60 ft times

[Dunkee]

I just went to the track last week and I tried everything but my 60 ft sucks ass.  Does anyone know the proper wat to launch?

[Dunkee]

I'm guessing I didn't give enough info &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/blush.gif" border="0" valign="absmiddle" alt=':blush:'>

I've got a 5 spd S14 w/ kinda shitty tires. &nbsp;I'm running 16.0 @ 85.48 MPH and I want to shave off at least .2 sec off of my 60 ft to get in to the 15's. &nbsp;Any info would be appreciated.

[Rownan]

I was at the strip a few weeks ago on badly balded Bridgestone 245/45ZR16s in back.. &nbsp;I do a lot of autocrossing so my tires were badly worn, this was my first time ever on the strip. &nbsp;Only got 2 runs in... &nbsp;First was a 15.9 @ 89 mph, horrible launch, bad wheelspin, missed 2nd gear cause my hands were all sweaty.. &nbsp;2.6s 60'. &nbsp;Smoked the chick in the civic hatch next to me though haha. &nbsp;Second run I had a friend in the car with me, again horrible launch bad wheelspin but caught 2nd pretty quick, ran a 15.3 @ 89 mph, 2.3s 60'. &nbsp;Walked the '00 Si next to me. &nbsp;The car is easily capable of a 14 second quarter just need to get some new tires.

I'm not all that into drag racing anyway, it was a cool experience but I'll stick to the road racing.

[Dunkee]

Nice mod list...new tires will definitely improve your time. &nbsp;What RPM did you launch at?

[Rownan]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Dunkee @ Oct. 01 2002,11:00)</td></tr><tr><td id="QUOTE">Nice mod list...new tires will definitely improve your time. What RPM did you launch at?</td></tr></table><span id='postcolor'>
First run I was kinda confused by what was going on, the tree started so fast I redlighted with a .480 rt so close to perfect! &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=''> &nbsp;Launched at something like 4500 with no care given to the clutch I just dropped the sucker.. &nbsp;I pretty much did a burnout through the staging light haha.

Second run I launched a little lower at like 3500 horrible rt it was somewhere around 1.1s... &nbsp;Again I didn't baby the clutch on the start and the tires were so bad that I could have dropped it at 2 grand and spun the tires... &nbsp;From there using the gas just makes it worse as you can imagine...

[xhdriver]

i got a 2.1 60ft, 13.7@103, stock worn suspension and tires (i think the worn out suspension helped, as opposed to a road race setup)

[philipwight]

2.339 60' time &nbsp;on ok radials. &nbsp;Vlsd dropping the clutch at 3000, and power out of the hole.

[Dunkee]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (philipwight @ Oct. 01 2002,10:48)</td></tr><tr><td id="QUOTE">2.339 60' time on ok radials. Vlsd dropping the clutch at 3000, and power out of the hole.</td></tr></table><span id='postcolor'>
My best time was a 2.350 but I don't remember how I did it...? &nbsp;I have the same tires as you do. &nbsp;I can't launch at anything higher than 2200 RPM though or my 60 ft will turn into 2.7 sec.

[240racer]

I went to the track before the turbo install, but with the DE. &nbsp;I got a 2.3 60ft on crappy tires with no lsd. &nbsp;I ran a 15.7@86mph.
I went to the track after the turbo and I still have the same tires, just more worn down now. &nbsp;I &nbsp;got a 2.225 60ft, but didn't finish that run. &nbsp;I ran a 2.3 with a 14.1@104mph &nbsp;I definatly need to bring that down, because I should be in the mid 13's for sure.

xhdriver - what is your engine setup? &nbsp;our MPH is similar and my ET should be down there.

[240racer]

I'm sorry I forgot to add how I launched. &nbsp;with no turbo, I kept the rpms at 4500 and let out the clutch pretty slow so the tires didn't spin. &nbsp;I keep giving it the gas it needs to stay at 4500 untill I get to full-throttle. &nbsp;the clutch isn't all the way out till I am going pretty fast, like 20. &nbsp;This is pretty hard on the clutch and probably wouldn't work on a stock clutch too many times in a row. &nbsp;for me, the DE would bog if it got below 4000, so that's why I had to keep it above that. &nbsp;you might have some other bog point, you need to find that and launch right above that. &nbsp;
with the turbo it was a whole different story, I just tried not to spin, in both first and second.

[four]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Rownan @ Oct. 01 2002,11:42)</td></tr><tr><td id="QUOTE">I was at the strip a few weeks ago on badly balded Bridgestone 245/45ZR16s in back.. &nbsp;I do a lot of autocrossing so my tires were badly worn, this was my first time ever on the strip. &nbsp;Only got 2 runs in... &nbsp;First was a 15.9 @ 89 mph, horrible launch, bad wheelspin, missed 2nd gear cause my hands were all sweaty.. &nbsp;2.6s 60'. &nbsp;Smoked the chick in the civic hatch next to me though haha. &nbsp;Second run I had a friend in the car with me, again horrible launch bad wheelspin but caught 2nd pretty quick, ran a 15.3 @ 89 mph, 2.3s 60'. &nbsp;Walked the '00 Si next to me. &nbsp;The car is easily capable of a 14 second quarter just need to get some new tires.

I'm not all that into drag racing anyway, it was a cool experience but I'll stick to the road racing.</td></tr></table><span id='postcolor'>
how did you run a 15.9 and u missed 2nd gear? &nbsp;plus it doesnt matter if u had a bad launch time, its different from you 1/4 time anyway

[240racer]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">
plus it doesnt matter if u had a bad launch time, its different from you 1/4 time anyway
</td></tr></table><span id='postcolor'>

the 60' time is part of the 1/4 time, if it is lower then the 1/4 time will be lower too. &nbsp;Some say that the improvement in a 60' time can double the improvement in a 1/4 time. &nbsp;A 2.3 60' with a 15.9 1/4 might improve to a 15.5 1/4 with only a .2 sec improvement in the 60' down to 2.1sec
does that make sense?
for me I am running 14.1, so if my 60' goes from 2.3 to 2.0, then I could be in the 13.4 range, which is where I should be as sooon as I can figure out how to get a 2.0 60'

[Evil S14]

r/t doesnt affect ur et, u could have a 23 sec rt and still run a 13.7. 60' is a good part of ur 1/4 mile et.
My best 60' was a 2.1 and a 1/4 mile et of 15.3 @ 87.7 mph
thats with only an Apex-i' N1 Dual Exhaust and WS coilovers and stock shitty tires.. and no LSD!
Last time i posted this everyone thought i was full of shit bc i got such a good e/t on a barely modified 240
heres the slip
Car 120


BTW Rowman what mods did u have when u ran a 15.3?

[Evil S14]

if you want my adviece. first dont ever do a burnout, bypass the water box completely, second when you stage and the tree lights up, launch on the last yellow light. i keep my car at about 4k rpm then dump the clutch and floor it, then i gently ease off the gas till i feel traction then hammer it again. this is the method i always use and it seems to be doing alot of good, it just takes practice... i just love drag racing

[Idriftaround]

Always go on the last yellow. &nbsp;By the time your body reacts the light is green. &nbsp;I drive a 93 convertible, (automatic) 15.9 at 89 mph and my 60 was 2.6s very close to another who was running a stick. &nbsp;Neutral drop 3 grand, Im praying to blow my auto up so I have a reason to do the auto to manual swap.

[my240likenoother]

when i did the 1/4 i droped the tire psi on my tires to 20psi when i got the the watter box i went around it, but did do a nice smoke show you want to do atleast a 4 sec. burn to warm up the tires when i was staged i held up the e-brake a little to keep the car from launching cause i have the clutch out to the point where it is just starting to grab rev it up to 3500 and when the light goes drop the brake and the clutch the same time &nbsp;i did not have any wheel spin and i didnt even chirp 2nd gear i usealy get 2nd gear on the roads like its my job but the tire psi was low and the tries where nice and hot plus there is soo much ruber on the track. my 60 was 2.0 and my 1/4 was 15.3 with no lsd

[Dunkee]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (my240likenoother @ Oct. 02 2002,10:02)</td></tr><tr><td id="QUOTE">when i did the 1/4 i droped the tire psi on my tires to 20psi when i got the the watter box i went around it, but did do a nice smoke show you want to do atleast a 4 sec. burn to warm up the tires when i was staged i held up the e-brake a little to keep the car from launching cause i have the clutch out to the point where it is just starting to grab rev it up to 3500 and when the light goes drop the brake and the clutch the same time i did not have any wheel spin and i didnt even chirp 2nd gear i usealy get 2nd gear on the roads like its my job but the tire psi was low and the tries where nice and hot plus there is soo much ruber on the track. my 60 was 2.0 and my 1/4 was 15.3 with no lsd</td></tr></table><span id='postcolor'>
You definitely got skills &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/thumbs-up.gif" border="0" valign="absmiddle" alt=':thumbsup:'> What type of tires are you running?

[Dunkee]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (240racer @ Oct. 02 2002,6:31)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">
plus it doesnt matter if u had a bad launch time, its different from you 1/4 time anyway
</td></tr></table><span id='postcolor'>

the 60' time is part of the 1/4 time, if it is lower then the 1/4 time will be lower too. Some say that the improvement in a 60' time can double the improvement in a 1/4 time. A 2.3 60' with a 15.9 1/4 might improve to a 15.5 1/4 with only a .2 sec improvement in the 60' down to 2.1sec
does that make sense?
for me I am running 14.1, so if my 60' goes from 2.3 to 2.0, then I could be in the 13.4 range, which is where I should be as sooon as I can figure out how to get a 2.0 60'</td></tr></table><span id='postcolor'>
I didn't know that...I definitely need to practice. &nbsp;This is my first time driving a manuel shift car, hopefully by next year I'll have my skills up.

[RedSuns]

2.137 60' time with 13.6 @ 104mph........just revved to 4000 a slipped the hell out of the clutch.....ZERO wheelspin off the line.....

[my240likenoother]

at the time i was running 17/40/115 marshals cheep tires they were hard as a rock but the burn that i did almost metled the tires <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/hehe.gif" border="0" valign="absmiddle" alt=':hehe:'>

[SilviaDriver]

on the street i rev to 1.5 and drop the hammer and slam the gas..and i still get wheel spin..if that happens at 1.5 i cant imagen at 3k. i need to find the best point of rpm to stage at..

any help?

[Rownan]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (Evil S14 @ Oct. 02 2002,5:41)</td></tr><tr><td id="QUOTE">BTW Rowman what mods did u have when u ran a 15.3?</td></tr></table><span id='postcolor'>
It was only a few weeks ago my modlist and pics are at www.projectaspec.com in the members section!

As I said the car is easily capable of a 14 second quarter mile just need to get some new tires and learn how to launch!

[GTR240]

what is a good 60ft time? &nbsp;just wondering cuz it seems most of you are doing 2 or 2.2. &nbsp;is a 2.4 good with street tires and pretty much stock KA24DE? &nbsp;just wondering. &nbsp;thanks

[MorganS13]

i just made my first trip up to the drag strip today and i'm a little dissapointed. &nbsp;my best out of 4 runs was a 16.3@82 with a 2.35 60' (pretty consistent 60' btw). &nbsp;i think i'm doing pretty good with reaction times (.74x when i actually pay attention) but i know that doesn't play into the E/T. &nbsp;My car is a 5-speed DOHC S13 hb with 103k miles, the only performance mods i have are a place racing intake, apexi N1 Dual and OBX short shifter. &nbsp;overall i'm pretty sure my shifting and launching were decent because i took all my opponents off the line and lost no ground durin the shifts. &nbsp;judging by my low MPH i'm thinkin its not just my launching technique. i'd like any suggestions because i think i'm going back wednesday for the last runs before the season is over. &nbsp;i'll post a video of my best run in a couple hours once my friend gets over here with his digital camera so i can get maybe more input.

p.s. - i met a really cool guy at the track with an SR coupe and he offered to sell me the hotshot headers off of his old KA for $100. &nbsp;do you guys think i should go for it? &nbsp;i was planning on not putting any more money into the KA but for $100 its making me reconsider, i'll be happy if i could get solid 15s.

[Dunkee]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (MorganS13 @ Oct. 05 2002,6:25)</td></tr><tr><td id="QUOTE">i just made my first trip up to the drag strip today and i'm a little dissapointed. my best out of 4 runs was a 16.3@82 with a 2.35 60' (pretty consistent 60' btw). i think i'm doing pretty good with reaction times (.74x when i actually pay attention) but i know that doesn't play into the E/T. My car is a 5-speed DOHC S13 hb with 103k miles, the only performance mods i have are a place racing intake, apexi N1 Dual and OBX short shifter. overall i'm pretty sure my shifting and launching were decent because i took all my opponents off the line and lost no ground durin the shifts. judging by my low MPH i'm thinkin its not just my launching technique. i'd like any suggestions because i think i'm going back wednesday for the last runs before the season is over. i'll post a video of my best run in a couple hours once my friend gets over here with his digital camera so i can get maybe more input.

p.s. - i met a really cool guy at the track with an SR coupe and he offered to sell me the hotshot headers off of his old KA for $100. do you guys think i should go for it? i was planning on not putting any more money into the KA but for $100 its making me reconsider, i'll be happy if i could get solid 15s.</td></tr></table><span id='postcolor'>
I met a guy at the track w/ a 93 S13 coupe. &nbsp;He had the same setup you had and ran a 15.4 w/ a 2.1 60 ft. (I don't remember the MPH, I think it was 89 MPH)...the coupe is lighter though. &nbsp;It may be your shift points. &nbsp;I ran a better time when I reved it up higher into 6000 RPM.

[Dunkee]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (GTR240 @ Oct. 04 2002,5:55)</td></tr><tr><td id="QUOTE">what is a good 60ft time? just wondering cuz it seems most of you are doing 2 or 2.2. is a 2.4 good with street tires and pretty much stock KA24DE? just wondering. thanks</td></tr></table><span id='postcolor'>
2.4 is not that bad but you can definitely pull off a 2.2 or 2.0 w/ the proper launch.

[MorganS13]

i just remembered the dealer teling me that i needed my fuel filter replace at the beginning of summer but i decided to do it myself and never got aroudn to it. &nbsp;how big of an impact would that make? &nbsp;i'm planning on changing it before i go back up there wednesday and i'm gonna drop my tire pressure to around 20psi (it was 25 for these runs). &nbsp;i shifted around 6100-6200 with pretty solid shifts, here is a link to some videos:
http://www.imagestation.com/album/?id=4291280519

morgan vs eclipse is my best run of the day (16.3@82), morgan vs civic is my first run ever, i slept a little at the light &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt=''> &nbsp;but i still pulled on him pretty good (16.75 vs his 17.4)
the video called scott is a guy i know with an 850+rwhp supra on stock internals, the pass in the video is 11.8@132 &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/lookaround.gif" border="0" valign="absmiddle" alt=':look:'> its a solid 10 second car once he learns how to launch it. &nbsp;there were several other people i knew up there with 12 second rx-7s that i have videos of, i'll upload them tonight

[uiuc240]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (MorganS13 @ Oct. 07 2002,09:46)</td></tr><tr><td id="QUOTE">i shifted around 6100-6200 with pretty solid shifts</td></tr></table><span id='postcolor'>
why shifting at 6100-6200? &nbsp;let me do some math to show you something. &nbsp;i'm assuming you have 195/60-15 tires for this calculation. &nbsp;if you don't, the numbers change slightly (mph goes up), but that's not a big deal.

if you shift from first at 6200 rpm, your rear tires are rolling at approximately 33 mph. &nbsp;when you shift into second, that same tire speed equates to only about 3600 rpm.

i realize that your momentum (acceleration) will cause you to be traveling FASTER than 33 mph when you engage second gear. &nbsp;so let's say for the sake of argument, that you're now going 38 mph. &nbsp;that still only puts you at about 4100 rpm when you grab second.

the hp peak on the 240 is at 5600 and torque is at 4400, right?

so now let's say you shift at 6500 rpm.

that puts you at 35 mph when you start the shift. &nbsp;then add that same 5 mph. &nbsp;now you're at 40. &nbsp;40 is good for just under 4400 rpm in second.

so in my opinion, you should be shifting from first to second at 6500 rpm.

in the same fashion, the 2-3 shift should occur at:

about 6100 rpm. &nbsp;that's ~56 mph, and after you grab 3 and engage the clutch, you might be at 59 mph, which would put you *just* under 4400 rpm.

i realize this isn't exactly scientific. &nbsp;for instance, we should really be looking at the rate of acceleration and the mass of your car to find out how much more speed you'll be gaining between the shifts.

but this is a good starting point.

cliff's notes:

1-2 shift is better at 6500 rpm
2-3 shift is good at 6100 rpm
3-4 shift should be at about 5800 rpm (but if you're drag racing in a KA24DE without a turbo, you should just leave it in 3rd and go the distance, IMHO)

that was a fun post....

Eric

[saukrates]

my 60' was 2.431! i ran 15.7 at 88.13 mph with a stock engine! only a universal a'pexi exhaust! i took off at 2500 rpm! &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=''>

[Dunkee]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (saukrates @ Oct. 07 2002,11:32)</td></tr><tr><td id="QUOTE">my 60' was 2.431! i ran 15.7 at 88.13 mph with a stock engine! only a universal a'pexi exhaust! i took off at 2500 rpm! <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=''></td></tr></table><span id='postcolor'>
What model 240sx do you have? &nbsp;Some guy at the track w/ a coupe S13 told me he ran a 15.0 stock in 40 degree weather. &nbsp;He was running 15.4 in 70 degree weather.