HFC + Exhaust + Intake = 12's?

wstar

We've got a 20% chance of rain at Baytown tomorrow night too, which could really scrap things. But I think if it stays dry, it will probably go well

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Phimosis

Ugh. All these bench racers...

I don't see a 370z breaking into the 12's without some mods and a set of small diameter drag radials. My last car was a c6 vette that would just beat the piss put of my 370z and I only got it to run 12.8 on RE050A's. Show me your time slips!

In the mean time, I'm not going to spend the money to go run it because I know I would still be turning 13's. :-(

wstar

I ran twice last Friday, 7AT with the full set of bolt-on power adders, but no track prep (as in no weight removed from the car, even my giant bag of tools, and normal street tire pressures). Both runs were in the 13.4's. I was also unfamiliar with the track and a bit nervous, and short on time.

I think my launches were subpar, and my shifts were a little late just due to me being distracted by the whole experience for the first time. I'm planning to go back soon on a night where I can get the car prepped and get several runs in to learn the launch, and I expect the time to drop significantly. We'll see how it goes. I can't say for sure that 12's are possible, but they certainly seem within reach.

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bboypuertoroc

So you don't see it happening because your drag skills are sub-par?

It's the same thing people said about the HR 350Zs... "oh lawd, they won't hit low 13's... no f'n wai gai". Look what happened.

And we already got an AUTO 370Z that hit a damn 13.1. I put money on it that the 370Z will dip into the 12's with nothing more than tire pressure changes and a good driver.

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Phimosis

Hi. Nice to meet you. Could we start over without you flaming me? I'm an experienced racer. No, I'm not the fastest. If I were, I would race for a living. I live in a hot area with low humidity and track times tend to be slow (DA calculations run around 2500-3500). I objectively state the facts and make suggestions to help move this community forward. We have a lot of people speculating on how fast their 370z is. They are currently not that fast with the mods on the market, but not many people are taking their car to the track, or they are not posting their time slips for fear of being mocked. I'm simply trying to get more people to take their car to the track rather than playing arm-chair quarterback.

The fastest time I have seen posted for a 370z with no modifications is 13.36 seconds and the fastest time that I have seen for any 370z at any level of modification is 13.21 seconds from our own "ZforMe", but his DA calculation was -565, which is going to produce a very fast time.

So even with mods and very favorable track conditions, the 370z is only hitting 13.2 second quarter mile times. That is why I said I think it's going to take a set of drag radials to get into the 12's.

If you disagree, prove me wrong.

wstar

FWIW, my 13.4xx runs were at a DA of about 1500, which makes them line up better with ZforMe's results I guess. And no, I still haven't scanned the slips (I don't have a scanner here, and I haven't been by Kinko's lately, sorry).

Edit: And I do plan to get back there soon and do it right, hopefully this Friday.

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Phimosis

I went to a handy-dandy internet quarter mile et calculator to crunch some numbers.

Edmunds inside line tests this car at 3359 lbs. With a 170lb driver, that is a total of 3529 lbs. Plug that into the ET calculator with 332 flywheel hp and it says: 13.49 seconds. Pretty much in line with what car magazines have been getting.

So how much power do we need to get a 12.9 at that weight? 380hp according to our internet calculator.

Using 17% drive train loss (that whas the calculator's #, not mine) that means you would need a baseline dyno run of 284whp.

How much would we need for a 12.9 second quarter mile? 324whp. That means a 40 whp gain would get us there. Sounds reasonable. Just hasn't happened yet.

With some of these initial dyno numbers coming in under 260 hp I was worried that Nissan fudged their power output numbers... but it looks like that is not true.

Anyways, just some food for thought....

Darkaeon

Actually I posted multiple 13.2s splits with nothing more than the Stillen G3 intake on my 7AT base and this was on the track in Fayetteville, NC which is notorious for being a slow track due to it being slightly uphill and terrible 60 ft traction. I rarely ever had tire spin probs and was seeing constant 1.9 - 2.0 60 ft times.

As it stands now, I just moved back to Texas and am home visiting in Houston so I plan to try and make it out to Houston Raceway Park this friday night June 5th to see if I can lay down some better times. I would love to get some of you other houston guys out there this friday, PM me on here and maybe we can arrange a meet up out there or something.

Phimosis

On your fastest run, 4/13/09 @ 8:53 pm, the DA was 389. Your ET of 13.341 @102.889 would correct to 13.333@102.859. Convert that to a 3100 DA that we had on our last track day (5/29/09) and it would be an ET/trap speed of 13.85 seconds @ 98.9 mph, which would universally be considered slow in this forum. hot track in low humidity = slow track.

One_Quick_Z

^^^Take it easy^^^

As soon as I get My car to hit 2k miles I am going to take it to the track and I will post my times up for everyone to see...... But With what I am seeing they should be low low 13's



DAN

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Junior370z

So if I put a turbo on my rotary engine with pistons on my honda oddyssey I should be able to hit high 12's?! My oddyssey does have the GT-R emblems on it you know... Limited edition...


Sorry guys! I went there!

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KingDavid

I don't know. I/H/E and a tune has yielded numbers as high as ~345whp. If it comes stock with ~260whp and runs 13s like that, someone might be able to break 12s. But talk is cheap and so is bench racing. So I'll wait for some results. ^_^

Crash

^^ +1

Well said.

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NinosZPWR

yea man it could definatly get 12's.

rreign

I want to see Phimosis take his car to the track. According to his dyno results and the little calculator, he should be running around a 12.6xx - 12.7xx. I'd like to see what some of these guys are running that are in the 330+WHP range. I could care less about all this talk on STOCK Z's. I want to know what it is capable of in the long run, after parts.