Hey fellas I'm going to head out to the track again on Friday night and see

if I can get a better time than what I did 2 weeks ago with just 1 tire

grabin. Do any of you guys lower the tire pressure to get better traction?

Also any tips on what to do? This will only be my second time running so

not much experience at it. Any tips are greatly appreciated!

 

With my Lightning, before I had ET Streets and had to run my street tires, I just did a quick "scrub off" spin to warm them a tad and scrape any larger pebbles off. Stay out of the water box unless you have ET Streets or slicks.

If you do have slicks or a good drag tire, use the water box and get 'em wet. Unless you have skinny's on the front, go around the water box, back in, and then roll forward out of the water box, and heat 'em up good. Don't be afraid to stay on it and heat 'em up. They need the heat to get good and sticky. If you have skinny's on, you can roll through the water box.

Do you have a line lock? If not, as you roll forward out of the water box (with slicks, of course), ride your brakes with your left foot and just as you stop, with your weight transfer still going forward, push on the accelerator to break the rear tires free. This will help be a tad easier on the rear brakes as you hold your truck in place while doing your burnout.

If you have a 4x4, after you trip the second staging light, brake stand and spool up your turbo as much as your torque converter allows, letting go of the brake and mashing the go-pedal when you get the green.

Most guys will take off when the last yellow lights up, but you'll need to find your sweet spot for launching in order to get your reaction time down.

If reaction time doesn't interest you, then disregard the last.

Street tires, drag radials, ET Street, or slicks, you'll want to air them down as much as you safely can, while still keeping the tires from spinning on the rim at launch.

Stewart

 

Thanks Stewart. I just have stock size tires and no line lock. I usually run my tires at 80

psi for towing. What should I air them down to?

 

Put them down to 50 or so, put it in 4wd, let the trans do the work. On the way there do a few test launches, power brake it as hard as you can maybe 2000-2200rpm, but only for a few seconds. Only begin powerbraking it hard in the lights when the second set comes on. Leave on the last yellow and by the time you start moving it's green.

 

I'm gonna have to defer to Kris' post ('Junkie) above because I haven't had the time to race my F250 yet, so I haven't played with tire pressures for launching with street tires.

Is your truck 4-wheel or 2-wheel?

Stewart

 

Hmmmm, I'm just going to go out there and nail it Kris.

But he is right. You need to build the boost and not fry the tranny while waiting on the launch. Too low a tire pressure = rolling resistance, too high loses traction. If you have a 4x4, just launch in that. It is that much better if you make any kind of power. If not, well.....

 

yes, 50psi. in the tires. Boost up to about 15psi if you can.

 

I dont have 4wd. I'll drop the tires down to 50 psi and see how they hook up. Thanks for

the help fellas!!

 

Well I didnt do to bad last night. I ran a 15.2, 15.4, 15.3, and 15.3 again. Thats a lot

better than the 19.6 with a burn out 1/4 of the way down the track. Finally got both

tires to hook up and it went. What times do some of you guys run? Was a 15.2 good for

a 2 wheel drive truck?

 

A 15.2 is very respectable in my book for a DIESEL Truck! I know there are guy's running alot faster, but geez, it's a freakin DIESEL WORK TRUCK! Very nice.

 

15.2 aint bad at all.

What are your mods?

Stewart

 

I just have the turbo back 4" exhaust, 6639 open air filter, and DP tunner 60tow, 80

econo, and 120 race. I just got the limited slip workin right with a fluid change and

raced it on the 120 race of course. Thanks guys.

 

Very good times. I was running 15.5 average last season. This year, almost a full second slower...to many problems with truck. Trans, and fuel.

 

trans?!?!?

 

Holy cow! 15.2 is quite good on those mods!! I need to run mine -- I also have a 2wd...