HFC + Exhaust + Intake = 12's?

ianthegreat · 06-03-2009, 10:45 AM

To run those times you all are throwing around you must be some pretty good drivers -- or yappin.

wstar · 06-03-2009, 10:58 AM

Due to other scheduling constraints, I likely won't make it back to the local 1/4 mile until June 19 (two weeks later than planned). And by then I'll probably have a few more mods going as well, so I won't even be able to tell easily how much change was me getting better vs the car

KingDavid · 06-03-2009, 03:23 PM

Internet calculator. Lol.

Someone APPARENTLY ran a 12.8(9) with a bone stock Z on DRs in the back. I read it somewhere on here. Don't know if proof was ever posted up though.

KingDavid · 06-03-2009, 03:25 PM

Quote:

Originally Posted by 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.

And I would like Phimosis to run on DRs. See what he gets. Could be interesting.

Phimosis · 06-03-2009, 03:26 PM

Quote:

Originally Posted by 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.

it's not going to break into the 12's where I live. :-(
I have been out of town, but our last "test and tune" was last Friday. If I had went there after work, the DA would have been 2860 (Famoso raceway, May 29). A 12.70 sec @ 107 mph car at a DA of 2860 corrects to 13.25 sec @ 105 mph.

The seat of the pants dyno tells me the same thing. My vette ran a 12.8, but is way faster than my 370.

To be honest, my car was "bogging" from 5,000-7,000 rpm. I thought it might be from detonation (and subsequent timing retard) because the weather was almost 100 degrees and my timing is advanced over stock. So, on an empty tank I put 5 gallons of 100 octane unleaded in it and dynoed it. The breeze was running the wrong way through the shop, helping to heat soak and keep intake air temps sky high. The ambient temp was already 98 degrees. The runs were on a dynojet. The best run? 290hp. :-( with intake, exhaust, cats, headers, remapped ecu and race gas... Only 290hp. There's just no way I'm going to get into the 12's on the track where I live.

One_Quick_Z · 06-03-2009, 03:41 PM

Thats when you take a weekend cruise and run at a diferent track!

DAN

rreign · 06-03-2009, 03:42 PM

Damn, I have been tryin to see some real times with guys who are completely bolted on. Like I said, I could care less about the stock time because let's face it, no one who actually owns the car would just leave it be, lol.

Darkaeon · 06-03-2009, 04:24 PM

Quote:

Originally Posted by 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.

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.

ianthegreat · 06-03-2009, 08:33 PM

Quote:

Originally Posted by Phimosis

it's not going to break into the 12's where I live. :-(
I have been out of town, but our last "test and tune" was last Friday. If I had went there after work, the DA would have been 2860 (Famoso raceway, May 29). A 12.70 sec @ 107 mph car at a DA of 2860 corrects to 13.25 sec @ 105 mph.

The seat of the pants dyno tells me the same thing. My vette ran a 12.8, but is way faster than my 370.

To be honest, my car was "bogging" from 5,000-7,000 rpm. I thought it might be from detonation (and subsequent timing retard) because the weather was almost 100 degrees and my timing is advanced over stock. So, on an empty tank I put 5 gallons of 100 octane unleaded in it and dynoed it. The breeze was running the wrong way through the shop, helping to heat soak and keep intake air temps sky high. The ambient temp was already 98 degrees. The runs were on a dynojet. The best run? 290hp. :-( with intake, exhaust, cats, headers, remapped ecu and race gas... Only 290hp. There's just no way I'm going to get into the 12's on the track where I live.

Famoso is a great track. One of the fastest in the country some days.

Phimosis · 06-04-2009, 10:11 PM

Quote:

Originally Posted by 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.

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.

Phimosis · 06-04-2009, 10:16 PM

Quote:

Originally Posted by ianthegreat

Famoso is a great track. One of the fastest in the country some days.

When your talking NHRA, the limiting factor is traction, not power. If you have 105F ambient temps with 200F Aspalt, you get incredible traction. If you're only making 7,200 hp in that condition vs. 8,000 hp on a track with 65F asphalt, you'll pull a very low ET even though your trap speed is low. On a 332 hp car in those conditions, making 298 hp will kill your ET and trap because traction was never a (big) problem. (I used 90% of max power in both calculations).

ZforMe · 06-04-2009, 10:40 PM

Where are you getting the DA corrections? Can you check my 13.212?

Thanks,

wstar · 06-04-2009, 11:04 PM

I used this: DA Calculator - Density Altitude Calculator - DragTimes.com

Darkaeon · 06-05-2009, 10:11 AM

Quote:

Originally Posted by 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.

So now my time is considered slow because I did it in favorable weather conditions? Thats a bit of nonsense if you ask me! Also your looking up a DA of the time when I posted the splits at 8:50 at night, not when I actually made the pass which was early afternoon closer to 1-2 pm in the middle of the heat/humidity of the day. Not to jump on ya, but you don't take a good time on a good day and turn around and convert it to a slower time in less than favorable conditions. If anything it should be the other way around. I mean yes it sux, but you don't discredit someones posted times because they were fortunate to have good weather at the time of their runs. Weather conditions do make all the difference in the world, this is true, thats why we got a few HR's with 13.1 times even, but hey a timed run is a timed run is a timed run, if you were lucky to have favorable conditions on your side that day, more power to ya, sorry to those that don't tho! But don't discredit someone else's times.

wstar · 06-05-2009, 10:18 AM

The DA thing isn't about discrediting anyone. It's just a useful way to really compare numbers. Otherwise someone who lives in a bad climate for drag racing really has no way to compete or compare with anyone else.

06-03-2009, 10:58 AM	#62 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	Due to other scheduling constraints, I likely won't make it back to the local 1/4 mile until June 19 (two weeks later than planned). And by then I'll probably have a few more mods going as well, so I won't even be able to tell easily how much change was me getting better vs the car __________________ 7AT Track Car! Journal thread / Car setup details

06-03-2009, 03:41 PM	#66 (permalink)
One_Quick_Z A True Z Fanatic Join Date: May 2009 Location: Seneca Il Posts: 1,374 Drives: 10 Civic EX Sedan Rep Power: 219	Thats when you take a weekend cruise and run at a diferent track! DAN __________________ -My BRZ with exhaust will decimate all if we overnight parts from Japan- 10 Civic EX Sedan- Current Daily

06-04-2009, 10:40 PM	#72 (permalink)
ZforMe Base Member Join Date: Jan 2009 Location: Memphis TN Posts: 238 Drives: 370Z Sport Auto PG Rep Power: 16	Where are you getting the DA corrections? Can you check my 13.212? Thanks, __________________ 13.369 @ 102.73 Bone Stock. BERK HFC's installed 5/14/09 @ 1490miles, 13.212 @ 106.15. Cobb Post MAF Hoses installed 3/20/10 @ 5,043miles, future: FI exhaust with 18" res and s/s cans.

06-04-2009, 11:04 PM	#73 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	I used this: DA Calculator - Density Altitude Calculator - DragTimes.com __________________ 7AT Track Car! Journal thread / Car setup details

06-05-2009, 10:18 AM	#75 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	The DA thing isn't about discrediting anyone. It's just a useful way to really compare numbers. Otherwise someone who lives in a bad climate for drag racing really has no way to compete or compare with anyone else. __________________ 7AT Track Car! Journal thread / Car setup details

06-03-2009, 10:45 AM	#61 (permalink)
ianthegreat Base Member Join Date: Mar 2009 Location: TEXAS Posts: 171 Drives: 08 335i, 86 Ranger Rep Power: 16	To run those times you all are throwing around you must be some pretty good drivers -- or yappin.

06-03-2009, 03:23 PM	#63 (permalink)
KingDavid Base Member Join Date: Mar 2009 Location: Miami Posts: 176 Drives: A car Rep Power: 16	Internet calculator. Lol. Someone APPARENTLY ran a 12.8(9) with a bone stock Z on DRs in the back. I read it somewhere on here. Don't know if proof was ever posted up though.

06-03-2009, 03:42 PM	#67 (permalink)
rreign A True Z Fanatic Join Date: Apr 2009 Location: South Carolina Age: 40 Posts: 2,341 Drives: 03 Evo 8 Rep Power: 709	Damn, I have been tryin to see some real times with guys who are completely bolted on. Like I said, I could care less about the stock time because let's face it, no one who actually owns the car would just leave it be, lol.

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