Lamborghini Diablo has a five-speed. 200+mph can't be wrong.

 

Well - I believe Sam.

Sounds interesting - there is a story behind it somewhere.

 

You think an N/a is going to have the power to top out 175 mph?
Umm, no. Even 20B NA's (streetable) are pushed to produce 380 hp.

If you are producing that much power, than your engine will be built up enough that you can rev past the stock redline, and STILL not need a 6-speed.

 

NA FC's max out at about 140MPH.

I got to 135 after a while and it took some distance but really wouldn't go higher.

Man **** goes whizzing by at that speed. It handled pretty well still too.

 

maybe they put in a 4.30 rear and wanted to save gas by swapping in a 6 speed...

 

the 6 speed could increase your top speed only if the overdrive gear is less overgeared than the stock 5 speed's overdrive.

I've topped out NA FC's in 4th gear around 140mph with the buzzer screaming, shift into 5th and the car decelerates @ WOT. If the ratio wasnt so tall in 5th, making it a bit closer to 1:1 like the miatas 6th gear is compared to the fc's 5th, it would probably accelerate a little bit more up to around 150 before it ran out of power in 6th.

 

yeah the later model NB8 special editions have the 6 speed but i dotn know if it will even bolt up...will it?

 

Why do we really give a rats *** and are arguing over the 6-speed...

DUDE... for 600 bucks... buy the f'r!!!

 

for real!!!!

 

Some where on here( to lazy to search right now)there was a post about a conversion that put a GM six speed in an FC.I think it was mostly turbo guys that did it though.I think there were acouple of people in the thread that had done it.Maybe I'll search for it later.

 

no NA FC would ever have enough torque for a 6 speed.

I don't even think its possible to match a GM 6 speed tranny with a 13B, and even if it was the car would drive like ****. I think I need to see pics of this to believe it, otherwise I think this is BS.

 

Where was it established that this was a GM??

for all we know it could still be a 6 speed miata tranny??

 

This isn't the thread I was thinking of but I did find this one. https://www.rx7club.com/showthread.p...=t56+six+speed Also searched in the rotary performance section.Alot of talk about the swap but I can't seem to find if it has been done.It was mostly 3rd gen and TII guys who were making big power talking about it anyway so as far as a the n/a being discussed in this thread it is comparing apples to oranges.Also I don't think it was ever established what kind of six speed it is.I had just remembered hearing rumors of an adapter to mate a T56 six speed to a rotary thats all.

 

where the hell are the pics!?

 

Please keep this thread friendly...

 

why wouldn't a N/A not have enough torque for a 6 speed

if a miata can do it I think a FC could

 

the point of all six speeds IS NOT to give you another overdrive
NOT all six speeed give you higher top speed

as was stated before MANY six speeds have a 5th gear ratio of 1:1

just like a normal 5 speed has with 4th being the 1:1

the first five gears of many many six speeds are made to be closer together


your comment makes it sound like we don't even need 5 speeds
lets go for a 4 speed
you know 3 + overdrive

also when building a car as you talk to produce more power many times that narrows down the powerband making a 6 speed even more welcome

this way on each gear shift the rpms don't drop so much and you are better able to stay in the powerband



you ask me I would love a 6 speed just for the better acceleration


so point of this pose of mine

remind you that six speeds a lot of time don't give you more top end
rather many times better acceleration because there is less of a drop of rpms keeping you in the powerband

 

Like rxspeed says...

It would be nice to have an extra gear somewhere in there -- it doesn't have to go up at the top.
The S2000 is quite similar to the 7 in its revvy, low torque nature. 6 speed close-ratio is natural for a little car that likes to rev high. Also more fun flipping through the gears, wider range of ratios for a wider range of situations, cool factor...

Ya, it kinda sucks to crap out in 5th on the freeway, but it is good for gas mileage on a long ride.

 

Whatever gearbox it has, if it has six speeds, it's not stock. Most likely he just has no idea what he's talking about.

 

dude makes a point, by saying do na's have the power
to max out 5th. i can say that i have never maxed out
5th for that matter 4th, i maxed 3rd at 120+mpg.


but in the end like NZvert said 2nd gen did not come
with a stock 6 speed tranny, I have heard of
conversions done and aftermarket trannys and such but
to me it seems that some cheap *** found that tranny
in a junk yard and swaped it in. neverthe less i still
think i would buy the car. and a used ecu and drive it
over to that dudes house and ask if he had anything
else for the car. but thats jsut me.
lates matt22

 

3rd at 120 miles per galon??

i know he meant 120mph

 

How long will this thread go with no pics? If this is for real I wanna see it get a vid if possible and shift through the gears, not cause we don't belive but becasue I've never seen or heard of it and i want to see

 

no offence dude but I don't see third at 120mph

that is around 6500-7000rpms for me in fourth gear

who knows the rpms you would need to run that in third

 

You'd need nearly 10,000rpm to reach 120mph in 3rd...

 

ya right its like 8grand,
or a little after if i had a aftermarket
tach i could tell you for sure.
lates matt22