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S550 2017 Grabber Blue Mustang GT Build Thread Profile - S550 Mustangs

JDee

Ancient Racer
1,556
1,602
Exp. Type
W2W Racing
Exp. Level
20+ Years
halfway between Mosport and Shannonville
Did you manage to beat any Vredestein lap times ? I was very impressed by your review of the Vredestein tires and they are reasonably cheaper than AR-1's. Otherwise if they last as much as you describe which I to be fair highly doubt they will be amazing value for the money.
Nope. The Vreds are the fastest tire I have run, they are a treaded 200 TW tire and wear like iron. Just impossible to get these days. Faster than the AR-1 by a full second on a 1.33 second lap at Mosport. And on top of that they work in the rain. I have a brand new set of six Vreds that are sealed up and stored away for when the AR-1s are finished. Hoarding the good stuff. LOL!
 
203
149
Exp. Type
Time Attack
Exp. Level
Under 3 Years
Bulgaria
A day in the Shop - 05.09.2022

So with Autumn part of the season fast approaching I went to the shop to fit my racing break pads again. When I removed them after Serres we noticed that the bolts that hold the pads were moving in the seats:

IMG_0227 (1).jpeg

So I ordered this Raybestos replacements for 12$ from RockAuto Part number (H18225A):

IMG_0364.jpeg

And fitted them with the Gloc Brake pads.

We also noticed that the Ohlins have a lot of oil on them:

IMG_0449.jpeg

And that the left side of the car is very hot. I noticed that my radiator ventilator is blowing very hot air so I guess this is the reason why my Engine temps are going up.
Ether way we fitted all of that as I have a Time attack event coming up.

Dracon Speed Cup Round 3 - 10.09.2022

Since the Ford Fest on Dracon is fast approaching (25.09.2022) I needed a track time on Dracon as I didn't drove the track since last year's Ford Fest (1:10.317) and I didn't test the new tires and suspension. In September all free dates for driving were booked so I instead decided to join the Dracon Speed Cup Time Attack event. The classes are based on Engine size and mods so my TW100 tires put me in a class dominated by BMW M4's and M2's all with a lot of mods (the fastest one is doing 100-200 km/h in 5.9 sec) and on the same tires as me very close in sizes as my 305's. With that in mind I knowed that I will be outgunned but I still decided that I need the test. The Dracon Speed Cup is a big event organised by the track itself and a lot of people go to it in fact there were 82 cars total that day on track making it the biggest track day I ever attended and drove.

First session it took a lot of waiting in the paddock are where I was stationary with started engine for like 10 minutes and my CHT temps were up to 104C (219 degrees) before I even get to the track. Once we get to the track the session was stopped after just 1 lap as the other car different than BMW an Audi S3 blow it's 1.8T engine on the start/finish straight my first lap was 1:08.735 and we all went back to paddock to wait for the track to get clean. Once the car was removed from the track we run again and my next lap straight out of the pits was a blistering 1:07.938 And the car was showing like 110C(230F) CHT. So I did another fast lap but was slower and got back to the pits. The M4 BMW did a 1:04.791 the second M4 did 1:05.353 and the M2 did 1:05.777 so I was 4th in class but obviously outgunned by the Turbo power of the BMW's.

The Second session for the day was at the afternoon and the air temp was up to 30C(86F) so was really hot so hot that in my fastest lap (1:08.05) I saw a predictable 1:07.69 before the final turn but my R10 front brake pads were so overheated that I couldn't brake for it and lost 0.5 seconds in this corner alone. This is the first time I see my brakes overheat so much but it's something I noticed in Serres as well that the R10's are just not enough brake pad for the grip levels of the Nankang AR-1's. I'm guessing new brake pads need to be ordered I plan to pair them with a set of 2 piece rotors which hopefully will help with the heat management. After that session I decided I can't improve more and that there is no worth in waiting another 2 hours for my session to come so I packed and went to see a friend with an amazing Roush charged 700 hp Mach 1 manual with 052 serial number what a lovely car. He was so generous that he gift me a Ford Performance Oil Filter this thing is huge.

However in the Dracon Cup my time was good enough for 13th Fastest out of 82 cars and 4th fastest in my class:

IMG_0524.jpeg

And most importantly a new PB's for me and the Car. So I'm faster even from the pro driver lap of 1:08.020. And the car is very consistent 1:08 car now as I didn't have a lap slower than 1:08.IMG_0523.jpeg

The video showed that I made a lot of mistakes in that lap:


However I'm super happy with how the build is progressing and times that it's showing on both tracks.
Overall the car is easier to drive and much more predictable. And can sustain a lot more cornering G in fact I'm not sure if the G-Forces on my timing device are correct as it showed a 1.40G of cornering loads. That is a lot more than that car ever did.
Next is to see if the brake pads could handle another day of abuse on 25.09.2022 at the Ford Fest and hopefully mange to win it overall again 2 years in a roll.

Lots of plans for winter to address the engine cooling problems of the car as well as to improve the brakes. And hopefully after that to finally mod the motor as it's still very stock.
 
Last edited:
203
149
Exp. Type
Time Attack
Exp. Level
Under 3 Years
Bulgaria
Ford Fest 2022 - 25.09.2022

I have been waiting for this day the whole season. As you probably know winning the Ford Fest 2021 overall with 1:10.317 was something I was wanting for since I bought the car. So as you can imagine I was super eager to get back to that event and defend my first place from last season. I only manage to get 10 or so laps on Dracon so far in 2022 and I was hoping to improve my times on the Ford Fest 2022.

The weather forecast was amazing with a max of 71F. I was hoping that this temps will be good enough for my timing issues to not be a problem and hopefully for the brakes to not overheat. As usual I traveled to the track with my friend with the Focus RS against an amazing Sunrise and was super lucky to get to the track in time for my lucky number 088 to be put on the car. So I was very positive for a lovely day ahead. Also this time for first time there was time attack for Mustangs only with Over/Under 5.0 and Supercharger classes. Not that it mattered but my Over 5.0 class had 6 Mustangs in it so the wildest field since American Muscle Fest 2022. One friend was with his 2017 FBO 5.0 GT for his first time on track with my old 275/35/19 TW240 Zestino's (the ones I won the fest last year).

With that in mind I was ready for my first session the weather was amazing 60F. I went out first lap 1:08.8 compared to last year this lap could be enough for my goal however my goal for the day was to get down to 1:06 and the weather sure was amazing the second lap was way better but just before the last corner my brake pedal got hard and I manage to make the turn but this cost me like 0.31 seconds according to Racebox for a best lap of 1:07.566. Since my brake pads (Gloc R10) ware obviously overheated I decided to not drive more in the day so I can take the car home safe (which I did).

My FBO Friend did a very impressive 1:12.3 which for a first time out in a Mustang on that track is amazing. And the Focus RS did a new PB at 1:09.280 for 2nd place overall. Since I was not driving for the rest of the day (very frustrating) I give my Racebox to my 5.0 FBO friend for the second session. He manage to improve his time by almost 2 whole seconds down to 1:10.680 which placed him 2nd in the Mustang Class in his first time on Dracon. Amazing result. What was even more amazing was that he had almost 10km more top speed on the straight then me even though he exited 10 km bellow me on the straight. This is a huge difference between the cars. I know that FBO cars are a lot more hp than stock Gen 2 but to see the difference on the speeds and lap times surely make a person wonder.

My Friend with the Focus RS managed to improve his time in the next session as well down to 1:08.997 and to keep his 2nd place overall. I on the other hand manage to win the event second time in a row.

IMG_0848.jpeg

And the General Standings

IMG_0847.jpeg

And the mandatory video:


What is next:

Obviously I'm looking for recommendations on Brake Pads/Disks from guys that have driven on Nankang AR-1's At the moment my feeling is to try step up to R12 and see how that goes probably with 2 Piece Slotted Baer disks. But if someone have better recommendations to stop the massive 305/30 AR-1's I'm all ears.
 
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200
234
Exp. Type
HPDE
Exp. Level
3-5 Years
Raleigh, NC
Ford Fest 2022 - 25.09.2022

I have been waiting for this day the whole season. As you probably know winning the Ford Fest 2021 overall with 1:10.317 was something I was wanting for since I bought the car. So as you can imagine I was super eager to get back to that event and defend my first place from last season. I only manage to get 10 or so laps on Dracon so far in 2022 and I was hoping to improve my times on the Ford Fest 2022. The weather forecast was amazing with a max of 71F. I was hoping that this temps will be good enough for my timing issues to not be a problem and hopefully for the brakes to not overheat. As usual I traveled to the track with my friend with the Focus RS against an amazing Sunrise and was super lucky to get to the track in time for my lucky number 088 to be put on the car. So I was very positive for a lovely day ahead. Also this time for first time there was time attack for Mustangs only with Over/Under 5.0 and Supercharger classes. Not that it mattered but my Over 5.0 class had 6 Mustangs in it so the wildest field since American Muscle Fest 2022. One friend was with his 2017 FBO 5.0 GT for his first time on track with my old 275/35/19 TW240 Zestino's (the ones I won the fest last year). With that in mind I was ready for my first session the weather was amazing 60F. I went out first lap 1:08.8 compared to last year this lap could be enough for my goal however my goal for the day was to get down to 1:06 and the weather sure was amazing the second lap was way better but just before the last corner my brake pedal got hard and I manage to make the turn but this cost me like 0.31 seconds according to Racebox for a best lap of 1:07.566. Since my brake pads (Gloc R10) ware obviously overheated I decided to not drive more in the day so I can take the car home safe (which I did). My FBO Friend did a very impressive 1:12.3 which for a first time out in a Mustang on that track is amazing. And the Focus RS did a new PB at 1:09.280 for 2nd place overall. Since I was not driving for the rest of the day (very frustrating) I give my Racebox to my 5.0 FBO friend for the second session. He manage to improve his time by almost 2 whole seconds down to 1:10.680 which placed him 2nd in the Mustang Class in his first time on Dracon. Amazing result. What was even more amazing was that he had almost 10km more top speed on the straight then me even though he exited 10 km bellow me on the straight. This is a huge difference between the cars. I know that FBO cars are a lot more hp than stock Gen 2 but to see the difference on the speeds and lap times surely make a person wonder. My Friend with the Focus RS managed to improve his time in the next session as well down to 1:08.997 and to keep his 2nd place overall. I on the other hand manage to win the event second time in a row.

View attachment 79649

And the General Standings

View attachment 79650

And the mandatory video:


What is next:

Obviously I'm looking for recommendations on Brake Pads/Disks from guys that have driven on Nankang AR-1's At the moment my feeling is to try step up to R12 and see how that goes probably with 2 Piece Slotted Baer disks. But if someone have better recommendations to stop the massive 305/30 AR-1's I'm all ears.
Hey bud, nice win!
Do you have R-10's all around? Or do you have R-12's in front?
 
83
143
Exp. Level
5-10 Years
Australia
Hey there,
I'm just like you running 305AR1s here in Australia and I'm running R16 at the front and R10 on the rear and the stopping power is amazing. I can safely reduce by braking distances by extra 50m and these pads will still pull me up.
I used to run Hawk pads and these are on the next level.
Couple of times it felt like there was not enough bite from the rear and the front were doing all the work. Maybe it was just me not being used to them, so I'll see how I go next time and play around bit more maybe with trail braking and modulation.
Everything was new to me on that day, new tyres, new brakes, new seat and harness, new track, new alighment set-up.

Cheers20220717_180459.jpg20220810_172708.jpg20220823_205519.jpg20220823_174343.jpg20220823_174414.jpg20220827_103755.jpg
 
203
149
Exp. Type
Time Attack
Exp. Level
Under 3 Years
Bulgaria
Hey there,
I'm just like you running 305AR1s here in Australia and I'm running R16 at the front and R10 on the rear and the stopping power is amazing. I can safely reduce by braking distances by extra 50m and these pads will still pull me up.
I used to run Hawk pads and these are on the next level.
Couple of times it felt like there was not enough bite from the rear and the front were doing all the work. Maybe it was just me not being used to them, so I'll see how I go next time and play around bit more maybe with trail braking and modulation.
Everything was new to me on that day, new tyres, new brakes, new seat and harness, new track, new alighment set-up.

Cheers

Car looks amazing. What rotors are this I'm on my OEM rotors as well but they are almost gone at least in the front. So I think I will be looking into new pads and rotors.
 
413
484
Exp. Type
Time Attack
Exp. Level
3-5 Years
SoCal
This is my feeling as well and probably 2 piece rotors to put the weight down and to better cool the brakes.
I would skip R12's and go straight to R16's. I used to run R12/10 on my car and they were great but still weren't maximum braking potential. These heavy cars need some serious brakes.
I would've gone R16/12 but I switched to Hawk DTC60 pads as NASA incentives Hawk pads.
 
203
149
Exp. Type
Time Attack
Exp. Level
Under 3 Years
Bulgaria
I would skip R12's and go straight to R16's. I used to run R12/10 on my car and they were great but still weren't maximum braking potential. These heavy cars need some serious brakes.
I would've gone R16/12 but I switched to Hawk DTC60 pads as NASA incentives Hawk pads.
so can you compare DTC60 to R16 which is better I see most NASA guys like Flyhalf are on DTC70 even. My point is that I still want to keep the car kind of street/track car and not full blown race car though the AR-1's are almost R-Compound tires and need Race level of braking to be competitive with them and wonder if R12/R10 combo will be enough to not overheat. I know my track is very brake intensive so obviously R16/R12 may be a better solution but it's not a go to track solution.
 
238
193
Exp. Type
HPDE
Exp. Level
Under 3 Years
MD
I second what @Ewheels has said. This is my third year on R12/R10 and will be moving up to R16/R12 combo. The 12/10 combo is great as far as modulation and street ability goes. It does squeak on the street and you might get some looks but that's about it. I caught an amazing deal (cost of shipping) on 2 sets of used Carbotech XP20 which are R16 equivalent. Can't wait to use them in a couple weeks. I am on Toyo RRs so not a street tire. Alessandro is running on Hoosiers though so the DTC70s make sense, but I believe he has switched to CSG pads. AT that point I think its preference. As far as cooling goes, I would look into the brake deflectors from Vorshlag or @GTP . Great cooling solution.

With more aggressive compounds comes harder brake dives so I am hoping to increase front spring soon...somehow

so can you compare DTC60 to R16 which is better I see most NASA guys like Flyhalf are on DTC70 even
I thought that's how they relate to each other but in an old post from Tim at OP Mustang , he said that the 70s are closer to the R16s. Not sure.
 
Last edited:
413
484
Exp. Type
Time Attack
Exp. Level
3-5 Years
SoCal
so can you compare DTC60 to R16 which is better I see most NASA guys like Flyhalf are on DTC70 even. My point is that I still want to keep the car kind of street/track car and not full blown race car though the AR-1's are almost R-Compound tires and need Race level of braking to be competitive with them and wonder if R12/R10 combo will be enough to not overheat. I know my track is very brake intensive so obviously R16/R12 may be a better solution but it's not a go to track solution.
I have been told by many that Hawk DTC70's are for Hoosier-level tire grip and DTC60's are for the super aggressive street tires (3R, A052, etc).
I would assume Gloc R18's are similar to DTC70 so I would think DTC60 and R16 would be very similar.

My DTC60s are fine on the street, they still have acceptable bite when cold but I also don't drive my mustang on the street all that often.

Whether you choose R16 or R12 is up to you. Do you prioritize street use or track use more? Or you could buy a street set and track set of pads/rotors and switch back and forth.
Dual-use cars are tricky; finding a middle ground means you will give up qualities on both ends.
 
Last edited:
203
149
Exp. Type
Time Attack
Exp. Level
Under 3 Years
Bulgaria
I second what @Ewheels has said. This is my third year on R12/R10 and will be moving up to R16/R12 combo. The 12/10 combo is great as far as modulation and street ability goes. It does squeak on the street and you might get some looks but that's about it. I caught an amazing deal (cost of shipping) on 2 sets of used Carbotech XP20 which are R16 equivalent. Can't wait to use them in a couple weeks. I am on Toyo RRs so not a street tire. Alessandro is running on Hoosiers though so the DTC70s make sense, but I believe he has switched to CSG pads. AT that point I think its preference. As far as cooling goes, I would look into the brake deflectors from Vorshlag or @GTP . Great cooling solution.

With more aggressive compounds comes harder brake dives so I am hoping to increase front spring soon...somehow


I thought that's how they relate to each other but in an old post from Tim at OP Mustang , he said that the 70s are closer to the R16s. Not sure.
I'm only concerned with heat I honestly thing that 2 piece and R12/R10 should be good enough. Not a fen of Hawk because they are not that much rotor friendly as GLoc from what I have read but I'm sure they are great pads as well. R16/R10 probably will make going to the track with the car dangerous which is the other reason I want the lower compound.Will figure it out soon hopefully.
 
203
149
Exp. Type
Time Attack
Exp. Level
Under 3 Years
Bulgaria
Whether you choose R16 or R12 is up to you. Do you prioritize street use or track use more? Or you could buy a street set and track set of pads/rotors and switch back and forth.
Dual-use cars are tricky; finding a middle ground means you will give up qualities on both ends.
That is clear but we in Bulgaria don't have such good developed track community as you guys so I only have very few competitive events and they are as we seen last time out dominated by the M2's, M4's and anything BMW. Obviously the Mustang is great car but it's just not competitive to the highly modified for track BMW's. Which is why I want a Dual-use car though at that point is not exactly Dual-use.
 

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