Quote Originally Posted by SPOOON
very helpful thanks for this,
jsut a question how much does a replacement thermostat from honda cost?

also i think ah8118 meant was what is the advantage of getting an aftermarket thermostat made by mugen over the standard honda one? correct me if i'm wrong.
thanks
A replacement thermostat from honda is ABOUT $40- $50 . Well spent for piece of mind.

The purpose of installing a lower temp thermo , is to circulate coolant into the radiator earlier ( thermostat opens up earlier to ciruclate coolant from the block into the radiator and back again etc. This helps with heat exchange , and increases resistence to overheating ( usefull on the track etc)
A Spoon thermo opens up at 65'c , where a normal B series thermostat opens at 88'c.