Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
 

 


 
Go Back   Toyota Yaris Forums - Ultimate Yaris Enthusiast Site > Technical Forums > Performance Modifications
  The Tire Rack

Reply
 
Thread Tools Display Modes
Old 12-23-2017, 02:45 PM   #73
tmontague
 
tmontague's Avatar
 
Drives: '08 2zr swapped Vios M/T
Join Date: Oct 2012
Location: Hamilton Ont.
Posts: 1,894
LSD and Trans update

I've been able to drive my car in the snow quite a bit in the past month or so and I feel like it's been enough to give a good quality update on my experience. Keep in mind this is my first time driving a car with an LSD.

I have 4 winter tires (more of an ice tire) that are relatively new as well. There seem to be two camps on line in regards to driving an LSD in snow: 1. It will help increase traction by giving you a true 2wd car instead of the realistic 1wd that open diffs give you once they slip. 2. They actually make snow/ice driving worse.

To me #1 always seemed to make more sense. In this case I'm talking about a clutch type lsd, a torsen type will not do a whole lot when your one tire is free wheeling with no traction. A clutch type lsd will lock up regardless if one wheel is free spinning.

After a month of driving in snow the only time I can see an LSD being dangerous is under hard acceleration on slick conditions. This still entirely depends on driver input, so not actually the fault of the LSD but rather the driver. If one decides to give too much throttle during cornering in icy conditions then since the axles are locked causing both tires to spin you will under steer much much more than with an open diff. This is due to both tires losing traction and not just one. This leaves you with zero traction on the front which leads you to under steer. This is easily controlled by not giving too much throttle on corners or by backing off the throttle if you start to slide and you will regain control.

In deep snow or slippery conditions the grip has improved drastically. Instead of hearing the right wheel spin up and the car barely inch forward, I now notice much less wheel spin and the car pulls forward consistently. Not like an awd obviously but it is more consistent in the progress forward.

Performance wise (as best as I can with snow tires on) torque steer is essentially zero. I can go WOT (now with much less wheel spin) and the car doesn't pull left or right. The steering wheel under throttle actually has a tendency to want to self correct back to neutral, quite powerfully actually.

Overall the car feel more planted, firm and in control, even in snow.

As for the bad:

I still have a transmission clunk that seems to happen on left turns when giving a decent amount of throttle. This does not sound or feel like axle bind, that problem was fixed with swapping in Tercel axle. It sounds exactly like the transmission hitting the subframe. This is likely due to the LSD putting extra torque out from the transmission to both wheel leading to different forces on the mounts causing excess movement.

My plan to remedy this is to get a dogbone mount machined from solid aluminum which should severely limit movement.

Overall I'm really pleased with the LSD, it really transforms the car into more of a purpose built "sports car". My gas mileage is now at about 7.1L/100km up from 6.3L/100km when I originally put the 2zr in Lfwiw it was at 5.8L/100 km with my 1nz). That said I am also on winter gas and snow tires so realistically I am probably sitting at 6.7L/100km with the 4.3 FD. The only time the LSD makes a lot of noise is when the trans fluid is still cold. Once it heats up the LSD is very quiet.
__________________
I like to drive a slow car fast...
tmontague is offline   Reply With Quote
Old 12-23-2017, 03:10 PM   #74
ArmstrongRacing
Data doesn't lie
 
ArmstrongRacing's Avatar
 
Drives: That Scrappy 2zrVios
Join Date: Oct 2014
Location: San Diego
Posts: 515
I'm happy to hear the trans is proving its worth, and that you understand (and have shared) how to properly use the throttle. haha

I still dont know why your car continues to make clunking noises when mine did not. I still have a silent drivetrain even after swapping to the 6 speed. I need to buy another LSD at some point, maybe Ill try a torsion this time so I can compare
ArmstrongRacing is offline   Reply With Quote
Old 12-23-2017, 04:33 PM   #75
tmontague
 
tmontague's Avatar
 
Drives: '08 2zr swapped Vios M/T
Join Date: Oct 2012
Location: Hamilton Ont.
Posts: 1,894
I have no idea either, Toyota was obviously aware of the potential as they made the xd left side axle slightly shorter but I can't explain why you never seemed to have the issue. My car was never in an accident that I'm aware of and there is no evidence to ever say it was.

The noise/banging I'm hearing now is simply the war of the trans hitting the subframe. My only guess is I prematurely wore out my fluid filled passenger side mount from moving the engine up and down with it still connected when removing my trans twice. However the doggone mostly is the only mount controlling that engine movement and mine is fully poly filled.

I'm hoping the solid billet doggone will fix the issue, if not it isn't that bad and shouldn't be an issue on the track. Problem is the xd is such a rare car that there is little to no aftermarket for it other than show parts.

As for the torsen lsd, I've never used one but I was originally conceded about dding a clutch type based on online comments. After having daily'd it for the past little while, it is no issue at all. Most comments online is the same comment regurgitated, very few people spoke from experience.

If costs were equal, I'd go clutch type every time. Never have to worry about lifting a wheel or having minimal grip on the inside causing it to act like an open. Yes, eventually the clutches will need to be replaced but according to many users online the cusco 1 way lsd last a darn long time. Not many draw backs of you like to hear your car and feel everything. If you want oem comfort and silence than torsen is a great compromise.

I've been very please this far
__________________
I like to drive a slow car fast...
tmontague is offline   Reply With Quote
Old 01-25-2018, 02:45 PM   #76
tmontague
 
tmontague's Avatar
 
Drives: '08 2zr swapped Vios M/T
Join Date: Oct 2012
Location: Hamilton Ont.
Posts: 1,894
New summer rubber!

Finally picked up my new summer tires and had them mounted to my new Konig Hypergram 15x7.5
tires are 195/55 r15 and are as wide as most 205's
treadwear is 340







can't wait for spring to get these things on the road!
__________________
I like to drive a slow car fast...
tmontague is offline   Reply With Quote
Old 01-25-2018, 06:27 PM   #77
atomic_hoji
 
Drives: 2018 Yaris SE 5MT
Join Date: Aug 2017
Location: Kincardine, ON, Canada
Posts: 60
Nice!

Congrats on the beauty wheel and tire setup. Should look slick man.

-- Adam
atomic_hoji is offline   Reply With Quote
Old 01-27-2018, 04:20 PM   #78
Jeanseb29
 
Drives: Toyota Yaris RS 2011 (HB)
Join Date: Sep 2016
Location: Gatineau (Ottawa), Canada
Posts: 17
What brand of tires did you choose Tmontague? I can't tell from the photos... I'm currently looking for summer tires with same dimensions (195/55r15) for a set of Rota circuit 8 (15x6.5) I found on Kijiji before winter. I might go with Yoko s-drive but still not decided yet.

Sent from my SM-N910W8 using Tapatalk
Jeanseb29 is offline   Reply With Quote
Old 01-27-2018, 06:03 PM   #79
deng
Radical Dreamer
 
deng's Avatar
 
Drives: off of T9
Join Date: Jun 2017
Location: No Bueno Park, CA
Posts: 123
The hypergrams look great!

Jean, those are BF Goodrich G Force Sport 2s.
__________________
If you lack driver skill, add horsepower.
deng is offline   Reply With Quote
Old 01-27-2018, 11:35 PM   #80
tmontague
 
tmontague's Avatar
 
Drives: '08 2zr swapped Vios M/T
Join Date: Oct 2012
Location: Hamilton Ont.
Posts: 1,894
Yup, Deng is correct bfg g force sport comp 2's. I forgot to put that in my post. In any other tire I would have went 205 but these bad boys are wide.

I chose they over any other UHP tire as we get a decent amount of rain where I live. I was tired of having to limp my Yaris around whenever it rained so I wanted a tire that performed well in the wet. The reviews on the sport comp 2's are some of the best and excellent in the wet. Made sense especially with their price. Found them on eBay for approx $64 a corner. Stupid cheap and better performing than many others.
__________________
I like to drive a slow car fast...
tmontague is offline   Reply With Quote
Old 01-28-2018, 11:29 PM   #81
thebarber
daily driver
 
thebarber's Avatar
 
Drives: 04 echo RS
Join Date: Jun 2006
Location: Grand Rapids, MI
Posts: 5,662
Nice!
__________________
thebarber is offline   Reply With Quote
Old 01-29-2018, 09:20 AM   #82
malibuguy
Obsessed with 1.5L
 
Drives: '10 PW Yaris Sedan
Join Date: Feb 2011
Location: Westminster, MD
Posts: 857
64 a piece hotdamn
__________________
-Greg...the Exhaust Freak.

-'10 PW sedan 106whp/110wtq, full exhaust, suspension goodies
-'82 Malibu, 1uzfe swap
-97 Tercel coupe, 1nzfe swap coming soon
malibuguy is offline   Reply With Quote
Old 01-29-2018, 11:52 AM   #83
tmontague
 
tmontague's Avatar
 
Drives: '08 2zr swapped Vios M/T
Join Date: Oct 2012
Location: Hamilton Ont.
Posts: 1,894
Quote:
Originally Posted by malibuguy View Post
64 a piece hotdamn
Yup stupid good price. This was slightly cheaper than DTD's latest sale price. With mounting and taxes at the border I ended up paying $370 CAD! The cheapest I could find them in Canada all in was $600 CAD.

The reason why they were marked down cheaper is likely due to the fact that they were manufactured midway through 2015. This shouldn't be an issue for me as this tire probably won't last more than 3 years before it's down to the wear bars. This puts it at 6 years old which is when I ideally like to get new tires (if I have the cash).

If I ever get to the track and it's raining I plan on using these as well as for any autox I do this year. My slicks take too long to hear up for autox and are downright greasy when cold.
__________________
I like to drive a slow car fast...
tmontague is offline   Reply With Quote
Old 01-29-2018, 12:24 PM   #84
thebarber
daily driver
 
thebarber's Avatar
 
Drives: 04 echo RS
Join Date: Jun 2006
Location: Grand Rapids, MI
Posts: 5,662
nothing wrong with new old stock
__________________
thebarber is offline   Reply With Quote
Old 01-29-2018, 01:03 PM   #85
tmontague
 
tmontague's Avatar
 
Drives: '08 2zr swapped Vios M/T
Join Date: Oct 2012
Location: Hamilton Ont.
Posts: 1,894
Quote:
Originally Posted by thebarber View Post
nothing wrong with new old stock
Absolutely not as long as they aren't a decade old and dry rotted lol. 2 and a half years is no problem and a faster wearing tire
__________________
I like to drive a slow car fast...
tmontague is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need 07 Sedan Tail Light wiring info ASAP atebit General Yaris / Vitz Discussion 3 09-07-2013 06:48 PM
NEWS: TOYOTA REVEALS ALL-NEW YARIS SEDAN AT 2006 LOS ANGELES AUTO SHOW VitzBoy General Yaris / Vitz Discussion 5 09-05-2010 08:53 PM
2007 Yaris Pricing Info ! YarisBueller New YARIS Purchase Forum 104 06-24-2009 04:54 PM
Swap sedan tach into liftback GrassrootsMS DIY / Maintenance / Service 17 09-26-2007 09:45 AM
thinking about buying the sedan. is it worth the extra money for the s(optB) version? friedbbq General Yaris / Vitz Discussion 14 05-20-2006 12:53 PM


All times are GMT -4. The time now is 01:07 PM.




YarisWorld
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.