QUESTION
I am currently looking for a remote thermostat assembly for my 1986 Lotus Turbo Esprit HC
If this is not available, what's the alternative?
B.S. - USA
ANSWER
Unfortunately these remote thermostats were made obsolete many years ago.
From experience this thermostat arrangement and its location are far from ideal.
1) when the thermostat fails , it stays shut and the engine has the potential to overheat.
2) the thermostat should be located in or near the cylinder head to ensure the cooling system operates effectively.
It would be advantageous to install a later water pump with integral thermostat housing and eliminate the remote thermostat.
At the same time the temperature sender unit should be moved from the alloy transfer pipe and installed in the water pump housing.
This is the correct location for the temperature sender so it looks at the cylinder head temperature in the unusual event of coolant loss.
In the standard configuration the temperature sender unit is located in the transfer pipe that runs over the top of the alternator.
If there is any coolant loss and the fluid level drops, the temperature sender unit is no longer in contact with coolant and therefore unable to monitor the true engine temperature.
Copyright © 2014 Lotus Marques
I am currently looking for a remote thermostat assembly for my 1986 Lotus Turbo Esprit HC
If this is not available, what's the alternative?
B.S. - USA
ANSWER
Unfortunately these remote thermostats were made obsolete many years ago.
From experience this thermostat arrangement and its location are far from ideal.
1) when the thermostat fails , it stays shut and the engine has the potential to overheat.
2) the thermostat should be located in or near the cylinder head to ensure the cooling system operates effectively.
It would be advantageous to install a later water pump with integral thermostat housing and eliminate the remote thermostat.
At the same time the temperature sender unit should be moved from the alloy transfer pipe and installed in the water pump housing.
This is the correct location for the temperature sender so it looks at the cylinder head temperature in the unusual event of coolant loss.
In the standard configuration the temperature sender unit is located in the transfer pipe that runs over the top of the alternator.
If there is any coolant loss and the fluid level drops, the temperature sender unit is no longer in contact with coolant and therefore unable to monitor the true engine temperature.
Copyright © 2014 Lotus Marques