the line. I had heated the tires with a burnout to first smoke. And then staged immediately.
My previous estimate was a lower limit of 11.20, plus or minus .03 for the car bone stock on stock tires. Given today’s passes, I suspect the lower limit to be about 11.15 in ideal conditions. And I’m growing more confident that 10.9X is a realistic aspiration bone stock on drag radials. The DRs help on the launch (had a 1.68 last time out on DRs) and help reduce spin on the 1-2 and 2-3.
Capped the day by making a third pass, only to relive the finikiness of the LS7 clutch. 3200 launch rpm, fast release…just not fast enough. Glazed the clutch. Oh, well…. No harm done. Clutch was as fine once it cooled.
On a closing note, started the day with pristine clutch fluid. Made three passes. Fluid is now very dark amber and in need of a change.
Also should mention that the C6Z hauls azzzz, and a lot of cargo. Today mine carried:
pair of 345.30.18 DRs
large carpet fan for cooling the motor between passes
Honda generator to power the fan
cooler
racing jack
tool box
Detailing supplies
bag of track munchies/drinking water/coffee
Had enough room left for a soft-sided overnight bag.
Enjoyed visiting with waynet, whose report should appear shortly, and his enthusiastic rooting section.
Best regards to all,
Ranger
You can keep up with the quest. I watched him a couple weeks ago, but he will need another track rental as they will boot him before he gets a chance at tens unless it is his first run.
My baby Z was the 12th Z06 to roll off the line on July 10, 2006. It was the 148th Z06 to roll off the production line for 2007 and I picked her up on August 2nd!! 
Linear Mode
