Members Best 1/4 mile Times

[72Mazda]

1/4 mile time

12.84@102mph on street tires 255/50/17 with a 1.88 60ft.
1972 Mazda truck with a RB20 top mount 57 trim turbo running 14psi.
Dyno'd 300hp to the wheels

[autodreamMarvin]

Well, I guess we won't be going to the track anymore as our local track is closing for good.

Run 1:
r/t.......0.330
60'......1.971
330'....5.370
1.8......7.936
MPH....100.18
1000'..10.028
1/4......11.775
MPH....128.66

http://vimeo.com/26248024

Run 2:
r/t.......0.652
60'......1.962
330'....5.252
1/8......7.730
MPH....102.08
1000'..9.812
1/4.....11.552
MPH....127.91

Still bogs really bad off the line. We need more seat time, even the driver has never launched an awd car before.

[MKIV]

Okay this was my first ever time at the track and I know these numbers are really ugly, but here goes

R/T - 0.820
60' - 3.001
1/4 - 14.120
MPH - 106.54

A lot of people told me my car should easily be a 13 second car, so I'm hoping for improvement when I go for my second time!

[trickey1991]

R/T - 0.604
60' - 2.940
1/4 - 13.860
MPH - 104.56

RB20DET . 55mm Precision 12psi 251whp on 215/45/17... 9.5" wide rim hellastretch muahhh

[trickey1991]

this guy is too legit to quit

7.2 @ 186mph 1.04 60ft, 4.5 @ 150 1/2 track. RB30 on petrol.

[MKIV]

Noobish question, but, does my reaction time play a factor if I'm trying to shave off my 60' time?

[evilgtr]

No not at all, you can sit at the light all day the clock doesnt start until your tires break the beam.

[RogueArcher]

Date: September 27 2011
Track: Napierville Dragway
Reaction: 0.389
60': 2.052
330': 5.763
1/8: 8.763 @ 81.87mph
1000': 11.304
1/4: 13.410 @107.97mph

Mods: HKS air filters, Apex-i downpipe, Unknown Catback. Boost restrictor removed.

[red35]

new best for me

11.66@123mph 1.8 60 ft

[MKIV]

new best for me

11.66@123mph 1.8 60 ft

Good time! Is that your daily driver?

[red35]

No it is not. I have a few cars but this one is the best at the track. Hoping for real low 11's or high 10's next year.

[evilgtr]

What's your launch secret ? Do you use launch control/ 2 step or slip the clutch while loading with the hand brake ?

[MKIV]

With launch control, don't you still have to engage the clutch a minimal amount to get the drivetrain engaged?

[Dragon Humper]

Yes, you should to avoid driveline shock and breaking something.

I have a one step, I just bounce her off of the 8400 rev limiter in the PowerFC and ride the clutch out of the hole. Best 60' was a 1.57 sec with the teeny tiny little factory 225's. With a 255/50r16 drag radial on the rear and my 245/45r17 street tires on the front (to save the front diff.) I should be in the low 1.40s next year. The drag radial will be about 1" taller than the fronts so it should work out pretty good going down the track. With the rears at about 20psi and the squat you will get from being under full power they should be only slightly smaller than the front (or even).


Jon.

[evilgtr]

Jon Im considering a tolouen blend fuel for my snow cross sled this winter, I currently run it on shell v-power (91 or 92 ?) have you had any experience with a 2 stroke engine on tolouen ? or a N/A engine on tolouene ?