i have never used dr's before but my brother gave me his m/t sportsman pro's(26x9.5), and im going to the track in 2 weeks. how do i launch it, and what about a proper burnout? these things are going on some salad shooters that i have out in my back yard.

 

do a little burnout.. most have told me 5 sec of smoke... then stage up.. I would go around the burnout box then back in, pull forward a little then start...


good luck!

 

I have had drag radials on my A4 for sometime now.....found it to be a good mod....although i got a convertor upgrade not a lot but more than stock stall.......when my tires were new i didn't see much gain until they got broken in....2 tenths in 60 ft time ..when new i didn't go into the water box because the tred still held some water......lowered the psi.....left at 2000 rpm.......felt good but had wheel hop....got that fixed with better suspension.....after really broken in heated them up pretty good and left the same......

 

How to launch on sticky tires....... Well this has worked for me- If you're on the stock converter, bring the revs to about 1200-1300, when the last yellow comes on quickly let off the brake and try to kick a whole in the floor with your right foot!!

Edit: quick burnout, don't get the tires too hot though. Do not go through the waterbox.

 

i have stock stall,suspension,full weight, and the tires are broken in already. so basically just:

-stage at 1k-1.3k rpm's and floor it
-(burnout) just get some smoke then stage?
-shoud i do a pre-launch before i go to stage?

what should i set the psi at, and more or less what 60ft/et should i expect? thanks

 

On an auto with stock stall and sticky tires I would suggest not stalling.. Instead flash... Flashing will raise your stall speed to a higher one instantly.. This technique is done by holding the brake.. When the last yellow is on, remove your left foot from the brake and plant the right one firmly.. Since you have tire, you should have traction which will result if you heaving forward quickly.. The mashing of the gas instantly spins up the converter quickly and the result is a higher instant stall... This worked well for me on my LT1 with A4 and was bringing me to 1.9 60ft times on street tires.. I think since the tires are new to you, you should be looking for 1.9 or better 60ft times.. As for suspension, on my LT1 I had LCA, Panhard, Energy Suspension torque arm bushing, and Airlift airbag in right rear spring set at 21psi.

Once you do a light smoke on the tires, you shouldnt need to do a dry hop (prestage?).

What psi? hmmm, it varies from person to person.. I think many say 18-22 with some going lower.. at 100+ mph, I just dont feel comfy with less.

Good luck.. let us know how you do!

 

Unless I missed something Sportsman Pros are not Drag Radials...each require their own burn out technique and launch style....I'm not trying to be an a-- hole, they are just two different animals...

The Sportsmans are a bias ply tire which can use less air and more heat...In general DRs don't like pressures below 15 psi and dont respond to John Force burnouts...

You'll have to experiment with tire pressures (I would start at 16psi and go down from there)and length of burnout...DO NOT DRY HOP after your burn out, this defeats the purpose of the burnout and cools the tires. With a stock converter you may want to leave off idle, "flashing" the converter at first and then experiment with bringing up the rpms until you spin, then just back off a little on the next run...Again, you'll have to experiment with tire pressures and launch rpms...Its good to have a spotter, and video, too, to watch and review your launch and tell you if you're spinning or not (sometimes its hard to tell yourself, adrenaline, etc...)...If all the planets are aligned you should see sub 2.0 60's To pull it all together you should do welded SFCs, lower control arms, torque arm, etc......Good luck...
--Alan

 

thanks guys for all the info i'll make sure and keep you guys posted on the results next week. only other question i have is, can my rear end handle this stress from the tires? will removing the swaybar help my 60ft?also just as a precaution should i inspect/change fliud in the rear-end?