nitrate

From TypeR -

RT .620
60 FT - 2.087
330 FT - 5.978
1/8 - 9.084 AT 78.72
1000 FT - 11.800
1/4 - 14.047 AT 99.77

Lookin for a 13.90.. About to make another pass..

JRock

OMG REALTIME RESULTS

Glad he's finally at a REAL track.

NOVAwhiteTypeS

whoo hoo!!! finally 1/4 miles instead of the shoft 1/8 go type R!!

EricL

What's the current track temp, humidity, and barometric pressure (or where are you guys -- town, state)?

mattg

how many runs has he had ? what's the temp ?

Nashua_Night_Hawk

and I would love to know:

1) The car prep.
2) weight reduction.
3) Launch Tech used.

2.0s in 60" is fast... I wonder who he was able to do it on street tires...

Loseit

iTrader: (1)

that is pretty damn awsome...real time Type R!!!

fastfour

2.0's for 60ft time is probably as good as it will get on street tires. 13.9's would be pushing it if youre at 14.0's w/ 2.0 60fts. Congrats

nitrate

Not sure where the track is that he is at but its about an hour and a half away i think.. We're in Florida -- Tampa Bay.

Shawn

darrinb

its prolly hot in the dirty south, so the temps could be hurting his time

EricL

Not bad...

Tampa FL weather data:

66-degrees F
93% Humidity (that can't help) doing pretty good with way high humidity
Baro Pressure: 29.87

Wind 5 MPH from North.

http://www.weather.com/weather/local...wa=&whatprefs=

http://www.weather.com/weather/hourbyhour/USFL0481

10% chance of rain

Zootking

congrats dude...im hoping to hit a 13.5 or better tomorrow night...I'll catch every run on video so we can post it....i hope i can pull off a 2.0' 60'

sidemarker

14.0 so far? i hope he does better cause i think that number is way too high especially with all the money put into that beast.

i would have expected at least mid 13s

sidemarker

EricL

The humidity is VERY high and don't forget, the times are being done in humid near-70 degree temps. Humidity does not help and its effect changes with temperature.

The recent 14.2x, in autos that were done by others with I/H were done in cold weather (40-50 degrees and low to medium humidity).

Mike, did the 14.2x in 70-degrees (with auto) with I/H and light wheels and tires.

Give it some time. The extra .5 second below 14 is quite a bit harder to get that the .5 second from 15...

Just a head wind in the wrong direction can really hurt (or help).

typeR

hey thanks for all the comments ...just got in...i unfortunatly was not able to better the 14.047...

ericL my temp was showing 70* and it was humid for sure even started to sprinkle...though im slightly dissapointed because i was so close i know it's just the weather, something in the high 50's and dry ,and 13.9** wont be a problem...

here's a comparo tonight vs. my best 1/8th
r/t .620 .591
60' 2.087 2.098
330' 5.978 5.889
1/8th 9.084 8.969
@ 78.72 79.35
1000 11.800

1/4 14.047
@ 99.77

to me there's no doubt my 1/8th was a 13.9** equvilant and i will go back when some better weather moves in...hopfully with some light weight wheels to boot...sidemarker mid 13's is very unrealistic

Mike

Go Steve Go Steve!!!

EricL

No doubt!

typeR

60 foot times...i think i must attribute much of my 60' success to blocking the rear springs...there are rubber spacers you can buy at an auto parts store that go between the coils essentially stiffening the rear springs to minimize rear end squat..essential, if you want to get out of the whole quickly...i lower the front pressure to 20 p.s.i and the rears to 70 ,again minimizing rear end squat, and i break torque ,becareful you can still go up in smoke so dont get all leg happy, you have to feed it throttle...on a non 3.5 maybe you can give it more ...try it out...and there's your lesson nasau ,now go launch that bicth
oh ya i run it on E no jack no spare, thats it for weight reduction...it doesnt help that i weigh 240

nvpscore

you need to move type R, LIKE NOW! :grin:

AK_MOBBER

DAMN your car is fast!. Imagine how fast it would be if you put on a supercharger and nitous!@!

Congrats on your time typer! Youll be in the 13's in no time!

SFLA_Type-S

2.0 60 foots are difficult on street tires, but very possible. I was able to pull a 2.08 on 225/40/18 tires.

SFLA_Type-S

Congratulations on your time TypeR, I was really hoping you'd hit 13's tonight. Better luck next time

o snap its eric

just keep on practing.. you'll get there

Nashua_Night_Hawk

20 PSI in front and 70 PSI in the rear ...

zeroday

nice times! put a skinny dude in there for kicks to see if you can break into the 13's...(maybe a jockey?? )

zeroday

70 psi may just ruin your tires....

jimcol711

eric, or any of you that are very technically knowledgeable, ive got a question. im not going to try to compare apples to oranges here but here goes:



my car stock did a 14.8@94....after spending 340 bucks for headers and going to the same track and under same tire/weight conditions my car was able to hit a 14.3@99....the only differences between the runs were the headers, and about 25 degrees colder temperatures for the 14.3@99 run. as far as humidity, it was low...it was a clear crisp day....now, having said that, we have a 3.5 liter car with headers, intake, etc...all the goodies...he got a best time of 14.0@99 down in florida....so that car only does 3 tenths better with major modifications than a car like mine with only headers....big factor here...WEATHER

my question is how much does the weather really effect the cars performance?? and not only that, but how is it that a car can drop 5 tenths and gain 5MPH in trap speed with just headers and 25 degrees temp difference when a car with thousands in major engine mods isnt that much faster at all? is the CL-S basically "maxed" out by the time you put headers/cai/exhaust on it that the 3.5 doesnt really add much power??

a 14 flat at 99 is a great time but i know im not alone in the hope that this guys car would be at least at a 13.9 or better....do you think that if he brought his car to a track where it was 40 degrees and dry, that he would gain ALOT of ground or just maybe a tenth or 2???


one of 2 things is happening here...either the weather has DRASTIC effects on the CL-S power or the 3.5 modification doesnt really add all that much if you already have headers/intake/exhaust. weve got guys running 14.2 with auto CL-S that dont have 3.5 or NOS. does that mean that once you get to that point, its going to cost you thousands of dollars to get even a few more tenths off the time??


the reason i ask all of this is because id like my car to be faster and i want to do more power mods...but i dont want to waste my time and money on something thats not going to give significant gains. if i was going to drop 2500 on the 3.5liter, id want at least a half second off my time of 14.3 for it to be worth it...is that really to much to ask?? and if so, then why can 300 dollar headers drop a half second but a major engine upgrade cannot??

Zapata

JimCol,
Did you see how much humidity he's driving in??? He is already pulling 14 flat. IF he ran in the same coditions you ran in you can believe without a doubt that he'd have a high 13.8 time.

Money is NOT a variable. Weather is..............

Nashua_Night_Hawk

Jim, good observation!

jimcol711

so youre saying that the weather conditions can almost completely negate the effects of 3000 dollars of engine work? im curious what my car would run in that kind of weather.....probably around 14.5, ehh?? when i ran my 14.8 in stock form it was about 60-65 degrees and some humidity...not much though.

Zapata

Yes without adoubt. I'm not sure if you are familty with Zerin. He has an s4 with major work includeding Rs4 turbo upgrades etc., which he must have paid a TON of $$ That car must be putting down in excess of 400hp/450 ftlbs of trq. Yet i've seen videos of him running in hot weather where he is running 14.3. He is even running intercoolers.

In street cars losing power sucks because we have so much weight to carry around. Dragsters, funnycars etc., have 6000hp, for them it's not a big thing..

Nashua_Night_Hawk

I gained more speed with run-after-run ( I dropped from 14.9 to 14.6s on the same night .... nothing has changed on the CLS....check sig

Zapata

That was your fuel trim settings changing to a more agressive numbers.

typeR

i dont want this to come off the wrong way, but some of your prospective is scewed...first of all 2 tenths is alot...not just ...it's alot...my times were improved upon by .5 maybe more because i was wearing the pulleys when i was pulling 9.5's in the heat and now no pulleys...all the goodies i have headers,intake,tires and springs thats it...26lb wheels and a 240 lb driver...does heat make a difference? yes ...when i first got the 3.5 i went 9.2 and was happy but apples to apples i went from 9.433 @76 to 8.969 at 79 but maybe 10* hotter than the 9.4
last thing: the first .5 a second is alot easier the the second...as your car get faster you'll start looking for hundreths,even thousandths...

jimcol711

i understand what youre saying, i guess i just have such high hopes now that ive been spoiled by a half second gain from 340 dollar headers. being that we are in totally different climates, i guess your competition (if you race against a car street or track) would be slower as well and the weather would effect them the same way such as a LS1 vette that runs 13.2 up here would run a 13.5-13.7 down in florida under your conditions....i guess i just underestimate the true effect of the weather...it makes me not even really want to go to a track again unless the conditions are the same...

example being like if i were to get unorthodox pullies and a CAI and then go back to the track in spring, chances are i may run a SLOWER time simply because the weather conditions would be warmer..that would really dissapoint me. but thats the nature of the game i guess and like someone mentioned, with street cars, weather plays a bigger role than in 2000 lbs/5000 hp dragsters

allmotor_2000

Nice times Type-R. Your 60' on stocks are very impressive. I could barely muster a 2.09-somethign on Nitto's. The track must be sticking really well.

I think you and I are making about the same hp... considering out mph is the same (99.xx). My only weight reduction was the spare-tire and I weigh 175 lbs.

I think if you were a 6spd, you'd be hitting 13.8's or 13.9's, IMO.

Hmm... guess I need to go to Carlsbad again while in NA form to get a 13.7.. eh?!?

allmotor_2000

What effect does ambient temperature have on these passes.. guys? It was 70-something fahrenheit the last time I ran. I wonder what 20 degrees might do to the E.T.?

Zapata

JimCol, some cheap mods.......... Take your passenger and rear sets. Also you could run with racegas. That's about .2's right there...

EricL

It depends.... on your ET at 70 degress (need barometric pressure and humidity for that day). The ET is important to "guesstimate" a reasonable time for a colder day. (It would also help to know if the car had a CAI, etc)

A 1% gain for each 10-degrees F of lower temp is a good baseline.

70 - 20 = 50 degrees difference and around 5%.

That's good for another 11 HP + 220 wheel HP (low end of the I/H) figures = 231 FWHP.

The change/increase in air density does not seem to account for the LARGE gains in some cars and the CLS. IMO, the gains are closer to about 1.5% per 10-degree F drop (I think the ignition timing; air charging and resonance in the 2-state plenum; and other CLS features/programming makes this possible).

Using the slightly higher figure, the car would be good for:

16.5 + 200 wheel HP = 236.5 HP.

With Mike's dyno or with Steve's 6-speed dyno, the absolute HP gains look even bigger.

So, the temps can have a profound effect on times.

If anyone wants to really "get into this" -- run over to a track with the same setup and see how the car does on different days with different temps. The humidity, barometric pressure, and temp are important (Of course track conditions change)


A note of caution -- when people start talking about cars running low 8s, 7s, etc in the quarter mile with wicked trap speeds, the air density will make more power for the engine at the start of the run and during mid run. The additional power is offset by the increase in air resistance due to the "thicker" air providing more drag with cars that run very fast. The aero drag is based on CD (coefficient of drag), frontal area, and the velocity squared.


SIDE NOTE: When TypeR was running, the weather map showed a green patch moving in on Tampa Bay and that's water. The dew point and temp were such that it could have been very close to 90-100% humidity. That does NOT help ETs 99.9% of the time.

YMMV

EricL

The headers will really help. However, until you get a chance to try with the same setup in higher temps, you wont know what you actually gained. The temps -- and other environmental factors -- could give you 0.2 to 0.3 seconds with no change to the vehicle.

The headers give you the most power at high RPMS. The cold air gives you more power across the entire power band.

Cold temps can hurt the ETs of those 5000-7000 HP dragsters -- it depends on careful setup and prep. If the crew chief didn't adjust the wings for the optimal downforce/minimal drag, low temps could hurt them. It depends...


Each different car: 3.5L, 3.5L with S/C, 3.2 with S/C, etc will have their performance altered differently by different temps. AS to how much -- I don't know for sure.

It can get difficult to know exactly what is doing what, if too many parameters are changing. An analogy would be similar to changing out your DVD, TV, and sound system and saying, “Man, this is so much better” and it could be that only the TV and the DVD were the items that really made the most difference, with the replacement sound system being inferior. Same thing goes with cars. People used to put on hairy cams with little carbs and generally get lousy results; if the person went to the track on a very cold day, they might think they were doing great…)

BTW, I’m not saying to only change one thing at a time. I’m just stating the obvious that it can get hard to sort out what happened with too many variables being "altered" at the same time. The track temp is one of them…

YMMV