New best: 12.259@114.41

[RyanD]

This was my second time out on drag radials at 18psi.

60-ft 1.873
330-ft 5.172
1/8 7.938 @ 90.30
1000-ft 10.269
1/4 12.259 @ 114.41

I was getting 60-fts in the mid 1.8s no matter how I launched. I've been trying to dump the clutch between 3000 and 4000 to get a bit of wheel spin. Should I be going lower on tire pressure?

My best trap speed was 115.31. It seems that the 3-4 shift has a big effect on trap speed, but I'm not sure if I need to shift earlier or later. I usually try to shift at 6600-6700 into 4th.

Only 4 weeks left this year. I think I can find another tenth. Any tips?

[case2307]

Good time...I'm guessing that your car is pretty much stock.

[Kat]

Congrats on your new best

You want to shift as close to the limiter as possible without hitting it. If you don't hit it once in a while then your not shifting high enough my .02

[Wally]

Good run, Cold temps are creating great HP and very slippery tracks.

[robz]

Im running similar times you are. Your losing it on the launch. I would drop the tire pressure to 14-15psi. Depending on the track you should be in the low 1.7 range with an occasional 1.6x. The rest of your run seems great. With a 1.6x your in the 11's. Im lifting the clutch at around 4500 rpms and getting consistent 1.7x launches. Searching for 11 myself. Just a beginner here.

[Zlicious]

i will be going to the track next weekend and try to braek in to the 11's myself with Ddrag radials.

With this cool weather and a 1.70 60' time, it should happen..but maybe not, i only have an 01

[syclone01]

just curious? zlicious robz....what size, brand wheel are you using for the bfg's and what size bfg's??

[robz]

17"x11 bfg 315 35 17

[Zlicious]

9.5 x 10, 295-35-18, g-force ta

[RyanD]

Originally posted by robz
Im running similar times you are. Your losing it on the launch. I would drop the tire pressure to 14-15psi. Depending on the track you should be in the low 1.7 range with an occasional 1.6x. The rest of your run seems great. With a 1.6x your in the 11's. Im lifting the clutch at around 4500 rpms and getting consistent 1.7x launches. Searching for 11 myself. Just a beginner here.

So I can drop the pressure as low as 14psi? I didn't know what the low limit was. I'll probably try 15psi next time I go out and see if that's an improvement.

[panzer]

Originally posted by Zlicious
i will be going to the track next weekend and try to braek in to the 11's myself with Ddrag radials.

With this cool weather and a 1.70 60' time, it should happen..but maybe not, i only have an 01

Don't ever say '...only a 01...' be proud

[coopz06]

Earlier this summer I ran my 03 z with 12 lbs in the ET streets and ran a 1.7x 60 ft time. I left the line at 3500 RPM and shifted at 6000 RPM to net a 12.31 ET (car is stock except the wheels and tires). 1.7x 60 ft times are typical with this setup, but beware of breaking the rear end.