ok im wondering .. if an rx7 with about 370 whp races a awd 400 hp twin turbo porshe........who would win ... from a stop??? a roll???? just a question ... i might challange porshe owner in the near future when my car runs and gets tuned,,,,,his car weight 3300lbs and im alot less than 3000lbs would the 30+hp of the porshe matter much with the extra weight???

 

find out the coefficient of drag for each car and the power to weight ratio then we can do this a little more mathematically instead of poking and guessing, also is in an AWD or RWD porsche?

 

AWD.. he says hes beats stock viper and **** like that .... his boost is at only.8 bar ... i sayhe got about 30o-400 more lbs maybe 30 hp and he only redlines like at 6.5k rpm ... i would be running et street or some other kind of street radial..... i will post and video the race i just have to see if i got a good chance....i know he would own me in 1st and maybe second but i would catch up shifting at a higher rpm......i need so input cause this might happen soooon.....

 

u ll win i think!!cuz you weigh less and ur putting down good amount of power!! nahh i dont belive him one bit that he beat stock viper!! stock viper has 500hp at the flywheel.. well the new one does at least

 

You should win, it will be a close run though, espically if he is AWD. You will just need a very good launch. You should be able to hang with vipers as well.

 

Go for it. Race him.

BTW, based on what a friend told me who ownes a Turbo S, Porsche imbedded traction control into the ecu and it is nearly impossible to get rid of it so according to him (my friend), this gets rid of the AWD launch advantage.

He was probably talking about a RT/10. Those have 415hp and 480ft/lbs and weigh 3500lbs. But still a little hard to believe.

 

My 993tt with stage 1 kit. 450 crank or 380whp. Rx7 with 380 rwhp. Don't race in the 1/4 from a stop. You may trap the same but if he knows how to launch you're in trouble.


http://www.radkinsrx7.com/videos/FD%...sche%20993.mpg

My 993tt against an 650rwhp supra dig!!!

http://www.radkinsrx7.com/videos/993...from%20dig.mpg

 

Oh yeah I raced a viper gts with exhaust from a dig and won by a car to 120mph. In the 993tt.

 

RX7 will win from a roll. From a stop, he will get the jump on you, and you may not catch him if the race isn't very long.

 

If he can launch his FD well & has good traction, the Porsche will not pull him out of the hole as the FD is significantly lighter. His traction can be improved over stock with wider rubber to further aid his launch (maybe he has 245 or greater rubber - I dunno, but good rubber with lighter weight should allow gim to launch as well as the 911). On a roll, the 911 gets pulled, obviously.

Indy, nice 911 you had! Thanks for the vid - pretty cool (Geezuz Supras are slow from a dig...different story on a roll though ).

-Matt

 

911 is one of the rare cars you don't want to run from a stop w/ the RX. Try to get him from a low-speed roll.

 

Since the Porsche is an AWD, it will have an advantage from a stop.

 

As I mentioned, its not that big of a factor due to the lighter weight of the FD. I've pulled two 911 TT's from a stop - always right next to me - I've never been pulled (although I do have 275s on my R1). Correction, I got pulled ever so slightly (maybe 1 - 2 mph) from a modified GT2 when I had a 175 lbs passenger (the GT2 driver was solo) & I was down 20 rwhp from current. However,...... this doesn't count anyway, ......GT2s are RWD (point being the GT2 had RWD and was quicker out of the hole than his 4WD counterpart - a std 911 TT).

-Matt

 

Matt,

Given two drivers of equal skill, an awd car will always get the jump. It's just physics. Since both cars are traction limited at the start, the car with the most traction (given equally skilled drivers) will always have the advantage. Just because you were able to get out ahead, doesn't mean that your car is faster from a stop. It simply means that YOU were faster

 

That's kinda close... the Porsche certainly has an advantage with AWD, but the FD is allot lighter.

I think such a race would come down to the driver.

 

Thats not true man I raced a Viper GTS from a dig and I smoked the living **** out of him. From a dig the 7 can take out lots of cars. you just suck at launching. Vipers got to much power and weight to be launching on a 7 from a stop. no chance later the Viper might catch up depending on the distance of the race. I raced my buddys 3000 VR4 off a dead stop and took his *** out by 2.5 cars and left him not seeing my tail lights. quote practice on your lauch!!!!!! Cause I can hook my 7 no prob......

 

are u sure he was even racing you? it looked like u pulled up and punched the car and he took off normaly.

 

a modded fd with 350rwhp is a complete disaster to launch if u dont have drag radials or some serious width back there. i dont know what u are talkign about!?!
Ever been to the strip?

 

He said he was going to be running et streets or some other drag radial, that should pretty much eliminate the "awd advantage".

 

yeah with et streets, at the strip, an fd could have a great 60' time. but i thoguht we were talking about street. i get 2.0's at the strip with my street tires and i believe thats pretty indicative of what others run with street tires non drag racign setups. having said that i literally cant launch my car on the street from a stop. i cant even shift hard from first to second on the street and stay on the throttle.

 

um. no. being able to make power at a higher rpm only tends to matter if you are both running the same gearing. which you most likely aren't. gearing is more important than how high you can rev. and if you're stock turbos, the power should start dieing off around 6.5 anyway, making it pointless to go to 8.

 

MY STOCK TURBOES pull to 8k. its all about the tuning.

 

i raced one from a slow roll and beat him. he was at my door the whole time though. i have a vid of it however you cant really see him after i pulled ahead on him. although you can see that he never passes me or gets into camera view until i let off.

 

If you really wanna find out, go from a dig. If you just wanna make sure you dont get beat, go from a roll...I've seen GT(dont remember if its the 2 or 3 - but it was turbocharged) get pulled on a roll by a full bolt-on, non seq. twins R1.

You can win! I seriously doubt that the porsche with the extra 400 lbs can win even with the 30 hp deficit.

I just hope this is not one of those what ifs that pop up every once in a while!

 

you will loose from a dig but from a roll a fd will pull on him (not by much but enough to say its a win) are you on stock twins?