New DBA rear rotors

After 8 years of hard track day driving, the rear rotors on the Z cracked at the last track day in October 2019.

I have replaced them with another pair of DBA 4000's, this time with the newer T3 slot design. 

Thank you to Michael at Autosphere for setting me up with these.

Rear left wheel bearing replacement... again!

Today the left rear wheel bearing and hub on the Z was replaced again. The existing one was replaced 5 years and 10,000 km ago. This bearing destroyed itself again after many right hand turns at Winton.

The suspected cause of its early demise was that the 32mm nut securing the drive shaft to the hub became loose over time and the amount of play allowed movement in the bearing that should not have occurred. This accelerated the wear within the bearing unit itself.

A new hub and bearing unit has been installed and the drive shaft nut now has Loctite applied and retorqued to spec. A big thank you to @silas.andrianto for the heavy lifting and mechanical advice. Time to order a spare hub and bearing!

Nugget Nationals - Winton Motor Raceway

Weather:
High of 20 degrees Celcius, sunny

Hot tyres pressures:

33 PSI front and rear, targeting 32 PSI

Suspension settings:

6/12 front, 6/12 rear

Difference in car setup:
New Shockworks suspension
Kumho V70A tyres

Lap times:

S1: 1:55.3330 1:43.3430 1:43.2830 1:40.9890 1:41.2260 1:40.6760
S2: 1:49.8400 1:40.2380 1:40.4920 1:41.1290 1:43.4690
S3: 1:46.9280 1:41.2160 1:40.8540 1:40.0040 1:39.2770 1:40.1440 1:40.5300 S4: 1:49.6610 1:40.3910 1:41.1060 1:40.0860
S5: 1:52.4510 1:40.6580 1:41.1990 1:42.0110 2:08.3180 1:46.6130

Comparison with PB lap (1:36.29, lighter line):

Hi and lo speeds:

Video of the best lap:

AROCA Sprints - Sandown Motor Raceway

Weather:
High of 15 degrees Celcius, rainy

The day ended early due to track being very wet.

Hot tyres pressures:
33 PSI front and rear, targeting 32 PSI

Suspension settings:
6/12 front, 6/12 rear

Difference in car setup:
New Shockworks suspension
Kumho V70A tyres
Lap times:
S1: 3:25.9025 1:41.8766 1:34.4478 1:32.3917 1:32.7185 1:31.8400 1:30.4173
S2: 1:45.1877 1:31.2483 1:30.8925 1:30.3069 1:31.0761 1:28.2336 1:27.6356 1:27.6489
S3: 2:08.0169 1:44.3176 1:38.0716 1:36.6967

Comparison with PB lap (1:27.16, lighter line):

Hi and lo speeds:

Video of the best lap: