Last Stock 1/4 miles Runs
 

I decided to go back to the track one last time before I start modding to see if I could get better than my 12.80. Unfortunately I didn't but I did get a few 110 mph traps. The DA was -990 and it should be lower the next few weeks. Here's my fastest times.

Are you running drag radials? Those 60' times seem pretty low for stock street tires.


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Thats fast for stock, how are you pulling those 60'? What tires?

I just ran a 12.8 but thats after mods and making 304/245 at wheels. Then again, it was my first run and I'm an amateur at 1/4 mile still...

I'd love to hear some tips/tricks from you! :iagree:

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I have quite a few modifications and am almost 50hp up on stock but cant trap at 110 and dont have 287rwhp either :(

I'm on stock street tires. It took me a while to figure out the best way to hook. I had to do a burnout rather than avoiding the water box like I was doing before and my 60' instantly got better.

You should post your slip. I'm still on street tires. Also weather conditions play a big part in times too.

Where do you live? If you're in higher elevation it may explain your numbers.

Higher elevations actually hurt your numbers... You will get better time closer to sea level due to air density.

I know that's why he might not be trapping 110. My track elevation is like 42.

My track elevation is 45msl or thereabouts. My 60fts are lousy 2.10 or so but trap speeds arent as impacted by the 60ft ime

I'm actually a couple of mph up at the 1/8 as well , is your track downhill ??;)

http://i80.photobucket.com/albums/j1...pssgb3q43d.jpg

What street tires are you using? I do burnouts before every run and no way my 60' drops under 1.9xx. A stock 370z doesn't have that kind of power. (Mine ran 263whp on mustang dyno). And you are constantly trapping 110? That's mustang 5.0 hp range. Are you using race fuel?
I am still waiting for pic proof of the engine bay or video lol


I suppose you have 7at?

Mine does it under 2...lol- He's got his **** together!

If it was downhill I'd be trapping like 120 LOL. I really think it's just the weather. The colder it gets here the higher I trap.

I took pics of the car at the track just for you lol but it wont let me upload them for some reason. I'm going to try Photobucket. The tires are stock I'll check to see exactly what they are. I had less than a 1/4 tank of premium gas in the car. Yes the car is a 71at.

http://i5.photobucket.com/albums/y18...ps3nmou0vk.jpg
http://i5.photobucket.com/albums/y18...psa2nalb8d.jpg
http://i5.photobucket.com/albums/y18...pspnacgavr.jpg
http://i5.photobucket.com/albums/y18...psz8ebckxd.jpg
http://i5.photobucket.com/albums/y18...pshlpyyohy.jpg

This track yes ? Skip to 1.44 looks pretty downhill to me . Might explain it as my local track rises 6.5 ft start to finish. Must be some reason you are pulling more mph in the second 1/8th

https://www.youtube.com/watch?v=Dj0xx-chzEs

I've trapped 110 at another local track. I'm sure both aren't downhill lol.

I trapped 115mph running 12.8

You should be at least around 110 doing a 12.8, otherwise you're not running a 12.8

My 60' was 1.9 on those runs, stock OEM sport tires with 5k miles on em. I did warm em up and do few burnouts.

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Trap speed has nothing to do with time! Lol


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:confused:

Well, I wouldn't say nothing....I mean, it varies, especially between different cars. But if you compare between Z's trap speed could be a rough indication of power.

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:confused::confused:

I want to run my car at this track. Should go 10s! Lol

With 600+ hp you should be able to run 10's uphill lol.

the track isn't downhill.

all tracks I've been to have a rise at the end to promote braking/slowing of the cars

looks like I need to go back down to Maryland because there's no way 35~ less hp and stock rubber beat my best time.

Yeah man this is the best time to go. I'm hoping they don't close the tracks early this year so I can go modded.

Boost and 1/4 mile is hard!! I get major bog due to the fact that I can't ride and feather the clutch or smoke the tires so I always get a poop launch. The end 1/2 way down the track is where i start to grip and recover some lost time.

Trust me, you are doing really good in the 1/4 mile. Like I said, you will beat me most of the time.

Street tires, + hard to ride clutch + lots of hp/tq = hard to run from the dig.

my best to date with around 55passes at the 1/4 and 30 at the 1/8 mile.

(photobucket is acting stupid and not letting me link it)
R/T... .329
60'....2.219
330...5.855
1/8...8.677
ET... 12.997

MPH 116.72

My fasted trap speed to date was 124 in the 1/4 mile. That was a 13.2xx second run. I have no doubt the 370 can get good times if I can trap that high. A good launch to get up to speeds fast will = good times. I jest need to get rid of the dumb wheel hop and buy me a RJM pedal in hope of being like the OP cuz he is doing something if not everything right off the line.

YzGyz

I just want to come down, set a sub-12.80, and go to the bar with my family down there.

:tiphat:

Sounds like it's time to ditch those street tires and get you some slicks. With some practice you should be able to pull some 1.6 60's. You'd be running high to mid 11's easy.

Curious, whats your best time?

And what are your whp/tq numbers? Also whats the weight of your Z?

Btw, I'm a complete amateur at 1/4 still, but I think my 60' are quite good and I was happy with my ET for 1st try. I found best way to launch my Z is to feather clutch at top and come on progressively on the gas. Launching from higher RPM or dumping clutch always made my car bog.

The stock sport rubber actually surprised me with grip ability, it hooked up well even when dumping clutch at 4k and would make the car bog.

I know my Z can run faster, considering I can now shift at 7700 and power maxes out between 7200-7500rpm. I shifted at 7500 for my last runs. So I really want to go again.

304whp/245tq and 3250lbs with 7700 redline should be able to get 12.5 fairly easy - that's my next goal for the track.

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Sure looks downhill in the video, the tracks over here are slightly uphill as they are ex-WW2 runways, they usually slope downhill in the shutdown so the opposite really.

They are great times for sure, just trying to understand why a stock car can pick up 25-26mph in the second half of the track when my car can only manage 20-22mph. But a google search (high trap speed captitol raceway ) found other drivers having high terminal speeds also

If you look at the drag times tables those terminal speeds are very high compared to everyone else , cant help thinking it must be environmental , or perhaps the air is just really good

if you want 12.5 better get drag radials/slicks and go on the best weather you can find. also upgrade diff, flatten out suspension, etc...

I've seen people's stock time be their best times based on adding power but no other upgrades mostly with base model open diffs being a major killer.

my best is 12.89 @ 111 with a 1.95 60' on oem size Michelin PSS tires.

car was full weight (with all packages, nav, and bose) aside from exhaust weight savings and full tank of gas.

my redline is 7900 but I shift before that. our car stops making power around 7200 typically so no reason to go above it. plus at 8000 or more without a dry sump it'll damage the engine or maybe go boom.

it's all based on the DA (density altitude) and Maryland tracks are good places for good times/traps. well DA and track conditions, track prep, etc.. but the air/weather are big factors

capitol is only 40-45 ft above sea level so that track with good cool air will run good.

same with MIR in Maryland is only 80ft above and I know GT-R guys by me go down there to set PB's

Granted but if it was all DA then it would run just as good on the first 1/8th ?

ehhh idk. our cars make all the power up high in the revs.

let me find my slip and see what the 1/8 vs 1/4 was.

Found it

http://images.tapatalk-cdn.com/15/11...3cc99905b7.jpg

Is that stock ?

no.

intakes/exhaust/tune with Michelin PSS's in stock sizes all the same stuff I said earlier was describing when I made that run.

110mph terminal so kinda my point

I don't remember what the weather that day was to know if the DA was better or worse.

also now I really would need to tear down my car to clean everything engine wise to make sure i'm still flowing the same as I did at 20k miles when I made that run. I could only imagine my throttle bodies need cleaned badly at this point.