Track Log – Somniplex

Road Atlanta 2021 Temp Spike

Water temp max 287F. Rise & drop with rpm, lagging.
Oil temp max 226F
Coolant pressure (normal 18-24psi), 18-37psi
No steam, no sign of leak.
Radiator was cool to the touch minutes after race end.
Reservoir empty.
No issues detected from car. It drove fine, drove into trailer at end of race, and into garage once home.
Tested thermostat, passed.No apparent obstructions in radiator.
Pulled water pump, intact and good.
Pulled head, gasket has no visible signs of breakage/crack. Odd wave between 1&2 in the gasket.

Catch can

For the Road Atlanta weekend, we changed the crank case ventilation from the intake manifold to a catch can, Turner’s. It was likely not designed for race use as ~50% of the oil aerosol passed through it and settled throughout the engine bay.

Engine 2.1

Sent the block out to be re-honed. Its condition was good and main bearings look so good they’ll be reused. The pistons have been coated in order to fill the small increase in cylinder bore diameter resulting from the honing.

Another minor casualty

Wheel nuts were not torqued. Fortunately the wheel stayed attached for the few laps of the session. Required replacement of the FR bearing, studs and wheel. May be able to have the wheel repaired.

Transmission Sensor

Had the sensor replaced while the box was out of the car. Before installing the transmission, checked the voltage output on the position sensor. Found this sensor provided reverse from expected. Low gears, higher V steps down as gear position increases.