Goin to a Track 2morrow..... LETS BET....

[WhiteyClay]

whats up people.... Im going to a track 2morrow....(ISLAND DRAGWAY)Lets make bets of what I will run at what speed....

I got a 2003 G35 sedan....with:1. Stillen airbox with Ztube2. Motordyne Spacer3. Motordyne Mrev24. Unorthodox underdrive pulleys (set of 3)5. Borla Exhaust6. Nvidia TestPipes7. Baby seat in the backseat (lol)

This will decide if I keep the car or sell it.....If I dont do what Im expecting to do then its Bye Bye my G. And welcome 07 GLast time I ran 13.9 @106 without test pipes....will be happy with 13.6 13.7

[SVTCOBRA]

not a clue.....would like to hear what it sounds like with those mods!

07 throttle feels wierd to me, would wait and do an 08

[poms302]

I don't know much about sedan's. Do you have a 5at or 6mt? What were your 60' times. Your MPH is fast for a 13.9. I don't think testpipes will knock off 2 tenths though. Good luck let's see some time slips tomorrow!!

[zozoka1212]

I think it would be hard to beat your previous one but possible. Get an 07+ no matter what.

zozo

[WhiteyClay]

Shame Shame.....14.4 at 96mph......WTF happened.....I cant believe it.Nutting wrong with the car......I am so pissed....Ok My best answer would be WHEELS.... before i was running on my stock 17s from 03 sedan sport.... I upgraded to 19s forged.... from 06 coupe with brembo....Is it possible I lost so much just cuz of the wheels?

Alright Who wants to trade wheels... My 19s for 17s any takers?

[poms302]

keep them on, sell it, and get an 07...lol. Thats a bummer but was the weather the same? I don't think heavier and larger rims could add .5 but hotter weather plus the rims maybe. I'm sure you had a blast though, wish I could of went today.

[WhiteyClay]

it was pretty warm today.... over 80F on the track..... the previous time i had a good run was around 60s F.but I dont think weather could change that much.... but then again Wheels plus wheather = OVER .5 SEC. lol

[tollboothwilley]

I'll trade you 17s for 19s

[WhiteyClay]

but you have the ugly 17s..... i could only put them on my wheelbarrel...........lolj/kI am trading but looking for a good deal....thanks for an offer.....

[gwoods]

Good luck!!!

Try to get someone to shoot some video for you!

I think you will run a 13.8-13.7

[tollboothwilley]

haha

i was just playin

I'm gonna keep these as my winter tires and get a fresh set of shoes for the summer fun

[WhiteyClay]

i do have a video..... illpost it when i get some time..... sometime this week....

[zozoka1212]

The other question is what ohers were running. It tellsa lot. If others were running slower then usuall that pretty much tells you it was not your car.

zozo

[Beancooker]

Yes, wheels will make a huge difference. First off, going from a 17 to a 19, you probably changed your final drive gear ratio by using a larger wheel. Unless you shrunk down the tire so that the overall diameter didn't change. If the overall diameter is larger, then the final drive gear ratio will be a higher gear. It will give you more top end, but a loss in acceleration.

Also, having a heavier set of wheels, will slow down the acceleration of the car. More rotational mass, is harder to get moving and stopping. Lighter wheels are better for acceleration.

[Tampa G35 Sedan 6MT]

I had 18's on my G and then went to the coupe 19's! I can tell you that is why the sedan is faster than the coupe!

My 18's I use when i got to the track! I have 245 40 18's and I would say that the wheels and the weather would do more of a .5 second lost!

You made upgrades to your car and I would say it would have been over a second loss because of the tires!

DJ

[WhiteyClay]

Beancookerwhat do you think....someone wants to trade me for those 18s from coupe...They have 245 in back and 225 in front...If I went to put 225 or 235 in the back will I gain some of that i lost or Im just better of with buying 17s....17s sedan and 18s coupe......is there a big weight difference?

[Tampa G35 Sedan 6MT]

the Best thing is to buy tires that have a smaller aspect ratio!

if you have 245 40 19's go to a 245 35 19 or 245 30 19's

You will gain a lot by doing that! try this site and you can play with the tire sizes

http://www.miata.net/garage/tirecalc.html

[WhiteyClay]

or i might put some nitrous inside my tire....I think its a mix of nitro plus helium and it takes 5lb of a wheel....Heard it but never seen it

[Jacko3]

Whiteclay:

I can tell you that the air temperature have some effect on performance--car performs better during fall than in summer--cooler air.

I also have everything you have in your car, though mine is a coupe with 19 inch wheels, and i can tell you that top end is slightly better than bottom end even before i hit 5500RPM since after installing test pipes. So, I hardly rev my car too high these days with the test pipes. But when i do, the torque above 5500 RPM is unbelievable.

This weekend on my way home from work, I was at a traffic light with a corvette, I think it was a red C-5 Corvette---I am not sure. When the light turned green, we went at it ( though I shouldn't have done so--but how can anyone pass up a challenge with a vette). I was surprised at how quickly I was able to beat the corvette in the beginning acceleration, but eventually he had me with his top end horspower. The vette had this strange sound when its RPM hit the top end. When i heard the sound, i knew he was gone.

We went at it again, at another light, and a similar thing occured---we were both neck and neck at first--I was just as quick at the low end, but as you know, a V-8 will smoke any G at the top end. One advantage the G had was impressive lateral stability, which the Corvette seemed to lack.

He was just fishtailing like heck, as a result of all that torque upon take off, going to the rear wheels. So, while he was busy steadying the car from fishtail, I was busy moving forward without any hinderances. I would say that the use of test pipes has almost eliminated any excessive torque that usually caused wheel spin under low RPMS. Again, It maybe that the vette driver was just not good at taking off---I don't know. But i don know its low end take off launch was not as good as that of the G. if the G had even 20 more horsepower, the vette would have been stopped in its track.

The G-35 is surprisingly capable for a car of that size if given the right set up and operating condition. I would say that anxiety and zeal could also cost a driver valuable time. I am not sure which mod is required to counter anxiety and zeal (j/k ).

In my opinion, there are three ways to make an N/A G-35 very capable and fast at a cheap rate.

1. The simplest and possibly cheapest is adding a cold air intake.

2. The next is adding a test pipe---this is also cheap too and it allowed for quicker revs---however, it may be that my spacer, Mrevv, and catback exhaust is making the test pipe more effective and functional than without these mods---i don't know yet.

3. The next is putting the G on a diet---reduce weight anywhere you can--the G is a sleeper monster once it sheds weight. I can say this, since after installing test pipes which does not weigh as much as the cats. Simply swithching to a Stillen catback exhaust reduced some weight as well. I am seriously considering removing the back seat of my G as the next weight reduction plan.

4. Use synthetic oil--allows pistons to rev faster.

I bet I have probably saved somewhere between 30 - 50 lbs since I added my mods to the G.


Modified by Jacko3 at 10:23 AM 9/22/2008

[TeflonG35]

The problem is the baby seat. Of course. You should know that. J/K

I think it is the difference in temps that made the most difference.

[BrandAidDesignG35]

The problem does lie in the tire/wheel size... I just hit the track, I have similar mods, but I had 20s on the car, I ran 15.1 @ 93 mph so you're not looking too bad, I may be the one looking to trade... lol

I sold my 17" stock wheels too I have 18"s that I'll be putting on next time, you'd be surprised what a HUGE difference tires make, and on the track Jacko, I think even adding slicks for the track would have an even more impressive outcome than the list of mods you mentioned.

[WhiteyClay]

yeah I get the whole thing...Its just I never knew that wheels can do a big difference.... Before I did test pipes I ran 13.9. on my17s.which were twice as light as those 19... so now I was expecting more...since pipes went in.but i guess my wheels plus tools and spare in the trunk and a BABYSEAT. and my DC sneacker collection....Ok im planning of going to a track in 2 weeks with 17s on and hopefully i'd be able to do lower then 13.9 (everyone i know is amazed with that time)

Ill try to post video but somehow I used a dvd recorder and recorded from my camera to the dvd recorder and it dont show anything on a computer. while it plays on my PS3

[Beancooker]

Okay, you are already looking at buying a set of wheels, so look at Weds Sport. They're not as expensive as Gram Lites, but are really lightweight. Get 18's, you'll be fine. You could even go back to 17's.

You have to decide which you want, the Baller look, or a fast car. You can't really achieve both easily.

As far as what gas you put in your tires, it won't make the wheels lighter. You could fill them with helium 100%, but the rotational mass will be the same.

Also remember that *about* 100lbs is equal to 5 HP. Load up the car with 300 lbs of crap and lose about 15 HP in your acceleration.

[WhiteyClay]

nah do dont go for a baller look...i dont go for looks at all... Iam trying to get the most out of my G without FI.I got those 19s cuz it was a steal. 300 bucks with tires.I picked em up and sold my 17s for 400 and I was left with 100bucks plus19s...so whichever move I make now I dont loose.Oh yeah going back to baller look.... Im not trying to be a RICER...Anything i do in the car I think about it 20 times, I ask 200 peaople and do some homework about it. And not trying to spend a fortune. I got a 18month old daughter and even with those gas prices now she is costing me more then i spend on my G...lol

but thakns beancooker....ill look into that brand of wheels

[Beancooker]

Didn't mean to imply you were a ricer. I just think that as cool as big wheels look, they're not as functional. Having some sidewall is nice.

But yeah, your stock 17's are a lot lighter than the 19's.

Also remember as far as acceleration is concerned, take into consideration "unsprung weight".

This is weight that doesn't rest on the springs. Control arms, brakes, wheels and tires, etc...

The way I was taught was that shaving 1 pound of unsprung weight is (acceleration equivalent) to shaving 20 pounds off the weight of the car.

So if you add say 15 extra pounds per wheel, then you have 60 extra pounds of unsprung weight. That will make the car "feel" as if it just gained 1200 pounds while accelerating or braking.

[WhiteyClay]

So now we all learn something everyday....So now I fill my tires with hellium and that takes of 5lb of a wheel. thats 20lb total...so its like shaving 400lb of the car?

Did i get that right?

oh yeah and thanks for everything...

[Beancooker]

No, because rotational mass has a different effect than absolute weight. On a scale the wheel would be a little less in weight, however, when rotating, even if the scale weight is lighter, it would still have the same rotational mass.

The helium won't do anything for you.

Remember, you are not actually lightening the wheels with helium, the weight has stayed the same. Helium would have an effect of "lift", but that won't do anything for rotational mass.

[WhiteyClay]

alright bro. good looking out.... I think i'd be able to write a 500 word essay on what you just told me...lol

Thanks beannie

[Beancooker]

My first response was much longer and more detailed, but after I hit post, I read it, and it was very informative, but rather confusing. So I edited it and it's much easier to understand. Hell, if I wrote it and it was confusing me, no one else would know what the heck I was talking about.

Glad I could help.