Phantom Grip LSD - Toyota Yaris Forums

xnamerxx · 02-08-2011, 12:42 AM

The Rally cars that have been built where I work use torsen differentials with viscous coupling center differentials. But they are only rated to last 3 runs which is better than the motors which are only designed to last 1 run. Making 950 hp on a 2.1l is rough on drivetrain parts.

Ive seen that problem with rear wheel drive cars that don't have differential coolers. I know corvettes, cobras, and vipers have had issues with overheating the diffs when using a clutch based diff.

I prefer the design of helical gear differentials because their designs can bias torque from one wheel to the other as long as you have traction whereas clutch type diffs tend to just limit the slip so to speak. Guess I just prefer the feel of a gear based diff over a clutch based one.

rob323 · 02-08-2011, 01:26 AM

Quote:

Originally Posted by xnamerxx

Ive seen that problem with rear wheel drive cars that don't have differential coolers. I know corvettes, cobras, and vipers have had issues with overheating the diffs when using a clutch based diff.

Rarely a problem in front wheel drive cars cause the preloads aren't set anywhere near as tight as they are in rear wheel drives.

Quote:

I prefer the design of helical gear differentials because their designs can bias torque from one wheel to the other as long as you have traction

Yep, and for a street car they are perfect. Far from it in a circuit car or rally car when you are lifting wheels off the ground though.

rob323 · 02-08-2011, 01:29 AM

Quote:

Originally Posted by xnamerxx

The Rally cars that have been built where I work use torsen differentials with viscous coupling center differentials. But they are only rated to last 3 runs which is better than the motors which are only designed to last 1 run. Making 950 hp on a 2.1l is rough on drivetrain parts.

Careful there xnamerxx, next you'll be dropping names

xnamerxx · 02-08-2011, 12:10 PM

Hahahaha Nah I'm good but if you were very astute with google you should be able to find the car pretty easily, guess I've already said to much.

I guess I just prefer to keep my wheels on tarmac

racerb · 02-19-2011, 10:02 PM

I've run Phantom-Grips on my last 2 FWD racecars, had zero issues with them, does take a little more suspension tuning as it some times induces more understeer. But that can be resolved easily with front camber and rear toe adjustment. The best set up is the Phantom-Grip with it's optional green springs, but for a more streetable set-up just use the standard springs.

speed1 · 12-03-2012, 01:33 AM

I heard lots good/bad things on phantom grip lsd.
Does starlet EP82 fit yaris?
I know C52 trans starlet while C54 yaris same lsd.
Once they open gearbox maybe installing 300usd phantom grip can be cheaper than 1000 kaaz or os giken or trd.....?
Thanks.

02-19-2011, 10:02 PM	#5
racerb View User's Garage Drives: 2010 Yaris HB Blazin' Blue Join Date: Feb 2011 Location: Leland, NC Posts: 444	I've run Phantom-Grips on my last 2 FWD racecars, had zero issues with them, does take a little more suspension tuning as it some times induces more understeer. But that can be resolved easily with front camber and rear toe adjustment. The best set up is the Phantom-Grip with it's optional green springs, but for a more streetable set-up just use the standard springs. __________________ racerb '86 Celica GT '87 Celica GT-S '98 Rav4L '01 Tundra SR5

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02-08-2011, 12:42 AM	#1
xnamerxx 0-60 in slow Drives: light blue liftback Join Date: Aug 2009 Location: so cal Posts: 926	The Rally cars that have been built where I work use torsen differentials with viscous coupling center differentials. But they are only rated to last 3 runs which is better than the motors which are only designed to last 1 run. Making 950 hp on a 2.1l is rough on drivetrain parts. Ive seen that problem with rear wheel drive cars that don't have differential coolers. I know corvettes, cobras, and vipers have had issues with overheating the diffs when using a clutch based diff. I prefer the design of helical gear differentials because their designs can bias torque from one wheel to the other as long as you have traction whereas clutch type diffs tend to just limit the slip so to speak. Guess I just prefer the feel of a gear based diff over a clutch based one.

02-08-2011, 12:10 PM	#4
xnamerxx 0-60 in slow Drives: light blue liftback Join Date: Aug 2009 Location: so cal Posts: 926	Hahahaha Nah I'm good but if you were very astute with google you should be able to find the car pretty easily, guess I've already said to much. I guess I just prefer to keep my wheels on tarmac

12-03-2012, 01:33 AM	#6
speed1 Drives: vitz rs Join Date: Apr 2011 Location: Lecco-Italy Posts: 77	I heard lots good/bad things on phantom grip lsd. Does starlet EP82 fit yaris? I know C52 trans starlet while C54 yaris same lsd. Once they open gearbox maybe installing 300usd phantom grip can be cheaper than 1000 kaaz or os giken or trd.....? Thanks.