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2010 street GT3 vs Cup front rotors

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Old 09-21-2011, 11:36 AM
  #16  
aussie jimmy
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chris, you doing 30 - 40 laps in a row, or in a day? if in a row, it's too many. you and your car should be out there for 20 minutes max, then both of you should take a break to cool down.
Old 09-21-2011, 06:03 PM
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911rox
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Jimmy, 30-40 laps then in for a tank of gas and drink and breather... 150-200 laps in a day... Car and brakes are running perfect, tyres well they are shreading... It costs a **** load to get a v8 supercar driver out for the day so we are both making the most of it... Track time is what I need to develop and we are getting plenty of that.

I was at Winton on Tuesday and we did 450kms+ on track ( limited only by a couple heavy downpours or it would have benn more like 600). Its amazing what these cars can do, even the motorsport technicians there are impressed.

Extreme track daying...
Old 09-21-2011, 09:10 PM
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aussie jimmy
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how long is each session? ( in minutes)
Old 09-21-2011, 09:27 PM
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Originally Posted by aussie jimmy
how long is each session? ( in minutes)
Jimmy, sessions r 60-90min each or basically till fuel light comes on. Winton has shorter straights so peak speed is shy of 200. Water temp stays nailed at 80c and oil temp 90-100c all day long. Brakes on srf so no fade issues... Tyre degredatn is high bt nt going 4 best laps, getting max seat time 2 learn car as i push it more. Phillip island is way harsher on brakes thus 30-40min sessions...
Old 09-21-2011, 09:39 PM
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that's intense, chris! yes, car can cope, but keep tabs on tyre pressures/temps and brakes. as you get quicker, these will become an issue.
that's a very long time to be running the car non-stop.
Old 09-22-2011, 11:32 AM
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Get on track, empty tank, repeat tank after tank. I love it
Old 09-22-2011, 03:36 PM
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1198r
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Originally Posted by 24Chromium
It is interesting that the cup rotor and the street rotor are different in thickness by 2mm. Maybe the cup rotor is the older of the two and the common thickness then was 30mm? Or, maybe the factory wanted 30mm thickness to allow 1mm more pad thickness for each pad?

Anyone know the history? (sorry for being such a geek)
Funny you should say that. I am just about to change my discs (see other thread running) and was talking to shop about pads. they had a pad for a 997 Cup (2006 model i think) and although it was very similar it was 2mm thicker than the pad for the gen 2 rs street car (this was rs29's).
Old 09-22-2011, 06:56 PM
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Originally Posted by TRAKCAR
Get on track, empty tank, repeat tank after tank. I love it
Lol... Thanx trak

Oh and how it loves to empty those tanks... 9lt/100km to the track... 33ltr/100km on the track!
Old 09-22-2011, 09:23 PM
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aussie jimmy
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my r32 is close....31.6ltr/100km. only average 6ltr/100km on the road.
car is at best when fuel light comes on - can actually feel it, then look and the light comes on. funny when going through turns and power cuts out as minimum fuel has sloshed to the other side, so no feed.
Old 09-22-2011, 09:41 PM
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33l is 8.73 Gallon for 62.5 miles = 7.16 MPG. Must be less WOT at that track then Sebring.

The 3.8's empty 16 gallons in 80 miles, or about 45 minutes or 5MPG at Sebring.

Not bad but the 3.6 did it in 100, better then 6MPG.
Old 09-22-2011, 09:45 PM
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Yeh, heaps less WOT... Circuit map

http://wintonmotorraceway.com.au/hom...d=12&Itemid=27

Phillip island on the other hand is way faster, way less range per tank...
Old 09-22-2011, 09:46 PM
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45 minutes. that's madness! do you take your own fuel to the track, peter? or is there a bowser on site?
Old 09-22-2011, 10:18 PM
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LC MotorSports
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Originally Posted by 1198r
Funny you should say that. I am just about to change my discs (see other thread running) and was talking to shop about pads. they had a pad for a 997 Cup (2006 model i think) and although it was very similar it was 2mm thicker than the pad for the gen 2 rs street car (this was rs29's).

The Street rotors and Cup rotors are different thickness due to each having different pad thickness which they utilize.

The Street version runs a pad that is 18 mm thick
The GT3 Cup version runs a pad that is 18.5 mm thick
The GT3 Cup S & Grand Am spec run pads that is 22 mm thick.

Starting this fall we will be offering a direct replacement for the GT3 street / Cup which you will not out have to Modify (notch) your front brake pads.
Old 09-22-2011, 11:08 PM
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Originally Posted by LC MotorSports
The Street rotors and Cup rotors are different thickness due to each having different pad thickness which they utilize.

The Street version runs a pad that is 18 mm thick
The GT3 Cup version runs a pad that is 18.5 mm thick
The GT3 Cup S & Grand Am spec run pads that is 22 mm thick.

Starting this fall we will be offering a direct replacement for the GT3 street / Cup which you will not out have to Modify (notch) your front brake pads.
Great info! Thanks
Old 09-22-2011, 11:36 PM
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Also, keep in mind that each of these pads have a different Clearance Arc. This means that each rotor assembly is slightly different in its Hat Configuration.


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