Ran the car once again at the track after getting my LET v2 tune. My previous best was a 12.8 @ 108.

My best run from last night was 12.6 & 110.

2/10ths and 2 mph. Is that on par with what to expect from a tune added to pulley and intake?

Anyway I let Chris run my car for the last run of the night. I figured with his racing experience, and svelte light-weight physique (about 100lbs lighter than me!) he would get the best time. Unfortunately it turned out to be a bad run due to traction problems. However watching Chris take my car through the burnout out I noticed the back passenger tire wasn't spinning. That probably caused it to drag water to the line and in turn causing the traction problem). It got me thinking because about 1/2 of my runs I had major traction problems and wondering if it was the same phenomenon occurring.

Chris explained that if the car starts to shift side-ways the differential will cause the power to stop to the one wheel. Do you think this is the case? And if so, what can I do to ensure both tires get spinning during the burnout? Chris's directions to begin a proper burn-out were to keep the left foot on brake while feeding it throttle. Oddly I thought the brake would affect the rears but apparently it the throttle over powers the rears and allows a burn.

Any tips will greatly be appreciated. I'm going to wait until there are warmer temps and try running again with my stock summer tires (Pilot P2's). Currently I'm running *cough, cough* Eagle F1 all-season tires.

 

Find the video of Chris's burnout and copy what he does. And yes traction is always a problem on street tires. At least for me. I even see the traction control light blinking as I power down the track in second gear. (it blinks even when turned off if you start loosing traction) And my best time is 13.074. So your times are not bad and with practice you should be able to cut a few more tenths off.

Les

 

Even with tire spin you should be trapping 113 or 114 mph with the pulley and tune! I spun one time for only a 12.7 but trapped 114! When I do burnouts, I drive through the water and pull up about 10 feet past, then did my burnouts. I actually saw people burning out in the water, which is a no no. And if the track is prepped correctly, you can hook up on street tires with 36lbs in the tires like "Thumper SRT6" did, who turned a 12.1 @113 with a 1.77 60 ft!

 

amx1397 I believe is offering to get a group buy for the LSD for the rear. I started with one early on and have been happy. A full posi would be better but so would a few hooker that was std free.

Check with Jim he is biggy drag racer old dude, Enjoy Woody

 

Roll the car a lil while burning out don't keep the car in one spot....funny I can always get the passenger side lit...sometimes its the driverside that I have to roll a few inches forward to get it to light...
Adjust your mirrors so you can make sure they are lighting up and once you get it down you won't have to use them no more.

I feather the brake and throttle to get them both lighting up...if I stay in one place sometimes I can't get both too light up.

I am joining W soon with a PGrip...its been on the shelf for months....time to get it installed.

Kirk

 

no more problems with one wheel spinning without the other .
https://www.crossfireforum.org/forum...ad.php?t=30889 jim

 

Awesome advice, I'll give it a shot. Waiting till the weather warms up to run again though. Ran it twice at close to freezing temps- that had to have an affect on my sub-par times (for my mods)...at least I hope.

 

Don't wait for warmer weather!

The cold air gives you a great dense air charge......take advantage of it!

 

Stay out of the water.

 

There's a difference between a cool night and a freezing night- often times when it's freezing out track temps are low, thus traction is too.

 

No way around it at Atco Raceway (NJ). Besides a burnout is still needed.

 

My first time to the track after I got my LET tune, I saw about the same gains as you.
Here is my post about it: https://www.crossfireforum.org/forum...6&postcount=32

Since then, I've made multiple 12.3 runs a couple of 12.1 runs, with a peak trap speed of 113MPH. What I've found is that it's all about traction and launch technique. If the track is prepped really well, you can stage at 1600RPM or more and floor it when the green light comes on. This method has given me 60' times between 1.7x and 1.8x. I used to stage at a max of 1500RPM and roll into the throttle. That technique got me the times in the post I linked to and usually gives me, at best, a 1.9x 60'.

As for the burnout, I don't seem to have any issues getting both tires to spin, as I end up with rubber on the rear quarter panels on both sides. I always go around the water(I see that you can't at Atco), apply the brake, then give her gas. I usually stay in 1st gear for about 3-4 seconds at around 4000RPM or so then shift into 2nd and slowly let my foot off the brake to finish off with a "rolling burnout".


Try not to be too discouraged. After I got my tune, I thought I'd be running 12.2's and couldn't figure out why I couldn't. I thought that either I just had a weaker car than other people or that my after market wheels were much heavier than stock. I still don't know what me wheels weigh (and I STILL haven't run any 12.2s ), but my post on dragtimes shows that I had nothing to worry about.

Keep practicing and pray for good track prep!

 

You're absolutely right....wait for a good hot day so you can get good traction with the all-season tires.

You'll get great grip on a hot day with those tires, especially when you're down on horsepower.

Don't even know why I posted...I know nothing about drag racing.....never done it a day in my life.

 

I've never been to a drag strip that you couldn't drive around the water area. But then I've never been to Atco.
Are you telling me you can't get your tires to spin unless they're wet?

 

The reason you can't is because there is a wall on both sides right as you enter the burnout box and there is no way to get past the wall without going through the water. I don't mind it because I use the water.

 

For the life of me I can't fathom how/why you would take my comment about the temp as offensive?!?! I was simply stating that cool weather 50-60 would be better than 32-38. I'm well aware of the effect cold air has on oxygen density- however there is a point where the cold affects it's advantage by way of loss of traction. Speaking of which I just saw this today: http://www.youtube.com/watch?v=r3VHl...layer_embedded