Transmission tune (PEOPLE WHO KNOW ONLY!)

  • Thread starter revsx
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rhood133
So I am currently drifting my RX-7 Spirit FD. It is fully upgraded and i really just dont like having 6 gears. I would like my car to act more like a 4 speed so there wouldn't be much shifting throughout. Anyone done this or have a good tune for it?
 
Stretch out the final ratio to be longer until only the 4th gear is usable on tracks, this is drastically reduce your accel though, and in turn it will make it harder to keep the wheels spinning since it will take a longer time span for torque to get to the rear wheels compared to a stock setting.

I don't know why you would even want to do this you mostly just use 2nd and 3rd anyways, rarely 4th on high speed corners but its mostly just those 2 gears.
 
An RX, with it's rotary engine, will SUCK as a 4-speed. The engines have no torque, so very little power low down. If anything, to make a RX drift better, you need to shorten the gearing and shift lots to keep the revs in the power band.

The idea being, you drop into the corner in the right gear and upshift once or twice on the exit. The short gears make it easier to spin the next gear up.

Timing your upshifts and downshifts is part of the fun of drifting :)
 
Maybe you have too much power? You don't really NEED more than 400hp to drift that car. Try dropping the hp. If you need 600+hp then just gotta deal with it.

Mine is only around 350hp w/max speed of just below 200mph. conservative but perfectly controllable
 
As twin-turbo says, you need to shorten the final drive so you'll keep the engine singing through the corners especially as its a 13b and they have fookall torque.

The higher gears ratios are grouped closer together so by lowering your diff ratio you'll be able to swap between these and keep the engine in the power band rather than if it was 2nd or 3rd and the engine bogging when you go to pull 3rd.


On my own drift car in real life, I'm using a 3.9 cwp rather than a 3.15 which would normally be matched to the gearbox in the donor car as well as the wheels on my car are smaller than what the donor car has

But as a result 2nd will be useful for very tight corners such as tight tear-drops, 3rd for most corners and 4th for big exits and lots of smoke out of long sweeping bends whereas if I used a 3.15 or a 2.93 which would be the same gearing as the donor with the smaller wheels in mind, 2nd gear might be what most corners will need yet still not quick enough, 3rd might be good for the long corners but bog down in the tighter turns and 4th will be useless.


And thats on a real car with Torque rather than a little rotary even though they are a lovely engine all the same:)

My E46 M3 in the game is setup on the same principal and think the guys on here that I've drifted with will back me up in saying that has no problems with gearing in the corners :D
 
An RX, with it's rotary engine, will SUCK as a 4-speed. The engines have no torque, so very little power low down. If anything, to make a RX drift better, you need to shorten the gearing and shift lots to keep the revs in the power band.

The idea being, you drop into the corner in the right gear and upshift once or twice on the exit. The short gears make it easier to spin the next gear up.

Timing your upshifts and downshifts is part of the fun of drifting :)

I agree with everything said here especially the last part.:sly:

You don`t like a 6 speed. Then you won`t like the lexus IS F it has an 8 Speed. I have one with full RM done and it is sweet.
 
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I agree with everything said here especially the last part.:sly:

You don`t like a 6 speed. Then you won`t like the lexus IS F it has an 8 Speed. I have one with full RM done and it is sweet.

Ahhh... no fooking wonder Twinturbo was in 4th and 6th on the last corners at Indy!
 
All my cars are tested at Autumn Ring Mini Reverse. If it red lines and can't carry through the corner. I've got to make the top speed higher. If it doesn't stay in the high RPM's and drops to much where it loses power.... Then you make the top speed lower.

Usually I set my 3rd gear ratio around 1.7xx or so.
 
for almost any car, unless it's got a big displacement with gushes of torque from the
bottom of the rev range(like a muscle car), you'd want to shorten down the gear ratios so that you can stay within the torque band while sliding.
rx-7 has a forced induction so the majority of the torque comes from the top of the rev range. if you lengthen up your gearbox, you'll have a turbo lag and won't be able to manage long slides as you have to shift up at some point, in which case you'll drop the boost and regain grip.

i don't have an rx-7 so i'm not so sure. what i have written above is based on s15 silvia :P hope this helps
 
I have enough torque in my RX-7 to use 4th, 5th and 6th to drift. Perhaps drop to 3rd to get around some tight corners at Tsukuba but you can shift up so fast mid-drift it never causes an issue. I do have quite low ratios though, topping out at about 130mph in 6th.
 
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