8
12) Gear Indicator
–
Should be Neutral when starting. Gear position voltage
displayed for technical use
Throttle and Airbox installation
Airbox
Ensure that all fixings on the air box are tight and there are no foreign bodies
that could fall into the engine and cause damage once the engine has been
started. All bolts/screws in the airbox must be lock wired or fixed using
thread lock.
Fluid Levels and Temperatures
Coolant Temperature
When the engine is on track, the coolant temperature should be between
70°C and 90°C.
Coolant Level
When the system is fully bled, the coolant should be full to the top of the
swirl pot, and there should be a minimum of 10 to 20mm in the coolant catch
pot.
Oil Temperature
–
both Wet and Dry Sump Systems
When the engine is on track, the oil temperature should be between 90°C
and 115°C.
Wet Sump Oil Level
The procedure for checking the oil level is as follows. This should be done
with the car on level ground.
With the engine running and the coolant up to 50°C, hold the revs at 3000
rpm. There should be no bubbles in the sight glass, from 3000RPM, blip the
throttle and an air bubble should appear in the sight glass.
The sump is baffled and the oil takes some time to settle.
Dry Sump Oil Level
For cars fitted with a dry sump system the oil level must be checked using the
dip stick supplied. The dry sump oil tank level must be maintained at the TOP
mark on the dipstick with the engine as close as possible to the
recommended on track running temperatures (See Fluid Levels and
Temperatures opposite). The bottom mark is only used when the oil is cold.
The level should be checked AFTER running the engine up to temperature
and after holding the revs at 4,000rpm for ten seconds, to allow the oil to be
scavenged back to the oil tank. The engine should be turned off to check the
level. (The sight glass in the side of the engine should be ignored).
If you do not have the correct dipstick for checking your dry sump tank,
contact a member of the Radical Parts Department immediately. Their
contact details are on page 16.
Dipstick being used to check oil level in a Radical SR3
