I was just curious if anyone has come across any way to modify the tranny to have a quicker shift between gears. My first to second shift is VERY slow and makes me wonder about a "shift kit" for the xB. It would deffinitely help out. I don't want to "chirp" tires between shifts, just a little quicker would be great.

 

i asked this about 3 months ago, that seams like a long time ago too

https://www.scionlife.com/forums/vie...ight=shift+kit

they had fun makin fun at me and my question but its all good

 

Thanks. I just looked at your link and posts.
I guess the people that replied don't understand sometimes. I don't want to make my car faster (a shift kit won't do that anyway. it will however make it QUICKER...big difference).

I just don't like the 2-3 second lag when it shifts from first to second.

I don't think a torque converter would help with a quicker shift either.

 

The 'puter telling the tranny what to do is programmed (in the xA/xB) to make the shifts as smooth as possible, which includes smoothly backing the engine power down during shifts and then bringing it smoothly back up (I think it simply retards the timing and then advances it back to 'normal'). This DOES make the shifts seem to take a long time, but it is not actually the gear change that takes so long, but the stuff on either side of it.

This makes the shifting much smoother and also saves wear and tear on the drivetrain, but is annoying to anyone who wants their transport to be quick.

I'm not sure if the timing for that is an accessible part of the 'puter's programming, or if it would actually take swapping it out for a more agressively programmed brain...

 

you could always install a ratchet shifter if you want quicker shifting. from what i understand it would essentially convert it into a manual. (it would still be automatic of course,b ut youre doing the shifting. kinda like those cars now that allow you to drop it from drive into that little area with the +/- area to upshift or down) alot of new cars have those, i forget what they call it. but it just is supposed to make you feel cool because you can upshift or downshift an Auto.

 

It wouldn't help with the problem I am having. I can shift it manually now, but don't.

 

chrysler calls it the auto shift

reverse valve body where the shift pattern is reversed 1-2-D-N-R-P

that would go great with the ratchet shifter too

 

i want the bB column shifter
so i can build a cool console/armrest center thingy

all aesthetics aside FLUID!!
fluid makes a huge difference in these transmissions
and software, is the TCM flashable??? is there a TCM?

 

I have a TCM...Ummm Thunder Cloud Metallic...LOL
What kind of fluid do you recommend?

 

Transmission Control Module
and any high performance fluid will work
the stock stuff heats up too much too quick
Amsoil, Redline, BG all good stuff
make sure it is approved for your application

 

the one thing you can do to an auto tranny is a torque converter.

you can see if you they make one
http://www.levelten.com/store/import/index.htm

 

How will a torque converter help with a firmer shift?

 

try this

http://auto.howstuffworks.com/torque-converter.htm
http://members.aol.com/agspeed/torque-converters.htm

if that doesn't answer the question go to this link

http://search.yahoo.com/search?p=%22...&cop=&ei=UTF-8

 

I know what a torque converter does and how it works, but I looked at your links anyway. Once again, I have to ask...How will a torque converter help with a FIRMER SHIFT?
The converter has NOTHING to do with the shifting mechanism of a tranny.

 

all the torque converter does just transfer the power from the engine to the transmission, i'm 99% sure its a lock up torque converter too with fuel economy

and you can get 'em with a higher stall speed like if your drag racing you would want one thats in the power band ect. ect. ect. ...

 

yeah, I think you're right. I can feel mine "lock up" a few seconds after it shifts into OD. Then as soon as I let off the gas, it "unlocks". I think thats what it's doing anyway.

 

The 'lock-up' in the xB automatic works in the top two gears (3rd and 4th, or "overdrive").

The service manual shows the range of roadspeeds where this should happen, and it depends on up-hill, down-hill, or level travel, on throttle position, gear, speed, and brakes on or off. There may be input from the yaw sensor, too, so that odd things don't happen while cornering, but it is unclear.

I'm always fascinated when I start down the hill leading to my intersection and if I just lightly touch the brake pedal the xB shifts down and locks to provide engine braking. (This is at arterial speeds - at lower speeds it acts differently.)

The 'puter brains running the xB are fairly complex, and take all sorts of things into consideration. Amazing little box, really, expecially considering it's price...

 

tom does your manual tell you whats the stall speed of the torque converter is, i kind of would like to know and the others would too

 

tom does your manual tell you whats the stall speed of the torque converter is, i kind of would like to know and the others would too

 

Lemme look, Hornet...

Yeah. Here's the spec page: