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:

Shockworks Suspension

Time for a change in suspension, the Z has outgrown the old Cusco Zero2's. I picked up a set of Shockworks due to good feedback from others and local support. So after chatting to Chris at Shockworks, he supplied a set of 370Z shocks valved for use with semi slicks. Spring rates are 14 kg/mm front and 8 kg/mm rear. Initial driving on the street showed that the car has good ride compliance and the steering feels more direct now. The ride is more firm than the Cusco's but doesn't crash when going over bumps. It also seems flatter around sweeping corners at moderate speed. A big thanks to Macgillaz for the installation help and Chris for the setup advice. I'm looking forward to test and adjust these soon at the track.

Exe Track Weekend - Winton Motor Raceway

Weather:
Saturday - high of ? degrees Celcius
Sunday - high of 16 degrees Celcius

Tyres:

Hankook Z214 (final time I used these tyres)

Lap times:
SaturdayS1: 2:22.1090 2:01.8120
S2: 1:56.4850 1:38.9480 1:37.4140 1:38.1540 1:38.4280 1:37.7430 1:37.9450 S3: 1:46.9850 1:39.1160 1:41.5810 1:41.4080 1:38.4730 1:38.9870 1:38.2280 1:37.2860 S4: 1:44.5000 1:37.6140 1:40.0690 1:59.0480

Sunday
S1: 2:07.2560 1:40.1420 1:39.2340 1:38.8600 1:36.8980 1:37.2390
S2: 1:51.8720 1:39.9790 1:38.3590 1:37.8890 1:36.8840 1:37.1480
S3: 1:55.4610 1:38.9630 1:37.9270 1:37.9340 1:37.7710

Nugget Nationals - Winton Motor Raceway

Weather:
High of 18 degrees Celcius

Tyres:
Hankook Z214

Difference in car setup:

New Tomei Expreme Ti exhaust

Z1 Motorsports rear subframe bushing collars

Lap times:
S1: 2:03.5900 1:40.8940 1:39.8170 1:38.1150 1:37.5290 1:41.7370
S2: 1:46.7620 1:40.5690 1:39.9110 1:37.8440 1:37.5060
S3: 1:46.9400 1:40.7990 1:53.8850 1:48.7730 1:37.9270
S4: 1:56.4850 1:39.2600 1:37.5200 1:38.8240 1:38.2690
S5: 1:57.1890 1:38.3240 1:37.5960 1:36.9580 1:37.9890 1:37.1460

Tomei Expreme Ti Exhaust & Z1 Motorsports Rear Subframe Collars

A big thanks to @macgillaz for the help and support installing a couple of things on the Z. Finally got the @z1motorsports rear subframe collars installed as well as the @tomei_84 cat-back exhaust. Don't mind the dirt on the car.