SS125

iTrader: (1)

I'm going to the track this weekend if it ever quits raining here. I've read about a lot of cars on this site that talk about their hp at 383 or 380 or 390 or 410 and their running et's of 11.12 and several under 11.5's. I've had this car dyno'd on both a mustang dyno (398 rwhp) and a dynojet (424 rwhp) and I can't get into the 11's . Now, I have not been to the track with the M/T DR's so maybe that will drop the 60' time. Previous times were on Nittos. What am I doing wrong here?

tektrans

iTrader: (23)

Post up details of your runs so we can see what's up.

SS125

iTrader: (1)

This was a group of runs at Milan Dragway:
60 ft. 1/8 ET 1/8 MPH 1/4 ET 1/4 MPH
2.073, 8.312, 89.25, 12.653, 113.06
1.982, 8.019, 90.73, 12.317, 115.74
1.999, 8.075, 90.56, 12.221, 119.16
1.954, 8.086, 90.00, 12.415, 115.08


This was a group of runs at Lapeer Dragway.
2.097, 8.451, 91.96, 12.747, 112.5
2.038, 8.292, 93.76, 12.542, 113.1
2.063, 8.204, 96.09, 12.528, 115.12

trigger1

iTrader: (28)

Try a set of actual slicks and launch the car w/ a decent amount of RPM. W/ the amount of HP you are producing I would expect the traps to be higher than the 115mph average I see. Could it possibly be your driving/shifting?

erikthegoalie

iTrader: (29)

I didn't notice what kind of clutch you had...
I take it its a 6 speed with that pro 5.0....maybe your clutch isn't getting ALL of your power to the ground, by the looks of your 60 foot times...
I am just throwing this in there because im am a bolt on car that is having trouble breaking friggin 13's...and im blaming that on my clutch...it slips bad and hurts what would otherwise be a solid 3K launch..
Just my $0.02, chime in let me know
Erik

Bitemark46

By looking at your 60ft and mph my guess is that you need to work on your launches and I bet you may not be powershifting. Slow shifts will yield lower trap speeds as you loose your momentum. What psi are you running on the nittos? Should be between 14-16psi. -Mark

SS125

iTrader: (1)

Spec Stage 3 clutch.

SS125

iTrader: (1)

Launches could be a problem. I'm old school, don't know how to granny shift. Foot on the floor at all times and yank the shifter when the light comes on. I don't think the shifting is the problem. The Nittos were at 15 lbs. But I know they were spinning coming off the line. That's why I just bought a set of the MT dr's. I'm hoping that solves that problem. But would it drop it that much?

erikthegoalie

iTrader: (29)

so if its not the clutch...its your launch...try the MT, i think you may be very happy
Erik

Bitemark46

What was your launch rpm? A stage 3 clutch (the puck designed disk right?) is a light switch type clutch. My guess is that those tires couldn't hold the rpm you wanted to leave it. Lower the rpms and make your best attempt to "slip" the clutch. Nittos can't be hit hard. But you'll like the M/T's alot better. -Mark

SS125

iTrader: (1)

I tried to launch at 3500 to 4000. I've made a few changes for sunday though, not only do I have the MT dr's, I also have a 2 step to help with the launch. When you say slip the clutch, what exactly do you mean, I've read that alot.

tektrans

iTrader: (23)

That mph should get you in the 11's easy. Your 60' is horrible. Sounds you're making the right changes, keep with it and post up on your progress.

trigger1

iTrader: (28)

Slipping the clutch, rather than sidestepping the clutch you slowly release the clutch in an effort to get the car moving without hitting the tires too hard. Back when I played around on street tires sometimes I would have to ride the **** out of the clutch to get it to sixty foot anything worth while. (Riding the **** out of the clutch, holding the clutch in a single position where the RPMS stay up but the car is moving. Not the best for the clutch.)

Demon_Speeding

iTrader: (24)

I've got the M/T DRs on my bolt on and 9" equipped M6 car. It was my first time at the track with decent tires and with all the suspension parts/rear end in. I was pulling 1.8 60' times with light showing under the front tires. If I tried to launch harder I would spin the tires.

I tried to launch off my 2 step but it hurt my short times. This is the first manual trans car I've ever ran at a track so I definitely need more seat time. If you were using the 2 step to launch then that would explain your 60' times. That's what mine looked like when I was launching off of it. Just using the throttle to bring it up to 4000-4300 and quickly releasing the clutch seemed to work the best for me.