23Racer

Agreed 100 percent.

B6T

iTrader: (2)

I see what you are saying, but whether the engine is making 25hp (arbitrary number) at partial throttle cruise through a street port or through stock ports, it's still transmitting 25hp through the engine. Stress within the engine is proportionate to the magnitude of the combustion process and no other factors really have as great of an influence. Porting only increases the efficiency of that process by allowing more air to enter the chamber for any given engine speed and throttle position. I suppose that after porting you get the illusion that the engine doesn't have to work as hard to produce the same amount of power because less throttle is required to accelerate at the same rate. But this is false, because by porting all you have done is increased the amount of air/fuel mixture that each rotor inhales during each revolution through the increase in port duration. Know what I mean?

Sorry to rant, but what you said just got me thinking.

eViLRotor

iTrader: (2)

Exactly. Also, if you look at the compressor maps of most of the mid-frame turbos like the T60-1, T04e, GT35R etc, you'll see that their sweet spot for peak efficiency is around PR 2, or 1 Bar.

So, while that link shows that it can be done, it's far from ideal.

There are a decent number of 550+ HP FDs in the single turbo section, and quite a few 600+ ones, too. They all seem to be drag cars though, and they all run much bigger turbos.

2Fierce

iTrader: (7)

If he wants 500hp just to say he has 500hp... and mayyyybe because his driving skills aren't upto par at taking corners 100% so he want's to brake early and than accel out to catch up (I've seen the cansaf car do this lol) than honestly, buy a supra.

If his goals are an all around platform with an ideal power to weight ratio, than buy an rx7 and tune it accordingly.

Sasha's s14 was only making 350hp last season and was running hot laps of 1.28 at mosport. I believe the viper the year before was doing the same time's with about 600hp?


On the cooling issue, a properly ducted v-mount is the best bet for circuit racing an rx7. I'm redoing mine, and a buncha other things as I'm building a time attack car aiming for really fast laps at mosport. So I'm really thinking this through too. It's not easy...or cheap.

20B-3Rotor

Are you serious.... lol

Our car was 340hp weights 2800lbs some times a little more... He was shifting it so easy because the first season we would brake one trany a weekend. So that cost him a 1sec a lap... the gear ratios were out... we were one of the slowest cars in gt on the strights.. There is a video of pauls 2rotor keeping up with us on the stright... And we still did 1.28 at mosport...

And Sasha's car wasnt only make 350hp.... I think he was almost doing 1.25's unless his car was like 2000lbs

2Fierce

iTrader: (7)

lol, I just saw a few videos up where the car would enter the corner and brake really early before everyone and almost totally **** up the pack behind! and than while they were scrambling to brake and get out of the way you'd just take off!

So than you're running a 20bNA? I wasn't aware of this! is this as special as the defined autoworks car !

I don't know the details of that s14....lol, only the people on ziptied do.

nik

Since the original poster hasn't replied, I think it's safe to assume this was a dreamland/rile everyone up thread.

RacerJason

iTrader: (5)

That's what I figured, some 19 year-old with a number planted in his head that would give him bragging rights among friends or someone looking to instigate a little back-and-forth.

Regardless, you don't need 500hp to be fast and it takes alot of seat time to graduate to a level that you can safely and competitively handle a car with that much power.

01Racing

I have been reading this for a while and I have the solution. Since we obviously dont have a budget (unlike me) I figure turbo is a waste of time. You need 472 cu in of 16V92 supercharged, 32 port injected Keith Black nitromethane fired power. 500HP HAHAHAHA lets try 8000+! That would get you up the back straight at Mosport! (well once or for 4.5 seconds whichever came 1st!)

Nismo Convert86

iTrader: (7)

Uhhh wouldn't repacking the parachute slow you down alot?

RacerJason

iTrader: (5)

If anyone is planning on top fueling the back straight then it's a good thing they took out the hump! Oh well, have to check out the Can Am cars when they return for the vintage weekend.

01Racing

Oh yeah the parachute, well maybe we can use an alcohol and only run 6000hp

23Racer

Or you could get a World of Outlaw 492 cu in all-aluminum block small block. Add twin turbos, run it on alcohol, twist it to 9500 rpm. You could easily make over 2,000 hp, have a motor that will last a race or 1 hour (whichever comes first) and maybe just maybe you could put enough brakes on an FC to slow it down from over 350 kmh going into turn 8 at Mosport. The aero would be unlimited and the whole chassis would be made out of carbon fibre. Dry the car would weigh about 1500 lbs. He!! lets add tunnels as well to have a nice ground effect. The driver would need a neck about 25" around and the ability to withstand 3 g's.

The only negative that I can see is that the fuel cell would have to be a 50 gallon cell and if you were going to run a 1 hour race you may, actually would, need a pit stop.

Sounds good. Lets go.

Eric

787Blover

screw u buddy

787Blover

screw u too buddy i am just trying to get some advice to build a car to have some fun with, and by the way u must be stupid to compare a piston motor to a rotary. u r obviously slow "(unlike me)" . i didnt ask for ur stupid BS. keep it to ur self sweet cheecks.

787Blover

everyone else who gave some advice thanx. i appreciate it. and there no way i am going to a piston motor. this is rx7club.com not lets put a 12 liter engine in my car cause i will be faster. and to everyone who who said i should work on my suspension and stuff first i totally agree. but i already got that figured out and know wat i am gonna do with it. to me the most important thing is weight no matter wat i do with the car. so thanx for ur posts this really helped

nik

Classic forum thread!

Nismo Convert86

iTrader: (7)

You do realize Nik is one of the most helpful, and arguably one of the most knowledgeable Canadian members right? Not a very good attitude if you are looking for help.

2Fierce

iTrader: (7)

Learn to spell, learn to type, learn to behave yourself. Learn to have a proper attitude towards other people, especially those who are giving you advice and help: for free, no less.

All the people you cussed out KNOW what they are talking about because they RACE their rotary powered cars. Also, get off your high horse. The rotary is years behind piston engine development, the ls1 is a great bang for the buck, and asking to build a 500hp circuit car is a stupid idea to begin with. Like we said, you should be aiming for a lap time.

Nismo Convert86

iTrader: (7)

Now when you want to call people "stupid" you really should completely spell words, especially simple ones like you, and your, and hell even cheeks. It just makes you look uneducated, and your opinion holds no value.

Alright cupcake?

Black91n/a

With an attitude like that he's going to have people lining up around the block to help him.

Nismo Convert86

iTrader: (7)

Kids these days

2Fierce

iTrader: (7)

Flame Him Till He Buys A Civic!

Nismo Convert86

iTrader: (7)

Maybe if he comes back trying to make a retarded point.

01Racing

So's yous guys, I guess the Nitro motor is out then?

I guess you can tell Im bored today!