Willow Springs International Speedway "Big Willow" PCA-SDR GT3RS
10-23-2017, 05:49 PM
#16
A GT3RS over a GT3?
If that is your question, then you wont notice much of a difference.
The main difference would be at higher speeds like a California Speedway where you can hit 170mph on the straight, the down force is nice to have.
If you check 0 to 60 times and even 0 to 100 times there both .1 difference in acceleration.
Also yes the RS has bigger tires, but most GT3 guys that track there car are already putting on them 265/325s so the advantage is not anymore.
If that is your question, then you wont notice much of a difference.
The main difference would be at higher speeds like a California Speedway where you can hit 170mph on the straight, the down force is nice to have.
If you check 0 to 60 times and even 0 to 100 times there both .1 difference in acceleration.
Also yes the RS has bigger tires, but most GT3 guys that track there car are already putting on them 265/325s so the advantage is not anymore.
Wing probably a time liability at 170 at Fontana. Not going to get quite those kind of speeds at big willow. I would have to think that the wing and wider rubber would make for some really significant time improvement in the turn 8 & 9 combo, but all conjecture on my part.
Can anyone here claim to have at least matched Randy's .1 GT3 time at big Willow in a .1 RS on stock rubber?
10-23-2017, 05:58 PM
#17
Burning Brakes
Thread Starter
Not to many GT3 people that can run anywhere near Randy's numbers would be running stock OEM tires.
Most are going to be running either Hoosiers or Bridgestone RE-71r.
My friend at Chuckwalla this weekend ran a 1:57 in his Mustang GT350, and I believe Randy's best time was 2:00.08 but again Randy was on OEM tires and my friend was on Hoosiers.
Most are going to be running either Hoosiers or Bridgestone RE-71r.
My friend at Chuckwalla this weekend ran a 1:57 in his Mustang GT350, and I believe Randy's best time was 2:00.08 but again Randy was on OEM tires and my friend was on Hoosiers.
Last edited by GT345; 10-24-2017 at 11:54 AM.
10-23-2017, 06:57 PM
#18
Rennlist Member
1:26.14 with 272 hp in a street driven 1972 911 with a bit of homemade aero. I think he's on NT-01 or equivalent tires (similar grip to MPSC2 N0). (Video credit: Jack Olsen)
10-23-2017, 07:06 PM
#19
Burning Brakes
Thread Starter
Or you'd need only 272 hp and a little bit of aero:
https://www.youtube.com/watch?v=AZs0-0Dl5Ck
1:26.14 with 272 hp in a street driven 1972 911 with a bit of homemade aero. I think he's on NT-01 or equivalent tires (similar grip to MPSC2 N0).
https://www.youtube.com/watch?v=AZs0-0Dl5Ck
1:26.14 with 272 hp in a street driven 1972 911 with a bit of homemade aero. I think he's on NT-01 or equivalent tires (similar grip to MPSC2 N0).
10-23-2017, 07:26 PM
#21
Burning Brakes
Thread Starter
10-23-2017, 11:02 PM
#22
Don't forget that Jack's car weighs something 900 lbs less than a modern GT car:
http://forums.pelicanparts.com/porsc...beauty-ii.html
http://forums.pelicanparts.com/porsc...beauty-ii.html
10-23-2017, 11:05 PM
#23
Not to many GT3 people that can run anywhere near Randy's numbers would be running stock OEM tires.
Most are going to be running either Hoosiers or Bridgestone RE-11s.
My friend at Chuckwalla this weekend ran a 1:57 in his Mustang GT350, and I believe Randy's best time was 2:00.08 but again Randy was on OEM tires and my friend was on Hoosiers.
Most are going to be running either Hoosiers or Bridgestone RE-11s.
My friend at Chuckwalla this weekend ran a 1:57 in his Mustang GT350, and I believe Randy's best time was 2:00.08 but again Randy was on OEM tires and my friend was on Hoosiers.
10-24-2017, 02:47 AM
#24
Rennlist Member
Don't forget that Jack's car weighs something 900 lbs less than a modern GT car:
http://forums.pelicanparts.com/porsc...beauty-ii.html
http://forums.pelicanparts.com/porsc...beauty-ii.html
10-24-2017, 03:02 AM
#25
Burning Brakes
Thread Starter
10-24-2017, 10:21 AM
#26
Pro
Originally Posted by GT345
A GT3RS over a GT3?
If that is your question, then you wont notice much of a difference.
The main difference would be at higher speeds like a California Speedway where you can hit 170mph on the straight, the down force is nice to have.
If you check 0 to 60 times and even 0 to 100 times there both .1 difference in acceleration.
Also yes the RS has bigger tires, but most GT3 guys that track there car are already putting on them 265/325s so the advantage is not anymore.
If that is your question, then you wont notice much of a difference.
The main difference would be at higher speeds like a California Speedway where you can hit 170mph on the straight, the down force is nice to have.
If you check 0 to 60 times and even 0 to 100 times there both .1 difference in acceleration.
Also yes the RS has bigger tires, but most GT3 guys that track there car are already putting on them 265/325s so the advantage is not anymore.
10-24-2017, 11:50 AM
#27
Burning Brakes
Thread Starter
For me I had a GT3, then bought the RS because I loved how it looked more then anything, and also figured they might hold there value better.
Was hoping I would see a difference in performance but there really was not much I could tell or feel other then some minor stuff like the shifting was a bit smoother, but at the end of the day there both amazing cars that you could daily drive and still get amazing times at the track with.
01-19-2018, 04:18 PM
#28
Race Car
Officially, the weight of a PDK GT3 with a driver, full tank of gas, and a nominal amount of luggage is 3,318 pounds.
Of course, options add more weight -- except the ones that take it away.
But that's the official DIN weight, plus 75kg (for driver and luggage -- what, a wallet?), per EC standards.
So, a 666-lb weight difference over my car, which is significant. (637 pounds more if we're talking about a GT3RS, which is officially 3,289 with fuel, a driver and some luggage).
Still, all the steering/suspension tech on the GT3 and the 475 hp to my 272 hp. I'm still proud of my car's lap times.
But that's not what brings me back to this old thread. Yesterday, I was out at Willow again in my car, and I also got to briefly drive the new 991.2 GT3.
And I've got to admit, I don't think my car's got an answer for it at that particular track any more.
Now, I wasn't there to set a lap time. And I wasn't in a position to see what it could do with a little focus on the part of the driver. I was instructing, and talking to the passenger, and in traffic, yada yada yada. The owner, who might or might not want to be identified, was a strong driver himself. He was driving mid-to-high 1:30s while we were talking about the different corners. When I moved over to the driver's side, the rear pressures were already well above 40 pounds, which meant the rear end wasn't biting like I'd like. But here's my lap time estimate, based on the four or five laps I had at the wheel.
Talking, and in traffic, and leaving the PDK in automatic, I drove a 1:31 without pushing the car at all.
Without a passenger and a clean lap, I think this would run a 1:29 or 1:28 with me still getting used to the car.
With a few dozen laps, and the time to take tire temps and adjust pressures, 1:27's. Maybe 1:26's.
With the kind of official support Randy Pobst and the magazines get (where you can get a set of MPSC2s in exactly the right point in their lifespan, with exactly the right pressures), I think it's low 1:26's or high :25's.
I'm not a professional driver. (Well, technically I do work sometimes work for Porsche as a driving coach at their setup in Carson -- but I don't have Randy Pobst's skill set.) I do have a LOT of laps at Willow. And while this is speculation on my part, since I haven't driven the thing in anger...
Based on that short drive, I'd say I think there'd be 1:26's to 1:25's in the new GT3, even for me, maybe. (And possibly even without Porsche or Michelin sending out a truckload of fresh tires.) Definitely for Randy and the kind of support Porsche is going to extend for him and a magazine test.
Above all, the new GT3 is a beautiful car and a LOT of fun to drive. Because of the heat in the tires when I took over, the rear end was all over the place -- but not in a way that ever felt out of control.
I'll take this picture down if the owner objects -- I'm using one with all potential identifiers obscured. But what a blast this thing is on a track.
Smiling at the wheel, and able to carry on a conversation at those speeds:
Of course, options add more weight -- except the ones that take it away.
But that's the official DIN weight, plus 75kg (for driver and luggage -- what, a wallet?), per EC standards.
So, a 666-lb weight difference over my car, which is significant. (637 pounds more if we're talking about a GT3RS, which is officially 3,289 with fuel, a driver and some luggage).
Still, all the steering/suspension tech on the GT3 and the 475 hp to my 272 hp. I'm still proud of my car's lap times.
But that's not what brings me back to this old thread. Yesterday, I was out at Willow again in my car, and I also got to briefly drive the new 991.2 GT3.
And I've got to admit, I don't think my car's got an answer for it at that particular track any more.
Now, I wasn't there to set a lap time. And I wasn't in a position to see what it could do with a little focus on the part of the driver. I was instructing, and talking to the passenger, and in traffic, yada yada yada. The owner, who might or might not want to be identified, was a strong driver himself. He was driving mid-to-high 1:30s while we were talking about the different corners. When I moved over to the driver's side, the rear pressures were already well above 40 pounds, which meant the rear end wasn't biting like I'd like. But here's my lap time estimate, based on the four or five laps I had at the wheel.
Talking, and in traffic, and leaving the PDK in automatic, I drove a 1:31 without pushing the car at all.
Without a passenger and a clean lap, I think this would run a 1:29 or 1:28 with me still getting used to the car.
With a few dozen laps, and the time to take tire temps and adjust pressures, 1:27's. Maybe 1:26's.
With the kind of official support Randy Pobst and the magazines get (where you can get a set of MPSC2s in exactly the right point in their lifespan, with exactly the right pressures), I think it's low 1:26's or high :25's.
I'm not a professional driver. (Well, technically I do work sometimes work for Porsche as a driving coach at their setup in Carson -- but I don't have Randy Pobst's skill set.) I do have a LOT of laps at Willow. And while this is speculation on my part, since I haven't driven the thing in anger...
Based on that short drive, I'd say I think there'd be 1:26's to 1:25's in the new GT3, even for me, maybe. (And possibly even without Porsche or Michelin sending out a truckload of fresh tires.) Definitely for Randy and the kind of support Porsche is going to extend for him and a magazine test.
Above all, the new GT3 is a beautiful car and a LOT of fun to drive. Because of the heat in the tires when I took over, the rear end was all over the place -- but not in a way that ever felt out of control.
I'll take this picture down if the owner objects -- I'm using one with all potential identifiers obscured. But what a blast this thing is on a track.
Smiling at the wheel, and able to carry on a conversation at those speeds:
Last edited by JackOlsen; 01-19-2018 at 05:27 PM.
01-21-2018, 11:32 AM
#29
Burning Brakes
Thread Starter
Officially, the weight of a PDK GT3 with a driver, full tank of gas, and a nominal amount of luggage is 3,318 pounds.
Of course, options add more weight -- except the ones that take it away.
But that's the official DIN weight, plus 75kg (for driver and luggage -- what, a wallet?), per EC standards.
So, a 666-lb weight difference over my car, which is significant. (637 pounds more if we're talking about a GT3RS, which is officially 3,289 with fuel, a driver and some luggage).
Still, all the steering/suspension tech on the GT3 and the 475 hp to my 272 hp. I'm still proud of my car's lap times.
But that's not what brings me back to this old thread. Yesterday, I was out at Willow again in my car, and I also got to briefly drive the new 991.2 GT3.
And I've got to admit, I don't think my car's got an answer for it at that particular track any more.
Now, I wasn't there to set a lap time. And I wasn't in a position to see what it could do with a little focus on the part of the driver. I was instructing, and talking to the passenger, and in traffic, yada yada yada. The owner, who might or might not want to be identified, was a strong driver himself. He was driving mid-to-high 1:30s while we were talking about the different corners. When I moved over to the driver's side, the rear pressures were already well above 40 pounds, which meant the rear end wasn't biting like I'd like. But here's my lap time estimate, based on the four or five laps I had at the wheel.
Talking, and in traffic, and leaving the PDK in automatic, I drove a 1:31 without pushing the car at all.
Without a passenger and a clean lap, I think this would run a 1:29 or 1:28 with me still getting used to the car.
With a few dozen laps, and the time to take tire temps and adjust pressures, 1:27's. Maybe 1:26's.
With the kind of official support Randy Pobst and the magazines get (where you can get a set of MPSC2s in exactly the right point in their lifespan, with exactly the right pressures), I think it's low 1:26's or high :25's.
I'm not a professional driver. (Well, technically I do work sometimes work for Porsche as a driving coach at their setup in Carson -- but I don't have Randy Pobst's skill set.) I do have a LOT of laps at Willow. And while this is speculation on my part, since I haven't driven the thing in anger...
Based on that short drive, I'd say I think there'd be 1:26's to 1:25's in the new GT3, even for me, maybe. (And possibly even without Porsche or Michelin sending out a truckload of fresh tires.) Definitely for Randy and the kind of support Porsche is going to extend for him and a magazine test.
Above all, the new GT3 is a beautiful car and a LOT of fun to drive. Because of the heat in the tires when I took over, the rear end was all over the place -- but not in a way that ever felt out of control.
I'll take this picture down if the owner objects -- I'm using one with all potential identifiers obscured. But what a blast this thing is on a track.
Smiling at the wheel, and able to carry on a conversation at those speeds:
Of course, options add more weight -- except the ones that take it away.
But that's the official DIN weight, plus 75kg (for driver and luggage -- what, a wallet?), per EC standards.
So, a 666-lb weight difference over my car, which is significant. (637 pounds more if we're talking about a GT3RS, which is officially 3,289 with fuel, a driver and some luggage).
Still, all the steering/suspension tech on the GT3 and the 475 hp to my 272 hp. I'm still proud of my car's lap times.
But that's not what brings me back to this old thread. Yesterday, I was out at Willow again in my car, and I also got to briefly drive the new 991.2 GT3.
And I've got to admit, I don't think my car's got an answer for it at that particular track any more.
Now, I wasn't there to set a lap time. And I wasn't in a position to see what it could do with a little focus on the part of the driver. I was instructing, and talking to the passenger, and in traffic, yada yada yada. The owner, who might or might not want to be identified, was a strong driver himself. He was driving mid-to-high 1:30s while we were talking about the different corners. When I moved over to the driver's side, the rear pressures were already well above 40 pounds, which meant the rear end wasn't biting like I'd like. But here's my lap time estimate, based on the four or five laps I had at the wheel.
Talking, and in traffic, and leaving the PDK in automatic, I drove a 1:31 without pushing the car at all.
Without a passenger and a clean lap, I think this would run a 1:29 or 1:28 with me still getting used to the car.
With a few dozen laps, and the time to take tire temps and adjust pressures, 1:27's. Maybe 1:26's.
With the kind of official support Randy Pobst and the magazines get (where you can get a set of MPSC2s in exactly the right point in their lifespan, with exactly the right pressures), I think it's low 1:26's or high :25's.
I'm not a professional driver. (Well, technically I do work sometimes work for Porsche as a driving coach at their setup in Carson -- but I don't have Randy Pobst's skill set.) I do have a LOT of laps at Willow. And while this is speculation on my part, since I haven't driven the thing in anger...
Based on that short drive, I'd say I think there'd be 1:26's to 1:25's in the new GT3, even for me, maybe. (And possibly even without Porsche or Michelin sending out a truckload of fresh tires.) Definitely for Randy and the kind of support Porsche is going to extend for him and a magazine test.
Above all, the new GT3 is a beautiful car and a LOT of fun to drive. Because of the heat in the tires when I took over, the rear end was all over the place -- but not in a way that ever felt out of control.
I'll take this picture down if the owner objects -- I'm using one with all potential identifiers obscured. But what a blast this thing is on a track.
Smiling at the wheel, and able to carry on a conversation at those speeds:
My tire issue has been resolved and I now know which Hoosiers are the right setup not to cause the TC issues I was having that day.
PCA SDR is schedule to go back this year in September so I am looking to continue where I left off and see if I can get down below 1:30s
Do you ever attend any of the PCA SDR events?
01-21-2018, 11:19 PM
#30
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
I used to live 50 miles from that track! Big willow is a big boy track coming out of the last turn back on to the straight takes a lot of guts. That’s a nice facility with lots of places to run and even a great karting track. One of the things I miss about California.