Project RX-7

Is it true that all FDs here in North America were not 255HP as advertised, but rather 238-240HP ? Or was it that the initial test car was really more than 255HP ?

I remember them reported as 4.9s than 5.5s ..... WTF ?

Ryan95

iTrader: (10)

Most FDs that are running correctly shouldn't see a problem making 255HP at the flywheel.
My car made 217 @ the wheels at this altitude so I'm confident that it was running at least 255 @ the flywheel. Probably 260-265ish.

technonovice

0-60 in 4.9sec is a bit optimistic for a 255 HP FD.

Damnfuct

if the rx-7's wastegate measures pressure to absolute, then it wouldn't be affected by altitude. you might get lag before the turbo comes up, but with a twin turbo system, there's not much lag (compared to a TII). Also, it wouldn't affect teh power peak (power peak doesn't come before the turbo spools up)

millertime

I've noticed that Altitude has made a huge difference.

I have an 87 T II.
I live in Nebraska, and I spent this summer in Denver.
When I first got there, I though maybe there was something wrong with my car because it was noticably slower, and was boosting much lower. Once I came back, it was like night and day.

R.Cade

http://www.scuderiaciriani.com/rx7/M...article02.html

this article claims they dyno'd all the cars in the comparison.. all of them where making atleast advertised HP.

the rest of the rx7 articles can be found here..

http://www.scuderiaciriani.com/rx7/m..._articles.html


I think 5.3 was the highest 0-60 in all those articles.


I drove a stock FD for a couple years with 275 tires in the rear, I can almost garantee it would do 0-60 in 4.9... I would get atleast a car length on anything I raced from a stop, wich was enough to keep me ahead of the Supras to 90mph

It's all in the launch, slip the clutch a little, not the wheels, produces a nice slingshot effect. 0-30 is nearly instant, then a couple seconds through 2nd hear and your at 60.

Project RX-7

Cool .... well, how come the first C&D test posted the car at 4.9s .... was that car above 255HP ?

Andres

off to [3]rd gen specific..

technonovice

Perhaps the tires helped out, but scientifically you can't just go with the best numbers you see. I've always taken the average of the numbers. Sort of on the side...Motor Trend's numbers are USUALLY the optimistic while the others are USUALLY inline with each other.

Steyr

Australian FDs are rated at 176kw (~235hp).
I think I read somewhere that on the right-hand drive cars (eg: Australia) the exhaust is crimped to get past some part of the mechanics - which is a little odd considering they were made for RHD in Japan. Supposedly the US LHD cars don't have the same problem.