760 L4-2320cc 2.3L SOHC Turbo B23FT (1984)
OPENING PRESSURE:
Black cap, marked 75 kpa = 65 - 85 kpa ( 9.4 - 12.3 PSI)
Grey cap, marked 150 kpa = 145 - 155 kpa (21.0 - 22.5 PSI)
To leak test the cooling system, apply pressure at 60 kpa (8.7 PSI). Maximum allowed pressure drop is 3 kpa (0.4 PSI) in three minutes.
^
Air Guide
Make sure the air guide in the spoiler is properly installed.
^
A/C Condensor, Intercooler and Radiator
Check that the A/C condensor, intercooler and radiator are free from foreign objects. Make sure that the vertical sealing strips on the A/C
condensor are in position. If loose, they should be glued back in position.
^
Cooling Fan
Check cooling fan type and function. The fan clutch should increase the fan speed when it is exposed to an air temperature of 65-85~C (149-
185~F).
^
Electrical Cooling Fan
Check the function by connecting the two wires at the thermal switch, located in the lower radiator hose. Ignition ON. The fan should start and
rotate counter-clockwise as viewed from the front (as illustrated).
^
Ignition Timing
Correct timing is 12 +/- 2~ BTDC at 750 rpm. Make sure that the ignition is advanced to approximately 25~ when the electrical cool in fan
starts (see Service Manual 760 Turbo, TP 30684/1, Group 26 Page 59).
2.
UPGRADING, B23FT WITH AUTOMATIC TRANSMISSION
If the temperature gauge is reading high or the engine overheats during extended idle and/or in stop-and-go city traffic, the following upgrading can
be carried out.
^
Radiator
The radiator core on the B23FT is made of aluminum. For improved cooling capacity at idle, a radiator with copper core is available under P/N
1266053-6.
^
Electrical Cooling Fan Switch
For earlier engagement of the electrical cooling fan, a 91~C (196~F) switch, P/N 1378504-3, is available. The new switch replaces the existing