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Oops! forgot you had a solid rear in the car. So yeah.....do what Crispeed said and you should be just fine.
That 2nd video looked like you were on one hell of a pass!! What the heck happened? Car sounds really mean and looks the part too. Man i love your car!
Stupid car was going through the tires like it was nothing. It's hard to tell from the video, I was cutting 1.70's all night long
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Lupe
If your suspension is set up right you should be able to run as low as 7 psi without any problems. You have a solid rear in there not IRS. Take advantage and drop the pressure to suit conditions. Cold track is the worst for traction especially when the sun is not out. But you said a couple of quick cars made good passes so you need to adjust to suit conditions.
As mention before soften the front shocks up and adjust the rear to get the best combination of launch and down track traction. You should have change shock settings after the first run. Also you have skinnies in the front so pump them up to 40-50 psi.
Thanks for your advise Cris.
My ET Fronts say max tire pressue 35 psi I think, should I still crank them up to 40-50 psi ?
Can I run 7psi because the car is so light? I've never heard of anyone running that low of pressure. Dan Schechter says he runs 12-15 psi and he's cutting 1.3X 60 foots so I don't understand why I'm having problem hooking up.
Should I just soften the fronts and rears all the way and see how that feels?
Dan Schechter says he runs 12-15 psi and he's cutting 1.3X 60 foots so I don't understand why I'm having problem hooking up.
how well is your 4 link tuned? i think there might be something there, because 4 links can be setup to grip very well if setup right, if not they can cause lots of gripping problems.
how well is your 4 link tuned? i think there might be something there, because 4 links can be setup to grip very well if setup right, if not they can cause lots of gripping problems.
Not sure about the pinion angle. I did just have the thrust angle setup when I had the allignment done. It's perfectly straight now.
are there any good shops around st louis that has experience with 4 links? id have someone look at who has experience with them and see what they say. with your numbers and weight you should be getting alot better than 1.9 60ft times, only othe thing i can think of that could be causing problems is the rear suspension?
My ET Fronts say max tire pressue 35 psi I think, should I still crank them up to 40-50 psi ?
Can I run 7psi because the car is so light? I've never heard of anyone running that low of pressure. Dan Schechter says he runs 12-15 psi and he's cutting 1.3X 60 foots so I don't understand why I'm having problem hooking up.
Should I just soften the fronts and rears all the way and see how that feels?
And people say drag racing is easy
Lupe
Your car has a solid rear. Dan's still running the IRS so he have to adjust to suit
although I have also ran as low as 8psi when I was still running the IRS to compensate for a bad track.
You're not taking advantage of what you have. A solid rear with 4-link.
__________________
CRISPEED Rx-7 9.204@150.47
TRAVIESO RACING Rx-3 10.04@130.86mph ALL MOTOR
AWD MOTORSPORTS 8.75@163EVO8 GSR E85
AD TURBO 2JZ S2000 8.69@163 E85
CHARLES/RAW 2JZ S2000 8.7213@157
BIG DADDY PERFORMANCE SUPRA's MKIII 8.70@170/MKIV 7.95@180
activate the 2-step so you build some boost off the line while also mitigating your boost ramp in 1st and 2nd gear. your problem is not that you make too much power off the line, it's that the power is ramping up too quickly which is causing you to blow away the tires. you'd be better served with more baseline power at the launch and less slope on your boost gain. although you'll be launching with more power, a nice stable rise in power will help you hook much better than launching with no boost and an exponential rise in power. you can control wheel speed by fine tuning the rate of boost ramp w/ your boost controller. you're basically just trying to tune your power curve to get a good balance that allows you to get up on the tire without creating excessive wheel spin. work on fine tuning your wheel speed first before you start tuning the 4-link and you'll be fine. ideally you'd want a slider clutch to control your wheel speed, but in your case you'll have to do it with boost control.
activate the 2-step so you build some boost off the line while also mitigating your boost ramp in 1st and 2nd gear. your problem is not that you make too much power off the line, it's that the power is ramping up too quickly which is causing you to blow away the tires. you'd be better served with more baseline power at the launch and less slope on your boost gain. although you'll be launching with more power, a nice stable rise in power will help you hook much better than launching with no boost and an exponential rise in power. you can control wheel speed by fine tuning the rate of boost ramp w/ your boost controller. you're basically just trying to tune your power curve to get a good balance that allows you to get up on the tire without creating excessive wheel spin. work on fine tuning your wheel speed first before you start tuning the 4-link and you'll be fine. ideally you'd want a slider clutch to control your wheel speed, but in your case you'll have to do it with boost control.
The above advice seems very good. The only other thing that I can think of is that you are loosing time on the shifts.
activate the 2-step so you build some boost off the line while also mitigating your boost ramp in 1st and 2nd gear. your problem is not that you make too much power off the line, it's that the power is ramping up too quickly which is causing you to blow away the tires. you'd be better served with more baseline power at the launch and less slope on your boost gain. although you'll be launching with more power, a nice stable rise in power will help you hook much better than launching with no boost and an exponential rise in power. you can control wheel speed by fine tuning the rate of boost ramp w/ your boost controller. you're basically just trying to tune your power curve to get a good balance that allows you to get up on the tire without creating excessive wheel spin. work on fine tuning your wheel speed first before you start tuning the 4-link and you'll be fine. ideally you'd want a slider clutch to control your wheel speed, but in your case you'll have to do it with boost control.
That would be fine and dandy if I had a electronic boost controller but I have Hallman Pro Boost Controller.
I'll try softening the shocks and lowering the tire pressure a bunch and see what that does. I might turn the 2 step on and try out a 6K pill instead of the previous 8K pill.
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