FD RX7; good launch bad acceleration?
 

Looking at specs of FD RX7 we see that it does 13.8 on the strip and 0-60 in 5 seconds. i was thinking that 13.8 is not that good 1/4 mile time for a car which acceleretes 0-60 in 5 seconds?

That is quite a correct statement ... in the beginning of acceleration it is all about Wheight/HP relationship. Later on around 60 mph the airresistance is reminding that it is there to make it more and more tough to accelerate. Which is why top end speed mostly depends on foremost power and how aerodynamic your car is. (also gearratios but hey)

I was just checking out the corvette c5 automatic(345 HP stock) (my boss has one) and since it is stock I would guess that I would grab the lead if I change gear ok but then higher up the speeds he would come creeping.

It's not that different from most other 14sec cars.

It pretty close to what you would expect. cf. http://www.albeedigital.com/supercou...0-60times.html

you also need to consider that the FD had 255hp which would roughly translate to around 230 at the wheels....

its not bad considering an 04 EVO making 240-250 at the wheels will push it to a 13.3-13.6 (friend has a factory freak) as well for a heavier chassis thanx to AWD.....

true but EVO is AWD so it should have better 0-60 time compared to later acceleration.
but for example 6 speed NSX has roughly same 0-60 time but can hit 13 flat on 1/4

The NSX which was rated at those times was the lighter model and 290 HP.

The 1993 C4 Corvette was about a 14 second car. The FD's 1/4 mile performance "for it's time" was good.

lightest 6 speed NSX weights 1270 kilograms, thats Type R and Type S Zero produced in japan only and they can run mid 12s. USDM-s weight 1420

I don't get why you are even looking at 0-60 times. they are for bench racers. They mean very little.

If you look at the trap speed of a stock FD (around 100mph) then you will see that for this car a high 13 or 14 flat is about right, and like everyone said it's what you'd expect from a car of that era

Hell, High 13's are still good for a stock vehicle. Not to mention the handling that FD's possesed right out of the box. Rx7's have always been true sports cars. Much more to them then 0-60 times.

So, the same weight but more power (stock). So how do you not understand why it's faster?

He is confused that the 1/4 miles time is 13 flat but that the 0-60 is the same as a stock FD. Or at least the test he picked had those numbers.

0-60 times for the same car vary considerably - which is why you rarely see them discussed by car heads (or at least knowledgeable ones). For example, here are C&D numbers for a (USDM) NSX:

2001 Acura NSX V6 4.5 12.9 (C&D TV 2001)

the gear ratios on the NSX changed very little over the years even when they went 6-spd

cptpain
biggest change was that switching to 2nd from 1st didnt kick you out of VTEC. 5 speeds were loosing a lot of time because of that