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Discussion Starter #1
Here is a compilation of all the 'results' from the Oz memebrs that went to the 400m strip. If I missed anyone, then just let me know, or just post the results here.

KY350 (manual - stock):
-14.070 @161.23 (60' = 2.189)

4WSboy aka Datsunman (manual + hi-tech exhaust):
- 14.449 @ 155.56kph (60' = 2.221)
- 14.433 @ 155.82kph (60' = 2.244)
- 14.388 @ 154.56kph(60' = 2.12)
- 14.327 @ 154.15kph (60' = 2.161)

Notes:
- I was a bit more easy off the clutch at about 2500 rpm.. Slight spin into 2nd at 6100 rpm.
- 6100 to 6200 change each time, 25lb in rear 35 in front.

Scathing (manual + Hi-tech exhaust + Azenis RT215 tyres):
- 14.005 @ 159.84kph (60' = 2.042)

ypwpat (manual + Ti exhaust):
- 14.334 @ 160.0kph (60' = 2.312)

Notes:
- Looks like lot's of people on the Forum in USA. Recommend you to Ride the Clutch instead of Dropping it.

ZZZ-35 (manual + APS exhaust + Unichip):
- 14.4?? @ ???kph (60' = ???)

Notes:
- My best run was my first one 14.4 and with 36psi in the rear's go figure, I drop the pressure down to 22psi and got slower the harder I tried my slowest run was 14.8.

DavidM (manual + hi-tech exhaust):
I had 7 runs, with the last being my best and this is how my runs went:
- run #1 = 14.288 @ 159.5kph (60' = 2.336)
- run #2 = 14.266 @ 159.1kph (60' = 2.279)
- run #3 = 14.105 @ 159.6kph (60' = 2.226)
- run #4 = 14.224 @ 159.1kph (60' = 2.263)
- run #5 = 14.253 @ 159.5kph (60' = 2.291)
- run #6 = 14.161 @ 160.4kph (60' = 2.325)
- run #7 = 14.071 @ 160.3kph (60' = 2.222)

Notes:
- I tried launches with lots of revs, little revs and almost anything in between ... my last run was launched from around 3000rpm and then I modulated the throttle unitill the tyres stopped spinning (which was at around 30kph). I even did a burn-out for most of the runs, but I don't think it was good enough as I was not seeing much difference in times.
- I was running about 28psi (cold) in my tyres.

Lionking (auto, stock):
Four fastest runs:
- 13.816 @ 162.2kph (60' = 2.095)
- 13.850 @ 163.8kph (60' = 2.120)
- 13.867 @ 163.9kph (60' = 2.114)
- 13.914 @ 159.3kph (60' = 2.059) - fully automatic mode

Notes:
- I was getting some awesome launches. Out of 9 or 10 runs - did so many I lost track - and a couple of slips, 60-70% were near perfect launches. The auto was making this very easy compared to the manual guys. They were struggling to get traction. I just powered up with the brakes on and dumped the brake on the yellow. The traction on the start was just right for my car.
- What rpm where you launcjing at? Not sure exactly but it is around 2,200 - 2,500 I think.
- I was tryin to hold the gears to 7000. These were my fastest runs. It's quite tricky on the auto though because if you nip the limiter the car will "hang" there for a second or two before shifting.
- I was running 25psi cold in the tyres.

Lexoi (Manual, stock, 35th Anniv):
- 14.4sec @ 158kph (60' = 2.51)

Notes:
- Launched somewhere around 3000rpm, and shifted (in 1st) at about 6000rpm.

Perth 350Z (Auto, stock):
- 14.368sec @ 156.57kph (60' = 2.287)
- 14.463sec @ 157.24kph (60' = 2.333)

Notes:
- I left it on full auto for all my runs.
 

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Discussion Starter #2
I got the info on how the 'trap speed' is measured at Calder...

Does anyone know how they work out the 'trap speed' at the end of 400m?

OK, I found out how the trap-speed is measured at the end of 400m at Calder. It is calculated from the time that it takes to cover the last 60' (ie. 18.3m).

I had a quick look at what effect this has on the trap-speed. It looks like the trap-speed is about 2kph lower than actual speed as you pass the 400m line in the Zed. If you're wondering how I got that, here's the info:
- 350Z is traveling at around 160kph at that time, and at that speed it takes about 0.4sec to cover the last 60'.
- The 'trap speed' listed is the 'average' over the last 60', which implies that the trap-speed listed is reached about 0.2sec before you cross the finish-line.
- 350Z needs about 1.5sec to accelerate from 150 to 160kph, and hence in 0.2sec it will accelerate 2kph or so.

This in a way means that on my best run, my Zed reached 160kph in ~13.8sec.
 

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KY350 (manual - stock)

-14.070 @161.23 (60' = 2.189)

Achieved at WSID on RE040's. I'll have to go and see if I can beat that time with the new tyres on.
 

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I think that Scathing has popcharger and hi-tech as well
 

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Seeing as I no longer have the Zed and won't be running it can I add my old MX-5 for comparison? 12.9 @ 174.9kph at WSID :biggrin:
 

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Go the Auto's !!!!!!

LOL
 

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Originally posted by mchapman@Oct 26 2004, 03:10 AM
Hey Matt, a friend of mine is selling his rotor and it does flat 10s! Hes done a 9.XX before but that was only once. And all that from just 400 odd horse power.

Just 400hp hey :)
 

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Discussion Starter #10
Seeing as I no longer have the Zed and won't be running it can I add my old MX-5 for comparison? 12.9 @ 174.9kph at WSID

Sure, there's no rules/restirction here. Another referrence is the XR6 (non turbo) automatic that came with us ... it run 15.3sec @ 146kph.

Just looking at that the 12.9 time, it's accompanied by an unusually low trap-speed for 12.9sec pass. Usually car's running 170 - 175kph trap-speed run low to mid 13s over 400m. Cars running in high 12s usually trap at more around 180kph. I pressume that you must have had a really good launch ... do you recall your 60' time for that run? Were you on road or sticky rubber?

KY350 (manual - stock) -14.070 @161.23 (60' = 2.189)

I've added that to the 1st post so that you're in the 'list' as well.
 

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Seriously Probably the Cheapest Option to create a Drag Machine is get a Second Hand Ute with LS1 V8 and Put on APS TT on it. That should do good 9 sec :p or even 10 sec still pretty good :)
 

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Originally posted by DavidM@Oct 26 2004, 05:51 AM
KY350 (manual - stock) -14.070 @161.23 (60' = 2.189)

I've added that to the 1st post so that you're in the 'list' as well.

Thanks DavidM - I noticed it last night and was wondering whether it was there all the time and I just missed it on first read (ie I'm going crazy) or whether you edited the info in.
Obviously the later - cheers.
 

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Originally posted by DavidM@Oct 26 2004, 05:51 AM
Just looking at that the 12.9 time, it's accompanied by an unusually low trap-speed for 12.9sec pass. Usually car's running 170 - 175kph trap-speed run low to mid 13s over 400m. Cars running in high 12s usually trap at more around 180kph. I pressume that you must have had a really good launch ... do you recall your 60' time for that run? Were you on road or sticky rubber?

Can't recall the 60' time. Biggest issue was wheelspin the entire run due to crappy little road tyres. Also with tools, spare and a full tank of fuel. I'm sure it could've done better. Just waiting for the current owner to have a run.
 

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HiTech & Popcharger & RT215's

60': 2.042
ET: 14.005
km/hr 159.84

The RT215's did more harm than good. With the extra-stiff sidewalls, its hard to get traction down (even with a burnout to get them warm). Even when I snap-changed into second, I'd get a fair amount of wheelspin on the strip.

There are 13's in the car, since that's not my highest trap speed.

I'd say that the best launch is to slip the clutch. The second best time was my last run at a 14.1, where I intentionally rode the clutch and got it away with only a sniff of wheelspin.

Strangely, its the times were I popped the clutch and smoked them up where my trap speeds exceeded 100mph :) Since the 60' times aren't the best, I must have just had good gear changes further up the strip.
 

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Originally posted by scathing@Oct 27 2004, 05:09 PM
HiTech & Popcharger & RT215's

60': 2.042
ET: 14.005
km/hr 159.84

Since the 60' times aren't the best, I must have just had good gear changes further up the strip.

That's a better 60' time than I had with the auto!!! Sounds like you've worked out how to launch. My best 60' was 2.059 with an ET of 13.914. And a 2.095 on my fastest ET 13.816.
 

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To be honest, that launch was an accident. I didn't mentally think, "I should do this" and then execute it.

I just lined up, waited for the lights to go, and then launched and got lucky.

I'd adjust the revs I'd clutch-up from, but for the most part I'd just pop the clutch and then work the throttle. Some runs I'd ease the throttle down better than others to limit the wheelspin, but it wasn't conscious.
 

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Discussion Starter #17
60': 2.042, ET: 14.005, km/hr 159.84

hmmm, I can't edit my posts anymore?! I was going to update the original post with this info, but it seems that I can't. Maybe Zuffy can?

btw, that is an awesome 60' time. I'm guessing that if I could run the same 60' time, then I'm be in 13.7s. What were your other 60' times?

I'd say that different strips have different surface/grip and hence require different launch technique, but it's still be good to hear what exactly you did.

Even when I snap-changed into second, I'd get a fair amount of wheelspin on the strip.

I get that with the RE040s. Though, I get it anywhere ... on the road, or at the strip. Though, with ther R-spec rubber I have enough grip not to get wheel-spin on gear-changes. I'm guessing that a lot of it is due to the size of the 350Z's flywheel as the revs do not drop quickly enough to rev-match on spirited up-shifts.
 

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My average 60' times were around 2.15sec or so.

Don't know if I'll run the car down the quarter again; it wasn't that interesting and I did it for a "give it a go" idea.

There's off-street drifting at Oran Park, and I'd be more likely to take my car out to that then drag again.
 

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Hi Chaps.
Was 4wsboy...(Still Steve).

Update on 400m 14.327

Bad 60' 2.161
660' 9.254
1000 12.007

Terminal 154.15

WSID

Hi Tech Cat back..still learning though.

That 14.07 is exceptional for stock KY....Whats the secret, they make your car on a Wednesday!!
 
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