Engine Operation - Honda K20C1 Operating Instructions Manual

Engine Operation

1. Cold start :
Per the guidelines above, it is preferred to let the engine warm up idle or a low load
until it has reached a minimum 50°C coolant and oil temperature.
When the engine is above 60°C, it is acceptable to operate the engine at race pace.
Never go full throttle on a cold engine as this may damage bearings and/or turbo.
2. Hot shut down :
As the F3 is equipped with a turbo, whenever possible, it is preferred, prior to a shut
down, to lower the temperature of the engine on a cool down lap at low throttle (to
avoid spooling the turbo) in order for the turbo temperature to equalize.
Following hot laps at race pace, allow the engine to idle for 60 seconds prior to
shutting down. If a cool down lap is performed, idle for 20 seconds prior to shutdown.
Following this procedure will ensure the turbocharger is cooled down adequately.
While doing so, monitor the coolant temperature on the dash, it should not exceed
95°C to 100°C.
Avoid stopping the engine abruptly right after a hot lap whenever possible.
Failure to follow this procedure may result in damage to the turbocharger.
Dash Warning Indicator Parameters
The sensor indicators will illuminate if any of the following conditions occur:
 Water temperature has reached or exceeds 105°C
• Stop immediately or pull to the pit at low load and allow to cool down.
 Oil Temperature has reached or exceeds 115°C
• Stop immediately or pull to the pit at low load and allow to cool down.
 Oil Pressure is below 240kPa and RPM exceeds 1000
• Adjust oil pressure according the HPD guideline (see Oil pressure above
5000 RPM)
 Battery voltage is below 11.5 V and RPM exceeds 1000
• Pull to the pit and inspect charging system.
 Shift pressure is below 5.5Bar and RPM exceeds 1000RPM
• Pull to the pit and inspect shift pressure system.
 Fuel supply pressure is below 40PSI and engine RPM exceeds 1000RPM
In general, should you noticed an alarm, it is our recommendation to either shut the
engine off immediately of make your way to pit lane under minimal load.
Failure to take action will result is irremediable engine damage.
This document is confidential and is supplied on express condition that it shall not be lent, copied, or
disclosed to any other person, or used for any other purpose without the written consent of Honda
Performance Development.