tried to search, could not find anything. what is the top mph in each geard in our FD's?

 

http://www.fd3s.net/magazine_article...k_article.html

 

thanks....i though my 3rd went a little higher.

 

it said 101mph at 8k isnt redline at 8.5k?

 

not sure, but i though my 3rd was around 108ish. oh well guess i have a mission for the trip home today :P

 

Um, NO.

The numbers in the article are based on actual recorded speed at the rpm. Speedometer error, tachometer error, different tire diameters, etc, all have an effect on the speed recorded. My car tops out just over 100 mph at 8k rpm just like R&T measured.

 

Also keep in mind ppl may change the rev limiter on their PFC etc, which will affect max rpm.

If you search, you'll find the individual gear ratios for the tranny, and you can use them to calculate max theoretical speed in gear based on tire & wheel size, rpm, etc etc.

~Ramy

 

hmm... I've gotten it to 144 in 4th, but I could only get to 152 in 5th. I'm sure you could +/- a few mph, but I wonder why the speedo would read faster in 4th and slower in 5th than the times listed in the article? I'd figure I'd be higher or lower in both departments.

 

1st 3.48
2nd 2.02
3rd 1.39
4th 1.00
5th 0.72
final drive 4.10

stock

 

ive never seen the road and track article for an Fd... Nice find

 

1st 7920 is 40mph
2nd 7440 is 65mph
3rd 7360 is 94mph
4th 7380 is 132mph
1/4 mile 14.0@99.8 \top speed should be 164

thats using optimum shift points

 

Optimum shift points? ran faster than that in a stock FD....

 

airtemp 65 deg
barometric pressure 29.38
relative humidity 55%
elevation above reference 0
headwind or tailwind 0
roadgrade 0

all this comes in to play so not saying you didnt run faster than that.

 

oh yea stock horsepower on that 164 topspeed

any yes i was at a local track and watched a stock 94 do 13.4 in 1/4 (just tires)

 

You do not have to find it. Maybe/maybe-not, you could have calculated it yourself.

The manual list the gear ratios and you could find your tire static radius.
The rest is simple math. It would be a learning experience.

 

At 7,500rpms in each gear. US Automatics have a 3.90 Final Drive, US Manuals have a 4.10, JDM have a 4.30.

F/D 1st 2nd 3rd 4th 5th
3.90 39mph 68mph 98mph 137mph 191mph
4.10 37mph 65mph 94mph 131mph 182mph
4.30 36mph 62mph 89mph 124mph 173mph

F/D (Final Drive)

 

You can change the redline by using your pfc? What do most people set it at?

 

5.5 0-60

 

Default rev limiter is 8100 rpm. No point in changing it unless you have reason to do so and you have the modifications to support it.

 

what did you use to get those numbers??
i have a program.(CT) its pretty dead on.

 

Your rev limiter shouldn't be considered your redline, it should just be for accidental mis-shifts and over revs.

 

Why is that? I was under the impression that rotaries handled higher revs much better than piston engines do.

 

But the redline is 8000 rpm.

The redline is 8000 rpm for durability and power reasons. Unless you have a big turbo and massive porting, you are not going to be making good power that high anyway. There are several good threads about this in the rotary performance forum....