r2d2michael

the tranny..
so i know for a fact that the new 6 speed auto ( U70E ) WILL bolt to a 2AZ-FE ( 2.4L ) and the older 4 speed, the one we have, (U241E ) WILL bolt to the new 2AR-FE (2.5L) and 1AR-FE ( 2.7L ). what i dont know is how close are the motor mounts and being that its an auto do i need a new ecu.

i would think i would need the ecu because the ecu tells the tranny when and what gear to shift to. so if my tranny has 2 more gears than it did before, how will the old ecu know that and tell it to shift into 5th ot 6th? also would my dash say 5th or 6th gear in sport mode or stay at 4th for 4th 5th and 6th gear?
here are the gear ratios for the 2 trannys just to have.

U760E

first (3.300)
second (1.900)
third (1.420)
fourth (1.000)
fifth (0.713)
sixth (0.60

U241E

first (3.943)
second (2.197)
third (1.413)
fourth (1.020)

im looking at the newer tranny beacuase for the 2 extra gears. i would love to ride on the high way at 70mph and below 3k lol

the motor...
i want to find a trashed tc2 and snab it motor. after looking at some dynos for boosted 2AR-FE ans 2AZ-FE im seeinf about 50-60 hp jump. not sure what the the 1AR-FE would be boosted? so if the motor mounts are close( i can weld damn near anythng) i would need a new wireing harness, ecu, motor mounts, and what else?

if anyone know someone with the tc2 or the newer camray that could measer the block to see if i could keep my header and s-pipe that would be great lol. just wounder how close it is.

i have gone over just about every toyota engine and tranny and it really seems the best way would be the 2.5l or the 2.7l and the U760E tranny. if anyoone has ANY INPUT and real info please post!!!

r2d2michael

so after talking to rob at DESCENDANT the new 2ar-fe is completly diferant from the 2az-fe. nothing is the same. so i will probly do the 6-speed auto swap first. they are working on swap kit for the tc1 and xb2!!

Kingshawty12

i was wondering how much longer it would be for someone to do or even think about swapping to the new motor. xD

TrevorS

iTrader: (1)

Too bad, so much for my daydream about swapping in a used 2AR-FE !

r2d2michael

im sure it will be done. just not my me lol. ill do the tranny swap for sure!!

Roller_Toaster

iTrader: (1)

I wouldnt mind not having a 4 speed anymore. Highway driving sucks.

oreoremix42

What about 6 speed manual?

r2d2michael

descendant is working on kit for the manual too.

Kiddtango717

6 speed would be amazing!!!! but i wouldnt even mind just a 5 speed at the moment. when im in sports shifting mode it's like 2...3...4....... ...... ..... DAMMIT FUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU~!!!!!!!!!!!!!!!

r2d2michael

^^^i feel your pain lol^^^

DJ_FroZone

iTrader: (2)

if the six speed auto is possible i may wet myself

TrevorS

iTrader: (1)

I've been having that problem with my Eclipse for years. I get all set to shift up, push in the clutch pedal, and then realize I'm already there -- fifth! I've just started getting a little of that with the xB2 as well, but nowhere near as bad !

oreoremix42

I would love to drop a 6speed manual in my car and get rid of the 5 speed. I want better mpg!!!!

Roller_Toaster

iTrader: (1)

^ dibs on your 5 speed tranny if you swap in a 6 speed. :D

TrevorS

iTrader: (1)

Yes, a true overdrive would be nice. It's not as though the engine lacks the power to support it. I see those posted gear ratios include two genuine overdrives -- nice !

CIONIDE

iTrader: (1)

Your 5-speed manual has overdrive ratios also, but the axle ratio is so high that it is basically negated. From another thread:

TrevorS

iTrader: (1)

Urgh -- done in by the axle ratio !

streetxdreamer

6 speed auto would be nice

cTek

any word on the 5speed manual to 6speed manual swap for the xb2 yet?

clifsmith

After my warranty period is up, if there is anything I want to do more on my 2011 box, it is to swap out this 4spd auto (U241E) for a 6spd auto (U760E). Stock 4spd, turns way too many RPMs on the highway in comparison to the vehicles of today. Shift smoothness and much better fuel economy should result. I emailed Descendant and they did not know anything about a auto trans (4spd to 6spd) "swap Kit" for the xb2. I want to keep the 2.4 engine and just want to swap tranny. I realize the ECU change would be required since there are 2 extra gears, but this ECU would have to be from a car with the 2.5 since the U760E was never built for the 2.4. So if the 2.5 is a completely different engine than the 2.4, then how can this new ECU work with the 2.4 and U760E combo? Any ideas how this will work out?

Any other alternatives (like axle gear swap to taller gear) for me to get better highway mileage?