HFC + Exhaust + Intake = 12's?

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.

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, 10:16 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,

ianthegreat · 06-08-2009, 06:15 PM

Quote:

Originally Posted by Phimosis

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).

The top 335i's on dragtimes have all set the records at Famoso. Someday I'm going to make it out there, maybe fly out for a weekend. But I understand what you're saying.

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.

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.

t-ray · 07-15-2009, 09:38 AM

101mph, nearly 102mph, is a healthy trap at that DA. However I would have hoped for a tad more with your mods.

I trap nearly the same(100 to 101mph) in similar conditions in my sedan, which puts down ~265whp.

Z eliminator · 07-17-2009, 06:03 PM

MY 7 AT sport ran a 13.201 with stillen intake and 4.08 gears. I hit the rev limiter in 4th and missed 5th.
RWHP 286.
0 to 60 using 1/8th mile time and trap = 4.41 seconds with a 2.09 60 ft time on 19 inch tires.
I would say when I install the headers, cats, exhaust and a Cob tune it will go 12.7 to 12.6. bo problems. The problem is the rear tires.
I have to get a different valve stem for my formula 5's so that they clear the calipers on these rims. I have toyo tires 275/35 19 that i run ay 23 to 25 lbs and i get 1.89, 60 ft times on my 5 AT 350 stillen Z.

370Zilla · 07-17-2009, 08:45 PM

How do you miss 5th in an auto? Is the 370z auto tranny different than others? I know on my EvoX I could bang the limiter, but not miss a gear?

Z eliminator · 07-17-2009, 09:33 PM

I had it in MM and i shifted to late. It hit the limiter at 7500.

06-04-2009, 10:40 PM	#5 (permalink)
ZforMe Base Member Join Date: Jan 2009 Location: Memphis TN Posts: 238 Drives: 370Z Sport Auto PG Rep Power: 18	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.

06-03-2009, 10:58 AM	#8 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3596	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	#10 (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: 221	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

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06-03-2009, 10:45 AM	#7 (permalink)
ianthegreat Base Member Join Date: Mar 2009 Location: TEXAS Posts: 171 Drives: 08 335i, 86 Ranger Rep Power: 18	To run those times you all are throwing around you must be some pretty good drivers -- or yappin.

06-03-2009, 03:23 PM	#9 (permalink)
KingDavid Base Member Join Date: Mar 2009 Location: Miami Posts: 176 Drives: A car Rep Power: 18	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	#11 (permalink)
rreign A True Z Fanatic Join Date: Apr 2009 Location: South Carolina Age: 42 Posts: 2,341 Drives: 03 Evo 8 Rep Power: 711	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.

07-15-2009, 09:38 AM	#12 (permalink)
t-ray Base Member Join Date: Apr 2009 Location: bham al Posts: 91 Drives: 05 g sedan 6mt Rep Power: 18	101mph, nearly 102mph, is a healthy trap at that DA. However I would have hoped for a tad more with your mods. I trap nearly the same(100 to 101mph) in similar conditions in my sedan, which puts down ~265whp.

07-17-2009, 06:03 PM	#13 (permalink)
Z eliminator A True Z Fanatic Join Date: Jul 2009 Location: Ontario Canada Posts: 1,660 Drives: 370 Z 7AT Sports Rep Power: 21	MY 7 AT sport ran a 13.201 with stillen intake and 4.08 gears. I hit the rev limiter in 4th and missed 5th. RWHP 286. 0 to 60 using 1/8th mile time and trap = 4.41 seconds with a 2.09 60 ft time on 19 inch tires. I would say when I install the headers, cats, exhaust and a Cob tune it will go 12.7 to 12.6. bo problems. The problem is the rear tires. I have to get a different valve stem for my formula 5's so that they clear the calipers on these rims. I have toyo tires 275/35 19 that i run ay 23 to 25 lbs and i get 1.89, 60 ft times on my 5 AT 350 stillen Z.

07-17-2009, 08:45 PM	#14 (permalink)
370Zilla Base Member Join Date: Jul 2009 Location: Gainesville, Fl Posts: 41 Drives: 370Z Rep Power: 18	How do you miss 5th in an auto? Is the 370z auto tranny different than others? I know on my EvoX I could bang the limiter, but not miss a gear?

07-17-2009, 09:33 PM	#15 (permalink)
Z eliminator A True Z Fanatic Join Date: Jul 2009 Location: Ontario Canada Posts: 1,660 Drives: 370 Z 7AT Sports Rep Power: 21	I had it in MM and i shifted to late. It hit the limiter at 7500.