Us down here in Houston went to the track yesterday. My first time out there. It was hot as he!!. I made a total of 7 runs. (could have done many many more but I didn't feel like killing my car in the heat) I did all my runs "fully loaded" meaning a little more than 1/2 tank of gas, back seat, spare, baby seat, evarything I normally have in it. I also brought along a very nice and accurate temp guage to measure air, surface, and fluid temps while there. First run I did 17.550 at 84.72. Intake air temp was 103F. Tire pressure was my normal street 40F/35R. After playing with air pressure, launch techniques, tranny pre-load rpm's I was able to bring it down to a 15.953 at 88.65 with intake air temp at 98F and front pressure at 25psi. I do have some questions. What affects trap speed? I was trapping right with or higher than 2 other max's that were there and beating me. One was a '03 6spd and the other a 4th gen. Also, I have never gotten wheel hop but I was getting it bad at the track, even after dropping my front pressure to 25psi. I found that I got better times if I pre-loaded the tranny to ~1200 instead of 2000 rpm's. I also found that I got slightly better times with O/D off even though I only hit 3rd long enough to cross the line. Why? Does anyone have any tips or suggestions? Next time I go will be in the fall and I will probably do this one "stripped".

I finally was able to race my brother-in-law's '02 SC'ed Harley truck. His best time was 14.8 at ~97mph. He got me by 10 or more car lengths... I fared better against the '03 6spd...

 

17.5 WOW!!! ive never seen that before...hehe.

O/D off is better, go with 1/4 tank of gas...you should be able to pull some consistent 15s with that.

wrong forum BTW.

 

not bad for 103 degrees! i'm hopin to hit the track this friday with my 2k2... any tips for launches? this will be my first time draggin. oh and i also raced a SC'd Harley F-150 and it was quite even, so maybe that means i'll run around a mid-high 14 that'd be cool

 

you should weather permitting and a decnet launch

 

there's no way an 03 6-speed should be trapping anywhere near 88 MPH. they should be right around 94-95 MPH if the driver is even average.

 

I might be wrong about the trap speed for the '03, but I know I trapped higher than one of them at least once. The rest were off by only about .5-.75mph. I know that the '03 had problems with wheel hop really really bad. I held him off on one run for a little more than 1/3 of the way, then he just powered on by...Zoom Zoom.

 

Yeap,you are right.I trap most of the time 94-95.5 mph.Well I also did trap a 85.66(cause I missed 3rd and shift 5th)at my 2nd or 3rd run can't remember.

 

ur trap speed is pretty good...i think i trapped at 87mph.

didn't u also trap at 89 on one of ur runs?

 

My friend made that same mistake with his 350Z (the one in my sig pic), and I beat him.

my stock 1997SE (100% stock at the time) ran a 15.8 .

 

naa...my fastest was 88.65 mph. If i trapped at 89 I might have beaten you. I still would like to know what things effect trap speeds.

 

It was kinda hot on sunday. I ran a new best in my se-r. When I ran with my street tires I had no traction whatsoever, then I got a bit of wheelhop myself. However I redeemed myself once the slicks got put on. My timeslips are here if it doesn't work just cut and paste. My previous best was 14.88 @ 90mph with a 2.20'. The slicks must be killing my top end because my 1/8 ET/trap should equal 14.4-14.5 1/4 ET.

 

very nice slips! Wish those were mine! How would slicks effect your top end?