Trexthe3rd

As the title stated, two seperate races.
My setup:
Stock porting, RX6 turbo, AEM EMS, HKS Twin Power

The first one with 350Z. He has a Greddy twin turbo kit with a claimed 9psi boost and 396WHP. I had set my boost level to 15psi in the first run, we ran on the highway from 50 to 100, I only edged out very slightly.
Reset the boost to 18psi and beat him by 2 cars under the same condition.

The second race with the 780WHP Supra. I ran 18psi (not sure what he was running), the first race he miss shifted, the second he over took me by a car and a half by 100. I actually was expecting to be beaten by a larger margin by a car that has nearly twice the power I have. You win some, you lose some.

silver_7

Damn nice kill on the 350.

iceman4357

iTrader: (2)

780whp and he only beat you by that little...at 18psi do you put down close to 400? There was just a vid of a 500whp and a 400whp rx7 racing. the rx7 pulled him a little, but then there was another video of the rx7 racing a 700+whp supra and the 7 got pulled hard as hell. Maybe the supra driver is not very good or you are mario andretti. Good kill/death

badboi24u

iTrader: (1)

supras always get lots of hp but still dont go to fast.

Trexthe3rd

The uncorrected dyno showed 380 to the wheels at 18psi. I have a feeling the supra guy inflated his power number. He did miss shift the first time around, the second round seem to have gone fairly smoothly. I can certainly tell the lag he has on the turbo, but once the boost hits, it almost sounds like a gun shot just went off.

rotorsownyou7

Ha, good one.

Rx7thHeaven

A 780 RWHP car is going to be fast as hell any way you look at it even if the car weighs 3400 lbs. I ill bet you anything that the supra was not on race gas, so he wasnt boosting 30+psi that would be required for that number. A single turbo supra on pump gas will put down around 500-550 RWHP which would be about right for beating a FD making close to 400rwhp by a car and a half.

1QWIK7

iTrader: (33)

dont know if you were being sarcastic but if you werent, you obviously havent rode in a high hp supra before or even raced one on the highway..

dont believe that "what do 400, 600, and 800hp supras have in common?" bullshit because thats complete BS..

Tournapart

iTrader: (4)

supras are very fast, but they weigh alot more than a 7

FB II

you sir don't know what the hell you are talking about. my close buddy here has a 94 supra.. stock motor, trust single turbo kit t76, map ecu, 14psi 500rwhp.... 20psi 655rwhp both ON PUMP GAS!!!!! he just raced an r1 a couple days ago and pulled a couple car lengths on it. raced him twice to make sure there was no error supras, no matter how much they weigh, have an engine that is just fuggin terror. he's shooting for 750 - 800rwhp with race gas. if you'd like a dyno chart give me your email. sux to say... the 7 will almost always lose to an equally modded supra

rotorsownyou7

Well I know a good amount about Supras, and 20 PSI 655 rwhp is a little tough to believe. But even so, 800 with race gas, easily done. The 7 will always lose to an equally modded Supra? That is where you fucked up. This is not true whatsoever. An FD modded will run the exact same as a Supra as long as the mods are kept the same. When Supras get over 700 rwhp you don't see 7's get to run with them because after about 500 7's have a little more trouble making that power.

BTW, Most Dawg's with that turbo size at 20 PSI will put down around 600 RWHP.

A trust t76? He gained 155 RWHP with 6 PSI?

I actually have never seen a single Supra on Pump make more than 647, and that was a T88.

Trexthe3rd

Let's not get into a pissing contest about Supras, he beat me, that's that.
I did a little calculation, in order for the supra to run even with me (same weight to power ratio) he would have to have around 530 whp, so to get ahead of me by a car and half that quickly the supra must have at least another 150 on top of that, so the minimum estimate on his power would be 680.
Sorry but Rx7thHeaven, you are wrong. The best a 500-550 WHP Supra would be able to do against a 400WHP 7 is run even. Do the calculation and you'll see.

rotorsownyou7

Actually the Supra would have only had to be at 490 RWHP to keep up with a 400 RWHP RX-7. That is if you use power to weight. There are many more factors though, and I would guess a dawg on pump gas at say 580 WHP would have been able to take a 400 WHP RX-7 by a car and a half. This is unless your car has a lot of weight reduction and he had some subs in the back, then I would go 530. Then drag. I still don't think a 780 WHP would have only beat you by a car and a half unless he sucked at driving. But of course that does happen. He just happened to be running race gas or what?

BTW, the Supra and the 350 weigh the same, with half the power you only beat the 350 by 2 cars. so 380 WHP only equals 3 and a half cars?

Not saying anything against you but something just sounds crazy.

Trexthe3rd

Not sure if you realize this, but the whole race is over in less than 5 seconds, to get a car and half lead in less than 5 seconds running at highway speeds takes a good deal of power.

let's do the math:
FD weight to power = 2700lbs/400whp = 6.75 (my car maybe a little lighter than that)
Supra weight to power = 3600lbs/Xwhp = 6.75, solving for x = 533.33 whp

Not sure where you got 490 from?

Add on top of that, I believe the FD has lower Cd then supra. At higher speeds, the effect of Cd becomes geometric. Granted we weren't going at 200 MPH (by the way, it would take more than 100whp to push a car from 200MPH to 210MPH due to Cd), but it still comes into play at 70+ MPH.

BTW: Supra and 350Z does not weight the same. I just look up their stats, the Supra weighs 350 lbs more than 350Z coup, and 180 lbs more than the convertable.

rotorsownyou7

I do not know where you got that weight, I get 3415 from mkiv.com. If your FD is that light, it must be lightened pretty good. I have everything out almost I can take without robbing the interior and I get 2802 with 1/2 tank of gas. If you count drag, which I did not, yes the FD will do better. That is why I added power for the Supra to be what I said. 350z comes in at 3256 from what I get. So not that big of difference.

I am just trying to say if the Supra made 780 that night, and you made 400, and he only pulled 1 and a half cars, then he wasn't the best driver.

I mean dude, I own a FD, but as much as I love it, I can accept the facts

rotorsownyou7

BTW nice avatar.

villision

I was certain that the 350z could not take 9 lbs of boost. The bottom end is 50/50. Heads are fine, but the intake manifold is absolute junk. Lean in 3 cylinders, fat in the other 3. There are some 350z out there making over 800rwhp, but on complete built motor's and expensice custom intake manifolds. My friend had a 350z with the 18g greddy kit on it. He put down 350hp/360 torque, but that was with his igntion tuned. Then we found out why greddy dows not recomend hooking up the igntion harness for the E-Manage. Keep blowing up igniter's. However, he was on 5.7 lbs of boost and put that down. He was skeptikal to push it any farther.

Ty

Rx7thHeaven

rotorownsyou7 is correct, TT supras weigh in right at 3400lbs and an FD will be in the 2800lb range. Both cars will be a touch lighter because of the single turbo setup. FB II... I am in winston salem, who is the guy in charlotte with the supra you are talking about? I might know of him. I know I am going to be argued with about this, but I feel that I have a very good perspective on supras, I have 4 friends around me with supras, 3 of which are single turbos 2 of which I helped convert to single, one car making almost 800rwhp and the other 2 making a shade over 500 rwhp on pump gas and stock fuel systems. I have had my car in 2 different single turbo configurations, once with a T78 and i also had an SP74 turbo I made 442rwhp with the T78 at 18psi and 404 rwhp at 15psi. We have raced numerous times and I have NEVER beaten any of the supras. I am talking about highway runs where driving is really not a factor. In MY experience the weight calculations do not always work, Especially on the highway where weight is LESS of a factor (notice i said "less" and not "not a factor") I think that the supras huge advantage in torque over the 7 plays a large part also. When I made 442rwhp I only made 333rwtq and when the supra makes 520rwhp it is also making 500+ rwtq. Again these are only my experiences. Flame suit now firmly secured

Trexthe3rd

There is something seriously wrong with your setup. 442 whp and only 333 trq? My car had 333.5 trq with only 366whp, at 378.4whp it is 344.7 trq.

ForceFed

Post up his dyno sheet. Go to ImageShack.us for FREE hosting. Who's your close buddy with the Supra? What color is it? Auto or 6 speed? I'm usually on the in and ins and I don't know of any Supras in Charlotte making 655 on pump gas? Is this a Team Rush car? Who did the work? If his car is legit and he's beating bikes, he should race one of the Underground Racing Vipers. That would be a fun race to watch

Rx7thHeaven

I beleive that there is 2 reasons that your car has a torque number so close to the HP number. First is because you are still using the stock porting, when you street port the engine it actually looses TQ. Also by running the smaller turbo that you are running, you hit full boost lower in the rpm range where max TQ is usually made. Just curious what RPM did you make your peak TQ number and at what rpm is full boost hitting?

AZ'sFastFD3S

I just ran my friend in his T78 supra @17psi on race gas on stock fuel in my untuned FD with a GT42 @12 psi. I started out behind him in second gear and went to third and was pulling him a little into 4th as well. But I was in in coming traffic lane so I backed out (it was 1200am so nobody was out). I am going to have to say if I was running 17psi tuned I would have passed him.

Tim Benton

iTrader: (1)

Nice picture AZ.

Mike, not sure about the 2700 number for the weight counting you in the car. I can't remember what model it is, but my touring, with a lot of weight removed weighed in at 2720 w/o me and about 1/4 tank of gas.

Tim

Trexthe3rd

2789 (base model with 5 speed)
2857 (base model with automatic)
2800 (R1)
2862 (Touring with 5 speed)
2923 (Touring with automatic)

My car started out being the lightest of the bunch (base 5spd). Here is a list of mods that would have effected weight.
Tein coilovers (lighter than stock)
SSR comp wheels
RX6 turbo and exhaust manifold
No rats nest
No air box
No pre-cat
No main cat
CF hood
Smaller battery
Underdrive pulleys
No spare wheel/tire

I think all in all, it would be over 90 lbs of weight reduction when added up.
A touring 5spd started out at 2862, so you have dropped over 140lbs of weight from your car, it is conceivable that with moderate weight reduction on mine would yield a 2700 curb weight.

Trexthe3rd

That's true. I forgot about the porting issue. I don't have the dyno chart in front of me right now, but if memory servs, full boost is at 3200 and peak torque is around 4200.