xB final drive swap - Page 2 - Toyota Yaris Forums

Midnight Drifter · 08-24-2010, 04:33 PM

It's bad enough that Yaris has a "4 1/2" gear with a marginal drop from 4th to 5th, the last thing I need is to be pulling even more RPM's at 75 MPH...

...no thanks.

why? · 08-24-2010, 06:36 PM

Quote:

Originally Posted by Midnight Drifter

It's bad enough that Yaris has a "4 1/2" gear with a marginal drop from 4th to 5th, the last thing I need is to be pulling even more RPM's at 75 MPH...

...no thanks.

I hear you, I'd be tempted to go the other way, or even find a 6 speed box that could help turn the revs down.

But then again, I am not going to race it.

cali yaris · 08-24-2010, 07:17 PM

Quote:

the last thing I need is to be pulling even more RPM's at 75 MPH...

That's the first thing I need.

Bluevitz-rs · 08-25-2010, 10:36 AM

With the 6 speed in my car I turn 2950 RPM (aprox 350 more than the 5 speed) @ 100km/h (62mph) and I'm getting better fuel economy than with my 5 speed.

I average 700+km on 40-42L of fuel. With the 5 speed I'd average 650-680km on the same fuel.

Jason@SportsCar · 08-25-2010, 02:16 PM

Quote:

Originally Posted by why?

I hear you, I'd be tempted to go the other way, or even find a 6 speed box that could help turn the revs down.

But then again, I am not going to race it.

A 6spd would actually do the opposite. A 6spd is essentially a close-ratio gear box, and 6th gear is only fractionally taller than 5th in a 5spd. And in nearly every case Toyota has outfitted the 6spd with a shorter final drive, which actually means you are spinning the engine more with the 6spd.

If you want to drop your revs put on some taller tires, or drive slower.

Morgan · 08-25-2010, 08:56 PM

Good luck...

johnny_vitz · 09-09-2010, 01:08 AM

Quote:

Originally Posted by Jason@SportsCar

If anyone is interested, we have done the xB final drive (4.312) swap in our Yaris, fits and works perfectly.

Parts needed from Toyota/Scion:
33321-52110, output shaft
41221-52270, ring gear
90105-11040, ring gear bolts (8)

Depending on mileage you may also want to replace bearings and seals, but you don't need to source those from Toyota.

Do you know if the 5 speed trans from an xb will bolt into an echo? And if so, I could use the 8 bolt LSD in it?

Tamago · 09-11-2010, 07:11 PM

Quote:

Originally Posted by johnny_vitz

Do you know if the 5 speed trans from an xb will bolt into an echo? And if so, I could use the 8 bolt LSD in it?

yes, the xa/xb/echo share transmission mounts. the echo trans is a bit longer, so a swap from an xB to echo would yield slightly more room on the end. the xB comes with an 8 bolt differential, so i'm not sure why you'd be concerned with using an 8 bolt lsd in your 8 bolt transaxle ?

rob323 · 09-12-2010, 07:32 PM

For anyone racing their car up and down hills and around corners, the final drive change is the best value for money performance increase I reckon you can do (short of forced induction, if allowed).

The difference for drivers of Echo's is phenomenal. I have a TRD 4.7:1 final drive in my car and there is a steep hill near me that I used to only be able to do about 60kph up it. Basically as soon as I changed into 2nd the gear, the engine didn't have enough power to accelerate and my speed would drop. With the new final drive, I am still slowly accelerating at 80 kph by the time I reach the top of the hill.

Bluevitz-rs · 09-12-2010, 07:36 PM

Rob, you need a 1.5 in that thing

rob323 · 09-12-2010, 08:32 PM

Yes, that's all fine but it throws me up into the 1401-1600cc class where there is no way I can compete against mivec mirages and Vtec civics.

Bluevitz-rs · 09-12-2010, 08:42 PM

^ Oh, gotcha

why? · 09-12-2010, 08:55 PM

Quote:

Originally Posted by Jason@SportsCar

A 6spd would actually do the opposite. A 6spd is essentially a close-ratio gear box, and 6th gear is only fractionally taller than 5th in a 5spd. And in nearly every case Toyota has outfitted the 6spd with a shorter final drive, which actually means you are spinning the engine more with the 6spd.

If you want to drop your revs put on some taller tires, or drive slower.

Well I knew a 6 speed would be closer ratio, but I hate the 4th to 5th gear change in the yaris, it is almost worthless. If the 6 speeds do have a shorter final drive, you would be right, and the last thing the yaris needs is to be revving even higher at normal highway speeds.

So if I ever have enough money or time I'd need to look outside of Toyota, and that would mean crazy money. Oh well.

Bluevitz-rs · 09-12-2010, 10:12 PM

Just change out the fifth gear for the .725 in the C60/C160

johnny_vitz · 09-12-2010, 11:38 PM

Quote:

Originally Posted by Tamago

yes, the xa/xb/echo share transmission mounts. the echo trans is a bit longer, so a swap from an xB to echo would yield slightly more room on the end. the xB comes with an 8 bolt differential, so i'm not sure why you'd be concerned with using an 8 bolt lsd in your 8 bolt transaxle ?

The 8 bolt is just a lot more common and easier to find (than the echo's 6 bolt). I just wanted to make sure the xb trans would fit in so I could just have the xb trans with an LSD ready for spring to go in...

With a new clutch and flywheel. Thanks for the info!

47_MasoN_47 · 09-13-2010, 11:37 AM

My biggest complaint about my Yaris gearing (automatic) is the 3rd gear. Mine accelerates fine in 1st and 2nd, then when 3rd comes along it's such a long gear that acceleration drops rapidly and people often start passing me. Also, it's annoying that sometimes the car will shift into 3rd when going uphill and then I'll actually start going slower until it figures out that it should have stayed in 2nd. I find myself manually shifting the gears when going uphill because of this. If I could have bought a manual to begin with I would have, but I could only find 1 manual sedan in the whole southeast (within my dealer's trading range) and it was as base model as you can get :(

Tamago · 09-13-2010, 06:40 PM

Quote:

Originally Posted by 47_MasoN_47

My biggest complaint about my Yaris gearing (automatic) is the 3rd gear. Mine accelerates fine in 1st and 2nd, then when 3rd comes along it's such a long gear that acceleration drops rapidly and people often start passing me. Also, it's annoying that sometimes the car will shift into 3rd when going uphill and then I'll actually start going slower until it figures out that it should have stayed in 2nd. I find myself manually shifting the gears when going uphill because of this. If I could have bought a manual to begin with I would have, but I could only find 1 manual sedan in the whole southeast (within my dealer's trading range) and it was as base model as you can get :(

that sounds like an engine problem to me ;) time for more power!

Niner · 10-22-2010, 09:09 PM

If anyone's interested, I've got a Scion xA and want to do the reverse swap - put a Yaris final drive in it. I'm more interested in gas than speed. Used to have a Yaris but lost it in a garage fire (and just discovered I still have a login here).

Not sure how we'd work out the swap (I have a truck, but driving that for very long defeats the purpose of saving fuel). Any takers in Michigan near Lansing or Detroit would be a much better option, or anyone that has the engine out already and don't need the shaft back immediately (with escrow cash or whatever needed so I don't sit on my butt too long.)

Henry

08-25-2010, 08:56 PM	#24
Morgan View User's Garage Drives: 07 MM LB Join Date: Oct 2008 Location: PCB, FL Posts: 504	Good luck... __________________

09-13-2010, 11:37 AM	#34
47_MasoN_47 What I thought I'd do was View User's Garage Drives: 09 Yaris Sedan Join Date: Aug 2009 Location: Northwest Alabama Posts: 1,140	My biggest complaint about my Yaris gearing (automatic) is the 3rd gear. Mine accelerates fine in 1st and 2nd, then when 3rd comes along it's such a long gear that acceleration drops rapidly and people often start passing me. Also, it's annoying that sometimes the car will shift into 3rd when going uphill and then I'll actually start going slower until it figures out that it should have stayed in 2nd. I find myself manually shifting the gears when going uphill because of this. If I could have bought a manual to begin with I would have, but I could only find 1 manual sedan in the whole southeast (within my dealer's trading range) and it was as base model as you can get :( __________________ My Nissan Hardbody (D21) 4x4 build log Check out my YouTube channel (mostly shooting) - http://www.youtube.com/user/47MasoN47

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08-24-2010, 04:33 PM	#19
Midnight Drifter Going Retro Drives: '09 Tacoma \| '90 Tercel Join Date: Aug 2010 Location: Monroe, NJ Posts: 148	It's bad enough that Yaris has a "4 1/2" gear with a marginal drop from 4th to 5th, the last thing I need is to be pulling even more RPM's at 75 MPH... ...no thanks.

08-25-2010, 10:36 AM	#22
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	With the 6 speed in my car I turn 2950 RPM (aprox 350 more than the 5 speed) @ 100km/h (62mph) and I'm getting better fuel economy than with my 5 speed. I average 700+km on 40-42L of fuel. With the 5 speed I'd average 650-680km on the same fuel.

09-12-2010, 07:32 PM	#27
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	For anyone racing their car up and down hills and around corners, the final drive change is the best value for money performance increase I reckon you can do (short of forced induction, if allowed). The difference for drivers of Echo's is phenomenal. I have a TRD 4.7:1 final drive in my car and there is a steep hill near me that I used to only be able to do about 60kph up it. Basically as soon as I changed into 2nd the gear, the engine didn't have enough power to accelerate and my speed would drop. With the new final drive, I am still slowly accelerating at 80 kph by the time I reach the top of the hill.

09-12-2010, 07:36 PM	#28
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	Rob, you need a 1.5 in that thing

09-12-2010, 08:32 PM	#29
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	Yes, that's all fine but it throws me up into the 1401-1600cc class where there is no way I can compete against mivec mirages and Vtec civics.

09-12-2010, 08:42 PM	#30
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	^ Oh, gotcha

09-12-2010, 10:12 PM	#32
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	Just change out the fifth gear for the .725 in the C60/C160

10-22-2010, 09:09 PM	#36
Niner Drives: Silver 07 Yaris Sedan Join Date: Jul 2007 Location: Ovid MI Posts: 3	If anyone's interested, I've got a Scion xA and want to do the reverse swap - put a Yaris final drive in it. I'm more interested in gas than speed. Used to have a Yaris but lost it in a garage fire (and just discovered I still have a login here). Not sure how we'd work out the swap (I have a truck, but driving that for very long defeats the purpose of saving fuel). Any takers in Michigan near Lansing or Detroit would be a much better option, or anyone that has the engine out already and don't need the shaft back immediately (with escrow cash or whatever needed so I don't sit on my butt too long.) Henry