Sunday, 30 July 2017

Nugget Nationals Winton - Easy PB is still a PB

This was the first track day with the new brakes and tyres combo so the 3 second improvement came easier than usual. If in doubt, just throw money and mods at it!

Stock as a rock: 1:47.4220
Better brakes/tyres: 1:44.1580

This update is 3 months late, so I'll let the pictures do the talking. But a huge thanks as always to the crew and Nugnats for another great event, and to Steur Imagery for some awesome pics!

Attacking the S. Love this shot!!

Why is it I can always see a few tenths when watching the video but had no idea on the day?!

More action shots courtesy of Steur Imagery

Feels (and looks) like it corners fairly flat. Not bad for OEM suspension.

Forgot who I got this shot from, but thanks! WTB wing!

How the RS3s looked after some abuse

Kicked up a lot of dust and muck in general all over myself, and check out how dusty the PMU pads are.

Drained the battery on the GoPro when I forgot to turn it off so I was charging between sessions.

Some random pre-Winton work I did....
Flash back: My own fire extinguisher mount. Just another Import Monster one.

Battery charger cable fitted and found the perfect little gap to tuck it into.

Investigating the metallic ping led me to adjusting the handbrake.

For reference:
Natsoft Official Timing - 1:44.1580
Racechrono Timing - 1:44.18
Racechrono Optimal - 1:43.41
Laps: 29

Power/Handling/Brakes: Stock
Tyres: Hankook R-S3 (32 psi hot, Track Count:1)
Engine Oil: Redline 5w30
Diff/Gearbox fluid: Motul Gear 300 75W90

Tracking App: RaceChrono Android
External GPS: Qstarz GPS (5Hz)
Camera: GoPro Hero 3
Overlay Software: RaceRender Povo Edition

Sunday, 9 July 2017

The power of the BRZ revealed. Dyno shootout!

When buying a used car you never really quite know how much power there is at the engine. If you're lucky you might get a monster engine making more than expected, but if you're unlucky, you might have an old tired engine.

So one way to find out is to put it on the dyno and luckily enough, I managed to score a spot with the Nugget Nationals dyno day at Weltmeister Eastside literally down the road from me.

How much power did I think I would have? The stock engine is 147kw on paper... Drivetrain losses... Coming up to 4 years old... Feels healthy with "only" ~15,000km on the odo... Heavier-than-stock tyres... So maybe 100kw at the wheel?

The results:
Run 1: 105.3
Run 2: 107.1
Run 3: 107.9 kw

Woohoo! Got more than my estimated 100kw so no complaints!

Fellow crew and BRZ mate (Hi Jorge!) was also there with his basically-new MY17 BRZ with its more powerful 152kw engine on the same dyno, same day, under the same conditions. It is no better baseline to compare my engine to and he got a mighty 110kw.

Given everything, with just under 3kw difference between us, I'm happy my engine is fit and healthy! Now lets go racing! 😁

Hanging out with some cool S2Ks

Game time!

The results! I can see the infamous torque dip now despite not really feeling it all that much whilst driving.

See anything different? This is not me. This is the MY17 BRZ!

Super clean Evo 6 TME in the best colour

Justice... Salvation... Love Others... Human Dignity... Compassion... 

TME and a heap of nuggets

I never heard of Weltmeister Eastside prior this event because I've never had a Porsche

Love these tofu cars! They're the reason I almost got a 86 GTS instead of a BRZ

 
Stood underneath this 86 whilst we watched the runs and kept looking up to admire the suspension and brakes 🤤








Sunday, 2 July 2017

Free upsize on tyres? Yes please! Brakes? Destroyed.

The stock tyres lasted about half a track day before they felt like they were too hot. They could survive another half-day again, but where's the fun in doing half a day so I decided to grab myself some Hankook RS3 tyres since all the cool kids were using them and they are rather affordable right now.

So I ordered and pre-paid for the stock size (215/45R17) but come the day of fitment they were out of stock and if I insisted on that size they will need to order it in and it'll cost me more than the original price. HOWEVER they offered me a set of 225/45R17 at no extra cost me. Couldn't say no to a free upsize! I did the maths, since the aspect ratio is the same, I will have a slightly larger rolling diameter of 1.6% which is well within acceptable tolerances.

The stock rotors looked like rubbish after the track day so replacing them was high on the list. I suspect something happening with the OEM pad compound once they get hot which caused the damaged so they also need to go. The replacement front rotors are DBA slotted T2 Street Series and the rears are OE replacement. I went for a slightly better front to see if they can handle the abuse I'm going to dish out. My current rears don't look too bad so OE replacement should do. I could machine the OEM ones I'm swapping out for later reuse.

Pads are Project MU HC+800 all around. Tried and proven in all my previous cars so happy to go back to them. I did notice they have a slightly smaller surface area than the stock pads though! Less is more? One way to find out...

Fluid is ATE Super Blue. Previously I was always using RBF600, but I had to bleed it after every track day, so I'm happy to give ATE a go, and at half the price of RBF600, it's worth a shot! Also the colour-changing-ness when bleeding the fluid is great!

The fail/upcoming fail task: On my test drive after fitting the brakes, within the first 50 meters I heard a loud metallic ping noise. I pulled over for a closer inspection and all looked well, went for drive to bed the brakes and the noise never happened again and the car stopped on dime. But I can't shake the feeling about that noise. Maybe it was just the shims settling, or maybe it's the handbrake spring popping off? Either way, I think I'll need to go back and have another look soon 😢

Want grip? Go to the masters!

Fat 225s! I like it, looks more and more like a semi... Maybe I'm just dreaming of semis!

Alignment specs. Extra ordinary since there is no camber adjustment with the factory suspension.

Brake goodies acquired. Thank you eBay sales, Autosphere and OTR! Time to get to work...

WTH! Moss in the brake master cylinder reservoir? I thought this was a new car...

 
The rear rotors, not actually looking all that bad?

Rear pads: New vs Old

 
Dirty shims... Less dirty shims

DBA OE Replacement rotor... with way too many holes drilled into it. Better not let too much dirt into the handbrake mechanism 😟

 
Swapping the pad shims over

One corner done... 3 to go!

Got dark so left it like this overnight.

The fronts. Looks properly messed up to me. The scoring is deep enough to feel a ditch when I run my fingers over it.

 
Closer inspection. Results are the same on both front rotors.

Pad compound I suspect overheated and did the damage?

All the front OEM pads and shims, cleaned, I think... Don't look so clean in the photo.

OEM Pad compared the PMU HC+. There's actually less surface area in the HC+ ?

There's 2 holes that I could use a bolt on to pop the rotor out. Best idea ever!

DBA T2 Slotted Street Series rotor. Looks pretty neat!

 
Cleaning that extra bit of paint next to the hat was a bit annoying.

Everything put back together!

 
ATE Super Blue! So cool seeing the colour come through the line during the flush.

 
BRZ tow hook vs Outback tow hook. Looks like I can borrow this for the next track day!

Despite how many of these cars are on the road I never paid attention to the rear much. Maybe cos I don't like the tail lights. But with the lights on, in the dark and with some LED lights (courtesy of the previous owner), it doesn't look all that bad!