Stay tuned - Page 50 - Toyota Yaris Forums

Jeff@MicroImage · 02-08-2012, 03:41 PM

Are you still running VVT-i in this car? Does your tuner/management have control over the that?

Jason@SportsCar · 02-08-2012, 03:48 PM

Quote:

Originally Posted by Jeff@MicroImage

Are you still running VVT-i in this car? Does your tuner/management have control over the that?

Yes, still running it and the AEM controls it.

Jeff@MicroImage · 02-08-2012, 04:01 PM

Quote:

Originally Posted by Jason@SportsCar

Yes, still running it and the AEM controls it.

Great results! I'm real excited to see that these actually work. I'd be curious to see if any top end gains or benefit from disabling VVT-i and running set or manually adjustable cam gears. Might loose more torque though...

Can't wait to see what the turbo spec Jun cams do for boosted cars

Jason@SportsCar · 02-08-2012, 04:04 PM

Quote:

Originally Posted by Jeff@MicroImage

Great results! I'm real excited to see that these actually work. I'd be curious to see if any top end gains or benefit from disabling VVT-i and running set or manually adjustable cam gears. Might loose more torque though...

Can't wait to see what the turbo spec Jun cams do for boosted cars

The low end gets really weak with no VVT-i control.

KSIbucky · 02-17-2012, 02:49 AM

From runoffs

CrankyOldMan · 03-13-2012, 10:45 PM

Wow, I'm surprised to hear that there's so much involved in fitting those gears. The C-56 gears went in without much fuss, but I'm stalled on funding for replacement parts and the LSD.

Jason@SportsCar · 03-14-2012, 02:31 PM

Quote:

Originally Posted by CrankyOldMan

Wow, I'm surprised to hear that there's so much involved in fitting those gears. The C-56 gears went in without much fuss, but I'm stalled on funding for replacement parts and the LSD.

It is odd, these were supposedly built for the C56. Are you pulling parts out of a C56 A or B? Could be the difference.

Turns out the gear itself is not to wide, but the collar at its base, that combined with the Yaris synchro made it bind up. And it is only the 3rd and 4th on the input side that is the challenge. They take a little bit off the collar and install the Celica/MR-S synchro its supposed to fit.

Fingers crossed.

racerb · 03-14-2012, 10:46 PM

Back in my Honda racing days this guy was the man for alternate gear sets, he can probebly help you out if need be. He is a multi-time SCCA Champ and really knows a thing or two about gearboxes.
http://www.housemanautosport.com/

racerb

Jason@SportsCar · 03-14-2012, 11:44 PM

Quote:

Originally Posted by racerb

Back in my Honda racing days this guy was the man for alternate gear sets, he can probebly help you out if need be. He is a multi-time SCCA Champ and really knows a thing or two about gearboxes.
http://www.housemanautosport.com/

racerb

He was the first person I talked to when we started looking for gears two years ago. He was willing to make a custom final drive, but we found the xB gear fit at a fraction of the cost. He had no interest in doing the dog engagement trans that I wanted.

CrankyOldMan · 03-15-2012, 08:18 AM

Quote:

Originally Posted by Jason@SportsCar

It is odd, these were supposedly built for the C56. Are you pulling parts out of a C56 A or B? Could be the difference.

Turns out the gear itself is not to wide, but the collar at its base, that combined with the Yaris synchro made it bind up. And it is only the 3rd and 4th on the input side that is the challenge. They take a little bit off the collar and install the Celica/MR-S synchro its supposed to fit.

Fingers crossed.

I'm afraid you've got me stumped on that one. I didn't realize there were two C56 variants, or at least that there were significant internal differences between the front and rear mounted versions.

racerb · 03-16-2012, 10:59 PM

Quote:

Originally Posted by CrankyOldMan

I'm afraid you've got me stumped on that one. I didn't realize there were two C56 variants, or at least that there were significant internal differences between the front and rear mounted versions.

Toyota must have a big range of different gearbox versions, my S-53 is fairly common, but I ended up with a JDM box and can't find syncros or shims to fit it! Would love to find an alternate final drive, the 4.18 is just not working for our longer tracks here in the East.

racerb

Jason@SportsCar · 03-16-2012, 11:25 PM

Quote:

Originally Posted by CrankyOldMan

I'm afraid you've got me stumped on that one. I didn't realize there were two C56 variants, or at least that there were significant internal differences between the front and rear mounted versions.

C56A open diff
C56B LSD

You may actually have the same problem we did and not know it yet if you have not put it back together. You wont know until you jam it all in the case and measure the drag when you spin it.

CrankyOldMan · 03-17-2012, 12:15 AM

It's definitely a C56A then, as it's an open diff. The assembly goes together at the moment, but I haven't checked the torque yet. I have to replace the output shaft inner bearing (the one in the bell housing) because the C56 has an inner race on the roller bearing, whereas the C50/C59 doesn't, and the groove where the snap ring holds the inner race on the shaft sits right in the middle of the rollers. I'm assuming that you weren't able to get the torque set properly with any of the shims, which prompted you to investigate?

Bluevitz-rs · 03-27-2012, 12:39 AM

Do you know what the new ratios are?

CrankyOldMan · 03-27-2012, 08:48 AM

Quote:

Originally Posted by CrankyOldMan

I don't want to spoil the surprise, but I think I've cracked the source and specs for these. Could you confirm if I have the specs right?

3rd - 28:19 (1.474:1)
4th - 29:24 (1.208:1)
5th - 25:26 (0.962:1)

Quote:

Originally Posted by Bluevitz-rs

Do you know what the new ratios are?

Jason said that he hadn't counted the teeth on them, but I'd be willing to bet that these are in fact the new ratios. 1st and 2nd are integrated into the input shaft, so he's stuck with 3.545:1 and 1.904:1 respectively.

Jason@SportsCar · 03-27-2012, 01:18 PM

Quote:

Originally Posted by CrankyOldMan

Jason said that he hadn't counted the teeth on them, but I'd be willing to bet that these are in fact the new ratios. 1st and 2nd are integrated into the input shaft, so he's stuck with 3.545:1 and 1.904:1 respectively.

I did not count the teeth, but Jeff @ MI did, and they were not the same counts as what you have found on the OE parts you pulled from the other boxes.

Yes, 1st and 2nd stay the same, and I would not want them any shorter. With our final drive and tire size 1st is only useful for getting on the trailer. With 2nd good only to 62mph, it is only used on very tight turns, any shorter and we would have to use 3rd for the slow stuff.

The new ratios are:
3rd 1.474 Kaaz
4th 1.208 Kaaz
5th 0.961 Kaaz

With this setup on most tracks we will use four gears VS only two or three with the current setup, offering much better acceleration. We will see 120mph in 5th at our redline, perfect for Road America.

thebarber · 03-27-2012, 03:44 PM

just got my new issue of car and driver today....they did a b-segment racer comparo....kia, honda, mazda, mini....where was your toyota?

ROCKLAND TOYOTA · 03-27-2012, 04:27 PM

Quote:

Originally Posted by thebarber

just got my new issue of car and driver today....they did a b-segment racer comparo....kia, honda, mazda, mini....where was your toyota?

late comer i quess.....

02-08-2012, 03:41 PM	#1
Jeff@MicroImage "Know it all" Drives: Lancia Delta Integrale Join Date: Jan 2012 Location: SFV, CA Posts: 77	Are you still running VVT-i in this car? Does your tuner/management have control over the that? __________________ www.microimageonline.com

03-14-2012, 10:46 PM	#8
racerb View User's Garage Drives: 2010 Yaris HB Blazin' Blue Join Date: Feb 2011 Location: Leland, NC Posts: 444	Back in my Honda racing days this guy was the man for alternate gear sets, he can probebly help you out if need be. He is a multi-time SCCA Champ and really knows a thing or two about gearboxes. http://www.housemanautosport.com/ racerb __________________ racerb '86 Celica GT '87 Celica GT-S '98 Rav4L '01 Tundra SR5

03-27-2012, 03:44 PM	#17
thebarber daily driver View User's Garage Drives: the #wrecho Join Date: Jun 2006 Location: Grand Rapids, MI Posts: 5,877	just got my new issue of car and driver today....they did a b-segment racer comparo....kia, honda, mazda, mini....where was your toyota? __________________

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03-13-2012, 10:45 PM	#6
CrankyOldMan 2ZR swap. DO IT! Ask how! View User's Garage Drives: 09 Meteoric Metallic HB Join Date: Feb 2011 Location: West Michigan Posts: 2,333	Wow, I'm surprised to hear that there's so much involved in fitting those gears. The C-56 gears went in without much fuss, but I'm stalled on funding for replacement parts and the LSD.

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CrankyOldMan 2ZR swap. DO IT! Ask how! View User's Garage Drives: 09 Meteoric Metallic HB Join Date: Feb 2011 Location: West Michigan Posts: 2,333	It's definitely a C56A then, as it's an open diff. The assembly goes together at the moment, but I haven't checked the torque yet. I have to replace the output shaft inner bearing (the one in the bell housing) because the C56 has an inner race on the roller bearing, whereas the C50/C59 doesn't, and the groove where the snap ring holds the inner race on the shaft sits right in the middle of the rollers. I'm assuming that you weren't able to get the torque set properly with any of the shims, which prompted you to investigate?

03-27-2012, 12:39 AM	#14
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	Do you know what the new ratios are?