I went to the track on 06/03/04. Since this is the closest track to home (~20 min away) and a good friend of mine always brings his roll-back with him to the track, i figured this would be the safest place to hit the track should anything major happen to my car (ahhhhhhhh the joys of owning a 3rd gen RX-7). Anyways, i arrive and the track is not busy at all. The staging lanes have minimal cars in them and fresh off the highway i make a pass:
60' = 2.01 (original tires from 1993 with 45kmi on them!! LOL!)
330 = 5.60
660 ET = 8.58
MPH = 83.999 (couldn't get their just 1/1000 sooner)

This was with ~32psi in my factory rear tires and the car fresh off the highway.

2nd run takes place approximately 2-3 minutes after my first run. Result? Heatsoaked intercooler = bad times. For some reason, i spun a bit more coming out, then wheelhopped as my tires finally started to bite down. My 60' was nearly identical to my first run and this is what i wind up with:
60' = 2.07
330 = 5.70
660 ET = 8.70
MPH = 82.043

The effects of heatsoak are easy to see here. So i immediately park the car, open the hood and let the fans run to help cool the engine.
~30-35 minutes later i'm satisfied with the engine bay temps and drop the rear tire pressure down to 23psi and get ready to make another pass. At this point i'm wandering around the staging lanes talking with all the racers (no, not ricers). I spot a guy with a beautiful 69 Camaro thats built, introduce myself and ask him if he notices his 60 footers are going away. He says yes. I talk with another 3 or 4 people, all confirming the same thing: The track surface is going away. So i head out to make my 3rd pass. Hoping that i would find some extra traction by dropping the tire pressure down a little bit, i decide to bring my revs up from 4000 to 4500 (peak torque for stock RX-7), hoping that if i could get the tires to bite and ride it on the peak torque out of the hole, then i might nail my 1.9X short time and 8.4X ET i was looking for. The track had other plans. I spun BADLY coming out, then wheelhopped and i let up on the gas for fear of breaking something expensive. Here is the result:
60' = 2.100
330 = 5.74
660 ET = 8.747
MPH = 82.989

At this point i was frustrated and decided that i would ride the clutch out just a tad bit longer this time and launch around 4300rpms. I swing back into the staging lanes knowing i'd be waiting for a little bit and pop open the hood.
Someone on a Hyabusa makes a pass, rides a wheelie to the 330 mark, then decides to step off the bike at well over 90mph. The next hour is spent picking up pieces of the bike, fluids and rider. Finally the track gets clear, and a fellow who owns a *automatic* LS1 Fbody (with 3200 stall )that i had chatted with in the staging lanes comes over. He tells me he just got done making another pass (his first two passes resulted in 2.1 60 footers) and he nailed a 1.90 short time. He tells me they worked on the launch pad a little bit and theres some more bite there. I get excited hoping i can nail a low 1.9 short time, possibly a high 1.8 which would put me right into the 8.40s that i was looking for.

Next up a 78-79 Camaro and older Mustang go out and run. The Camaro gets loose, decides to change lanes from right to left, back to right, kiss the right wall and then kiss the left wall at almost a 90 deg angle at over 80mph. The result is absolute carnage. Women screaming, people running, ambulances rushing. So i just got in my car, backed out of the staging lanes and went home. The last pass was not meant to be i guess :( If i can kiss a 8.4X in the 1/8th then i think i'd be DAMN close to running 12s. All this in my stock RX-7 :)

thats pretty sweet. my best run is always right after i finish my drive to the track. after another 5 passes i can let it sit 5 hours with ice all over the engine and doesnt do any better usually.

uh...

uh...

Chris, whats up? You sound like you've got something on your mind? Or did you have a brain fart? :wiggle:

thats just really fast for a stock fd

thats just really fast for a stock fd

Tell me about it. It went 8.70s before when i was running 13.5s@105mph but of course it wasn't running 100% before. I had several nipples broken on two of my solenoids before. Power would drop off on the secondary in 2nd and a little in 3rd gear. I honestly have no idea how the stock sequential twin turbos even worked when i found the two bad solenoids :dunno:

Now that i have replaced the vac hoses and those two bad solenoids, i knew the power difference was night and day different but i didn't know it would be THAT different. I'm extremely happy to say the least. :)

12s are just a DR or slick away.

And to think a "stock" 5.0 beat me... :rofl:

well thats pretty quick, definitely faster than a stock mustang and it more or less confirms what sort of condition my twins were in

8.7's isnt that fast for a stock fd...typical ET i think...

Mark
95SE

8.58 <-

stangs r slo. i dont get y so many people hate them.

Well the 8.70's was the result of 1) a back to back run where i was heatsoaked to high hell and 2)a poor launch on my part while i was experimenting with different launch techniques.

Now that i know what i have to do to get good launches out of the car now, i expect i may be able to get down into the high 8.40s. It will definetly rely on a 1.9 short time to get me there. If i can bust a 1.9 on my 11 year old, hard-as-a-rock tires i will straight up pass out :D (and some of the haters may as well).

Also, 91LX i don't dislike Mustangs at all. But is sure seems like some of the owners themselves are giving Mustangs a bad name. Alot of the Stang drivers around here will rev at nearly everything. They drive them like they have something to prove and that, i think, is what everyone makes fun of them about. :)

8.7's isnt that fast for a stock fd...typical ET i think...

Mark
95SE

Actually, 8.7's are not typical for a stock FD. Have a look here:

http://www.rx7club.com/forum/showthread.php?s=&threadid=229715

That is a time slips only thread on RX7club.com. Some of the guys on there that are running 8.70s have Apexi intakes, catbacks, dps, etc.

The RX-7 is not the easiest car to launch which is why you see so many drivers run high 13s to low 14s stock, etc. The secret to my technique is no secret. It comes from years of owning fast cars and knowing how to squeeze the very best from them. The problem with the FD is that while it has a 4.10 rear end, the individual gears themselves are spaced quite far apart. What this means is that if you can't get a quick shift off, the rpms fall extremely far down. This really hurts your ET and most of all, your MPH. Nearly all the cars i got paired up with at Moorseville either beat me out of the hole or were nearly dead even with me(lightly modded LT1, LS1 Fbodies, etc). But as soon as i rip off the 1-2 shift, the RX-7 would just squat and instantly put 3/4 of a car on them right there. Another 3 seconds and i'd rip off the 2-3 shift and thats when i would continue to walk them. If you can shift like the dickens and know how to ride the hell out of a clutch, then you can score great times out of a FD. :)

riding the clutch out of the hole is the key

Yup. For my runs at Moorseville, i would ride the clutch for about the first 30 feet then let go completely and go WOT. It's been quite awhile since i've last been on a track (probably over a year) and the grip between street and strip is so different that it takes a little bit to get used to the traction at the strip. I won't be heading back to the track for awhile as i have to move to another apartment soon and the moving process will take a little while ( i have too much stuff ) but once i'm settled in and get atleast a Koyo or PWR aftermarket radiator to combat the nasty heat then i'll head back to the track. I'd also like to get water injection as well to bring my intake temps down. This way i won't have as much a problem with heat soak as i do right now, and with the Water Injection i might be able to get away with back to back passes. As it stands right now, my car being all stock the stock cooling system is minimal at best. I was astonished to find that i had nearly an identical 60 foot on my second run versus my first run, yet the car was almost 2 tenths and 2mph slower due to heatsoak. :( Consistency is what i'm looking for.