991.2 Base/S/GTS Modification & Race Track Prep Thread
#526
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4 Point 0. You are my hero Sir
my Michelin 4S got chewed up after about 3-4 sessions. I need 2nd set of rims with more track focused tires. Maybe stiffer springs. Too hot in Houston to track, wait for fall.
my Michelin 4S got chewed up after about 3-4 sessions. I need 2nd set of rims with more track focused tires. Maybe stiffer springs. Too hot in Houston to track, wait for fall.
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Next track day is 10th June. Excited to see how the TrofeoR performs, as it is supposed to have a much stiffer side wall. A few guys in my group are testing Nankang AR1. They are 1/3 the price, so disposable for tracking.
They come in 20's and GTS/GT3 sizes. So the next step for me will be get some BBS FI-R's and use the OEM wheels as track wheels.
I was running Pagid Yellow on front and Circo on rear (As I couldn't get yellow for rear) It was great for track, but they squealed bad on the street. The new BBK is silent. But it only has the FM1000 that brembo use. It doesn't have the initial bite. It won't handle extreme heat, however because they are 380 and 380 and a lot more vanes and mass, I am hoping that cooling will be enough.
I will give them ago. Maybe Pagid Blue would be a good all rounder street/sprint. I don't really want to change pads for track if I don't have to. If I test the Blue, they can be run on the rear all the time, and maybe just put Yellow on the front for track and change back to front blue on the street. 1st world problems.
#527
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I'm enjoying the silence of FM1000 for awhile.
#528
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They are a dedicated track pad, great initial bite, narrow modulation window, and not bad from cold - but they do squeal a lot - makes the 29s sound quiet.
http://pmuracing.com/pad-compound/metallic/h16-03/
You will have fun with the Trofeo Rs - just be careful in the wet.
On another note, I have had a set of MPSC2N1 delaminate - wasn't amused - they were replaced gratis.
http://pmuracing.com/pad-compound/metallic/h16-03/
You will have fun with the Trofeo Rs - just be careful in the wet.
On another note, I have had a set of MPSC2N1 delaminate - wasn't amused - they were replaced gratis.
#529
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I am interested to see what the trofeo R's are like in the wet. Its hot here 9 months of the year. Mostly dry. So not much rain. 10th June next big track day. Can't wait. Tractive has not arrived yet, but still hoping it will be here before the 10th.
I am interested to see if the FM1000 that comes with Brembo BBK will be up to the task. With the extra mass of the 380's all round and extra vanes, I am hoping that is enough cooling so they won't over heat. I really don't want to go back to squeal city. I am thinking trying pagid blues first before jumping back to yellows.
#530
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Well, I went and did the ultimate upgrade - just purchased a 991 II GT3 RS - got a great deal on a new car that a sale had fallen through on. Got tired of waiting for the new GT4 and although it will be good it won't be an RS and may not be available until the end of Q1 2020.
The idea being this will be my track/Tarmac car for the next few years. This is not a reflection on the 991 II GTS which has proven itself to be truly formidable, perhaps the ultimate cross over car if used wisely.
Sadly, and with some regret I have had to let the GTS go as I have only space for 4 cars (I know the ultimate first world problem). So I have rationalised to the 981 GTS, GT3 RS, 720S and my trusty prodrive STI.
So, as a conclusion where did I find the sweet spot to be - simple, RAS, SPASM, quality brake pads - best all rounder Pagid RSL29, modest alignment -1 at front -1.4 at rear, high T brake fluid (all much of a muchness) and tires - generally Michelin Pilot Sport Cup 2 N1 (as an all rounder). The selection isn't great and hopefully the Cup 2 R will trickle down. I never found power and torque to be lacking, the biggest limiter in performance was the lack of tire choice.
Good luck to all and enjoy that wonderful 3l twin in whichever guise - it's a great engine.😀👍 I'll report back when I have some seat time and do a real comparison with lots of data.
The idea being this will be my track/Tarmac car for the next few years. This is not a reflection on the 991 II GTS which has proven itself to be truly formidable, perhaps the ultimate cross over car if used wisely.
Sadly, and with some regret I have had to let the GTS go as I have only space for 4 cars (I know the ultimate first world problem). So I have rationalised to the 981 GTS, GT3 RS, 720S and my trusty prodrive STI.
So, as a conclusion where did I find the sweet spot to be - simple, RAS, SPASM, quality brake pads - best all rounder Pagid RSL29, modest alignment -1 at front -1.4 at rear, high T brake fluid (all much of a muchness) and tires - generally Michelin Pilot Sport Cup 2 N1 (as an all rounder). The selection isn't great and hopefully the Cup 2 R will trickle down. I never found power and torque to be lacking, the biggest limiter in performance was the lack of tire choice.
Good luck to all and enjoy that wonderful 3l twin in whichever guise - it's a great engine.😀👍 I'll report back when I have some seat time and do a real comparison with lots of data.
#532
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So I did a track day with the BremboGTS BBK kit fitted with the FM1000 brake pads. They are awesome on the street. Zero squeal. Even my OEM brakes squealed.
I just eye balled the pads after the track day. Just roughly it looks like i used 40% of the front brake pads. However It only looks like 10% of the rears. That's great progress.
So really its just about pad selection now. Pagid blue can handle more heat than the FM1000, and are very street friendly. So I will start at Blue. If there is no squeal, I may try the orange on the front. If that is still not enough, I may have to swap to Yellow at front on track days, and back to blue on the street. Pagid says the blue can be run on the rear at all times, even of orange or Yellow up front.
I just eye balled the pads after the track day. Just roughly it looks like i used 40% of the front brake pads. However It only looks like 10% of the rears. That's great progress.
So really its just about pad selection now. Pagid blue can handle more heat than the FM1000, and are very street friendly. So I will start at Blue. If there is no squeal, I may try the orange on the front. If that is still not enough, I may have to swap to Yellow at front on track days, and back to blue on the street. Pagid says the blue can be run on the rear at all times, even of orange or Yellow up front.
#533
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Great thread that I read from beginning to end.
I will be tracking my new to me 2017 4S (SC, rear axle steering, PDK, H&R springs, studs conversion, Sharkwerks catback, no engine mods YET - reading this thread confirmed I should COBB the car and chances are I will, regardless of the warranty) for the first time in Circuit Mont Tremblant up north in Quebec, Canada.
Coming from a 2015 M3 (coilovers, Stage 1 tune, Toyo R888R's that I really didn't like, the Pilot Sport 4S were better yet they do get hot much faster, they'll be fine for the first day and sessions are only 20-minutes), I can't wait to see what the car can do. I was also officially bumped from the Advanced group to Pro with the club I drive with, so it's all very exciting.
I'm no data freak like many here, but I will report on personal feeling anc comparisons with other cars on the track.
And again, thanks for everyone involved in this thread, it's great to be able to learn so much about our cars from all the shared knowledge.
I will be tracking my new to me 2017 4S (SC, rear axle steering, PDK, H&R springs, studs conversion, Sharkwerks catback, no engine mods YET - reading this thread confirmed I should COBB the car and chances are I will, regardless of the warranty) for the first time in Circuit Mont Tremblant up north in Quebec, Canada.
Coming from a 2015 M3 (coilovers, Stage 1 tune, Toyo R888R's that I really didn't like, the Pilot Sport 4S were better yet they do get hot much faster, they'll be fine for the first day and sessions are only 20-minutes), I can't wait to see what the car can do. I was also officially bumped from the Advanced group to Pro with the club I drive with, so it's all very exciting.
I'm no data freak like many here, but I will report on personal feeling anc comparisons with other cars on the track.
And again, thanks for everyone involved in this thread, it's great to be able to learn so much about our cars from all the shared knowledge.
Last edited by JT_; 06-18-2019 at 11:18 AM.
#534
Three Wheelin'
#535
Drifting
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Just completed first Tarmac rally of the season and am booked in for a two day sprint series next week.
Also contemplating adding a .2 RS to the stable but balancing the potential of the new GT4 or a gut-able .2 GT3 with that decision. Lots of options - all good. 😀
Tried out out new pads - on another Porsche, Project Mu HC16-03 excellent pad. GTS is also ready to rumble😀
Also contemplating adding a .2 RS to the stable but balancing the potential of the new GT4 or a gut-able .2 GT3 with that decision. Lots of options - all good. 😀
Tried out out new pads - on another Porsche, Project Mu HC16-03 excellent pad. GTS is also ready to rumble😀
#537
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Originally Posted by JAhmed
I had no idea Project Mu made Porsche applications. Do they make this for a base 991.2 C2?? Had great experiences with them on my WRX back in the day.
#538
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Not trying to change the discussion, but what would your brake pad recommendation be for a 991.2 S/GTS used mostly street, to reduce OEM steel brake dust - without sqealing like garbage truck brakes?
#539
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Originally Posted by PCA1983
Not trying to change the discussion, but what would your brake pad recommendation be for a 991.2 S/GTS used mostly street, to reduce OEM steel brake dust - without sqealing like garbage truck brakes?
#540
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I would not recommend RE-10's as a street pad. They are quiet cold (first 3-4 stops), get noisy when they are warm (most street driving), then quiet on the track. They stay quiet for a few days after a bedding/track day. And they are almost as dirty as OEM.
I swap them out for their little brother TS-20's for the street. No noise and minimal dust. $300 cheaper than RE-10, but still pricey for a street pad!
I swap them out for their little brother TS-20's for the street. No noise and minimal dust. $300 cheaper than RE-10, but still pricey for a street pad!