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View Full Version : Potential 6 speed in a 1st Gen tC?



AceStyle
04-22-2010, 09:20 PM
So Being a nerd, and knowing how Toyota likes to use interchangeable parts... I was curious and decided to do a little research.

Our 2AZ-FE is paired with a U241E automatic transmission.

The 2009-2010 Rav4 4cyl has the 2AR-FE (2.5l in 2nd Gen tC) paired with the same U241E auto transmission.

The 2AR-FE is paired with a 6 speed manual and a 6 speed automatic in the 2011 tC.

So this means that it will potentially be possible to put the new 6 speed transmission on 2005-2010 2.4l Engine. Of course there are still other things to factor that may interfere with it or need heavy modification... but it might be a good option to explore for those that already have heavily built 2.4l motors... or people that just like to do Frankenstein cars!

Well, I just thought I'd share my logic

Soldier
04-22-2010, 09:41 PM
this is a good thought...I was also wondering the same thing...but the other thing that popped in my head was..what if the gen2 frame is similar and you can just drop the gen2 motor in the gen1 or if mount kits might be possibly produces in the future..id def upgrade my engine along with the tranny

jlopinfl2
04-22-2010, 10:03 PM
I been thinking about that since I heard it was a 6spd :lol: I hope it just drops in. I could use some longer gears, and so could every other SC/Turboed tC. Maybe we can probably use a custom tranny mount and a plate to bolt into our 2azfe blocks and mount the tranny to the plate, if it doesn't drop in. Like the whole H2B thing done on Hondas, when they take b-series trannys and mount them onto H22's. If your willing to spend money it has to be possible.

Aurora
04-22-2010, 10:14 PM
^ If that was the case, I'd upgrade the engine and tranny. While I was at it, I'd swap the tranny from an automatic to a stick if I could encorporate some paddle shifters.

You know, while you're at it...wonder if you could do a RWD conversion at the same time.

AceStyle
04-22-2010, 11:05 PM
i sent you a pm on the paddle shifting... it wont work with the 6 speed manual... but you could do it with the auto and a transmission controller.

there is still too much we don't know about the new tC to be able to determine how easy/difficult it will be. This could be as simple as dropping it in and bolting it up.... or it could be extremely difficult and require intense modification.

jlopinfl2
04-22-2010, 11:10 PM
I'm sure all that could be done. But the cost would be way more than a tranny, plate, and mount. The point of swapping the 6spd would be to keep the the modded 2.4. You can build your block with the price you'd waste on a whole motor and have way better than just a 2.5.

Aurora
04-23-2010, 12:50 AM
I'm sure all that could be done. But the cost would be way more than a tranny, plate, and mount. The point of swapping the 6spd would be to keep the the modded 2.4. You can build your block with the price you'd waste on a whole motor and have way better than just a 2.5.

I don't want the new tC engine, that doesn't interest me. The 6 speed tranny is more than enough motivation.

jlopinfl2
04-23-2010, 01:19 AM
I don't want the new tC engine, that doesn't interest me. The 6 speed tranny is more than enough motivation.

Well hopefully they'll make our lives easier and it will bolt right up! Then I'll do this dance right here :Vache04: lol

Soldier
04-23-2010, 09:42 AM
well id want the new engine if ima get the trann, might as well...more HP more displacement...why not jus go all out:)

jlopinfl2
04-23-2010, 10:46 AM
Well if you're not turboed or supercharged doing the whole motor may not be a bad idea since there are no major mods made. Just the swap would be 20hp more, which you'd need quite a few mods for that extra power alone. Most people with forced induction would probably just want the tranny since there's a good amount of money invested into the 2az-fe already and we can just build our motors with the money we'd spend getting the new motor.

WooKie
04-23-2010, 11:33 AM
mhhhhhhhhhhhhhh interesting hehehe

AceStyle
04-23-2010, 12:00 PM
Well the 2AR-FE (2.5l) has a compression ratio of 10.4-1

While our 2AZ-FE (2.4l) has a 9.6-1 (05-06) and a 9.8-1(07-10)

So if your wanting to boost, you can put more boost into the 2AZ-FE.

In reality, there isn't that much difference in power between a 2.5l and a 2.4l... what you will get in the 2AR-FE is a higher compression ratio, Dual VVTI, electronic power steering and a few other newer technology items.

Aurora
04-23-2010, 03:56 PM
^ Sounds good to me

Human Collapse
04-23-2010, 08:24 PM
Don't forget that there is a great possibility that the 2AR-FE will share a block with the motor in the Venza. You can do a head transplant to make it a 2.7L.

Human Collapse
04-23-2010, 08:30 PM
Never mind. It wouldn't be worth the trouble. The Venza only gets 182HP and 182 ft/lbs of torque.

Aurora
04-23-2010, 09:12 PM
What about a Lexus V6 engine? I know there is a Lexus model that has the same chasis as the tC...same moonroof too!

TheFantasticG
04-24-2010, 07:37 AM
Eh. All these options... not cost effective.

If you plan on going with any of the afore mentioned quests, plan on having at least $10k in the bank.

That is the reason why you never hear of anyone trying these ideas. No one has or wants to dump the kind of money it takes to get it working right.

So until you get sponsored by a multi-million dollar company that will pay for everything, all this is just wishful thinking. Unless you sell a kidney or win the lottery.

Aurora
04-25-2010, 12:57 AM
^ Half the stuff people talk about is wishful thinking, but with all the ideas that float around, it inspires moders to further themselves.

t_urbo_C_harged
04-25-2010, 11:35 AM
I am working on a transmission project right now actually. For all those wanting/needing longer gears, then a final drive swap out of a toyota camry transmission will be suffice. That is what I am about to do in the near future, and from everything I have researched/figured, I'm 99% positive it would work. Also 5th gear is different as well, so you could do just a 5th gear swap, or do both the final drive and 5th gear swap, or just the final drive swap. I am going to try doing just the final drive swap that way I keep the closer gear ratio between 4th and 5th that the tc has.

TC Gear Ratio's (6500 Redline)
1st = 3.538 (31.7mph)
2nd = 2.045 (54.9mph)
3rd = 1.333 (84.2mph)
4th = 0.972 (115.5mph)
5th = 0.775 (144.9mph) 70mph = about 3200rpm
Camry 5th with tc FD = (153.6mph) 70mph = about 3000rpm
FD = 4.24

Camry Gear Ratio's (same)
1st = 3.538 (34.1mph)
2nd = 2.045 (59mph)
3rd = 1.333 (90.6mph)
4th = 0.972 (124.2mph)
5th = 0.731 (165.1mph) 70mph = about 2800rpm
tc 5th with Camry FD = (155.8mph) 70mph = about 2900rpm
FD = 3.944

This is all figured with factory wheel/tire size. If you had a built motor running up to 8krpm, here are the numbers with final drive swap:
1st = 42mph
2nd = 72.6mph
3rd = 111.5mph
4th = 152.8mph
tC 5th = 191.7mph
Camry 5th = 203.2mph

Here is what I used to calculate quickly:
http://home.netcom.com/~sgalaba/mph.htm

hope this helps, and I hope to have all of the info/swap completed mid summer.

The 1 2 Die 4
04-25-2010, 12:46 PM
Im going to do a swap at some point in the future.. More horses, 6 gears and RWD or AWD.. Cost is not an issue.. Im thinking that if I have the same amount of money that I spent on the car in the first place, $24k, that should be enough to make a supercar out of my tC!!!

I was debating the Avensis swap (tranny and motor) then doing a little turbo work..

I really just want to buy Tanner Foust's car.. lmao..

infidel_inside
04-25-2010, 03:06 PM
Well the 2AR-FE (2.5l) has a compression ratio of 10.4-1

While our 2AZ-FE (2.4l) has a 9.6-1 (05-06) and a 9.8-1(07-10)

So if your wanting to boost, you can put more boost into the 2AZ-FE.

In reality, there isn't that much difference in power between a 2.5l and a 2.4l... what you will get in the 2AR-FE is a higher compression ratio, Dual VVTI, electronic power steering and a few other newer technology items.


stock compression isn't that big of a deal if your modding the engine and boosting

Aurora
04-27-2010, 05:58 AM
Im going to do a swap at some point in the future.. More horses, 6 gears and RWD or AWD.. Im thinking that if I have the same amount of money that I spent on the car in the first place, $24k, that should be enough to make a supercar out of my tC!!!

Nice, that's what I'm talking about! Rock it till you can't no more.:clap: