Track cars with Upgraded LSD - Page 2

skimobile · 11-04-2009, 01:18 PM

Quote:

Originally Posted by Turn in Concepts

That setup works very well and I would recommend it. We have a supplier we buy them from. You definitely need one if you don't have one. You will be shocked at how different your car will feel on track.

Tony

I have a PPG torson front and KAAZ 1.5 clutch type rear LSD and agree totally.
There is a break in procedure for the clutch types...it involves doing figure "8"'s in a parking lot till you want to puke.

bhhamblin · 11-04-2009, 01:28 PM

yeah i did the figure 8s for about 30 minutes.

Pavlo · 11-04-2009, 02:19 PM

much easier to go one way in circles for a bit, then the other, but yes, very pukey!

I have found the Kaaz/Cusco options are a step up in feel and overalll track speed compared to a highly preloaded stock unit. My preference would be ATB front, DCCD centre and aftermarket LSD rear. Currently still using an 04 Spec C stock gearbox in our track car.

I wouldn't worry about kerbs and diffs especially, if you're bouncing off kerbs and getting a wheel in the air consistently, you have other things to worry about!

Turn in Concepts · 11-04-2009, 08:03 PM

Quote:

Originally Posted by Pavlo

I wouldn't worry about kerbs and diffs especially, if you're bouncing off kerbs and getting a wheel in the air consistently, you have other things to worry about!

This!!!

ljaviation · 11-04-2009, 09:05 PM

I'll chime in on my 5 speed '03. Track car only.
Started with a set of PAR straight cut syncro gears, Cusco center and MZ front, and MZ rear with a R160. GT35R 400+WHP.

Tore 3rd gear coming out of Oak Tree at VIR. Tranny still sits as per from last year on my bench. ( Yet to go to Andrewtech.) Loved the control, loud and clanky, but loved the control.

Purchased a used PPG 5speed dogbox with Quiafe front. Installed the Cusco center from my blown tranny. Again loved the control.
Tore 2 R160's to bits in 4 months. Sheared ring and pinion teeth.

So, I get a stock '08 3.54 R180 with the stock diff. It SUCKS. I lift the inside right rear tire on the exit of 2 and Oak Tree and it's nothing but spinning, lost time and tire.
I will be getting another Cusco Mz 2 way for the R180 rear, before the next season.
I think the slight pushing of it being"too" aggressive is much better than watching my RH tire leave nothing but a stripe in my rear view mirror.
FWIW, and I ain't no racer, lol.
L J

mateospeed · 11-05-2009, 03:19 PM

Quote:

Originally Posted by ljaviation

I'll chime in on my 5 speed '03. Track car only.
L J

Slightly OT:
Are you the guy with the yellow car, recent pink numbers? If so, I've been meaning to catch you for quite a while now and ask you for a ride. Hell, even if you're not that guy, it seems like I need to catch a ride ASAP.

Less OT:
I have a slightly different application: less power. Most folks chiming in seem to be running lots of power. I'm at a relatively low power level. I wonder how much diffs matter on a car that doesn't really have the potential to spin tires anyway? I'm on 300lb/in springs and stock sway bars, and NEVER lift tires. Perhaps I need some more ass under the hood to truly join this discussion...
-Matt

Turn in Concepts · 11-06-2009, 12:54 AM

Quote:

Originally Posted by ljaviation

I'll chime in on my 5 speed '03. Track car only.
Started with a set of PAR straight cut syncro gears, Cusco center and MZ front, and MZ rear with a R160. GT35R 400+WHP.

Tore 3rd gear coming out of Oak Tree at VIR. Tranny still sits as per from last year on my bench. ( Yet to go to Andrewtech.) Loved the control, loud and clanky, but loved the control.

Purchased a used PPG 5speed dogbox with Quiafe front. Installed the Cusco center from my blown tranny. Again loved the control.
Tore 2 R160's to bits in 4 months. Sheared ring and pinion teeth.

So, I get a stock '08 3.54 R180 with the stock diff. It SUCKS. I lift the inside right rear tire on the exit of 2 and Oak Tree and it's nothing but spinning, lost time and tire.
I will be getting another Cusco Mz 2 way for the R180 rear, before the next season.
I think the slight pushing of it being"too" aggressive is much better than watching my RH tire leave nothing but a stripe in my rear view mirror.
FWIW, and I ain't no racer, lol.
L J

We did that on an R160. Fix that seems to be working so far is to shot peen the hell out of them.

ljaviation · 11-06-2009, 06:36 PM

Maeospeed,
Yeah that's me. Stop by and say high sometime.
The car's currently down for winter refresh.

L J

WgnWheel · 11-06-2009, 07:05 PM

I've been running cusco 1.5's front and rear, tarmac center in my 04 wrx(ra gears) and haven't had any issues yet as far as the tranny or rear end...but i've been waiting. Otherwise, the car is 100% more fun to drive on the track.

WRX 2002 · 11-06-2009, 07:52 PM

Quote:

Originally Posted by WgnWheel

I've been running cusco 1.5's front and rear, tarmac center in my 04 wrx(ra gears) and haven't had any issues yet as far as the tranny or rear end...but i've been waiting. Otherwise, the car is 100% more fun to drive on the track.

In what way is it more fun?. Faster around the corners or more drifting style.

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11-04-2009, 01:28 PM	#27
bhhamblin Scooby Guru Member#: 99397 Join Date: Oct 2005 Chapter/Region: RMIC Location: Clinton, UT Vehicle: 2008 STi 2006 WRX	yeah i did the figure 8s for about 30 minutes.

11-04-2009, 02:19 PM	#28
Pavlo Scooby Specialist Member#: 23015 Join Date: Aug 2002 Location: Wellingborough, UK Vehicle: 95-> GC8 Black, blue and blue	much easier to go one way in circles for a bit, then the other, but yes, very pukey! I have found the Kaaz/Cusco options are a step up in feel and overalll track speed compared to a highly preloaded stock unit. My preference would be ATB front, DCCD centre and aftermarket LSD rear. Currently still using an 04 Spec C stock gearbox in our track car. I wouldn't worry about kerbs and diffs especially, if you're bouncing off kerbs and getting a wheel in the air consistently, you have other things to worry about!

11-04-2009, 09:05 PM	#30
ljaviation NASIOC Supporter Member#: 42270 Join Date: Aug 2003 Chapter/Region: South East Location: Asheboro, NC Vehicle: 2003 A&P IA ww.flyingleafaviation.com	I'll chime in on my 5 speed '03. Track car only. Started with a set of PAR straight cut syncro gears, Cusco center and MZ front, and MZ rear with a R160. GT35R 400+WHP. Tore 3rd gear coming out of Oak Tree at VIR. Tranny still sits as per from last year on my bench. ( Yet to go to Andrewtech.) Loved the control, loud and clanky, but loved the control. Purchased a used PPG 5speed dogbox with Quiafe front. Installed the Cusco center from my blown tranny. Again loved the control. Tore 2 R160's to bits in 4 months. Sheared ring and pinion teeth. So, I get a stock '08 3.54 R180 with the stock diff. It SUCKS. I lift the inside right rear tire on the exit of 2 and Oak Tree and it's nothing but spinning, lost time and tire. I will be getting another Cusco Mz 2 way for the R180 rear, before the next season. I think the slight pushing of it being"too" aggressive is much better than watching my RH tire leave nothing but a stripe in my rear view mirror. FWIW, and I ain't no racer, lol. L J

11-06-2009, 06:36 PM	#33
ljaviation NASIOC Supporter Member#: 42270 Join Date: Aug 2003 Chapter/Region: South East Location: Asheboro, NC Vehicle: 2003 A&P IA ww.flyingleafaviation.com	Maeospeed, Yeah that's me. Stop by and say high sometime. The car's currently down for winter refresh. L J

11-06-2009, 07:05 PM	#34
WgnWheel Scooby Specialist Member#: 63605 Join Date: Jun 2004 Chapter/Region: SWIC Location: Moms...yours Vehicle: 04 Wrx Wagon -TTS 08 Titan, 08 MX-5	I've been running cusco 1.5's front and rear, tarmac center in my 04 wrx(ra gears) and haven't had any issues yet as far as the tranny or rear end...but i've been waiting. Otherwise, the car is 100% more fun to drive on the track.