argus1
Member
- Apr 12, 2015
- 196
- Boat Info
- 2011 350 Sundancer
- Engines
- MerCruiser 377 MAG ECT w/Bravo III Drives, Axius
I am installing a new thermostat. My question is, How clean do the mating surfaces for the thermostat housing need to be? Do I clean the surface on the engine block to be shiny metal. I got the old gasket material off but it looks like it may be still covered with old sealant. I want to make sure that I have a good contact surface for the metal contacts in the new gasket. What is best way to make sure that the surfaces are clean enough without taking a chance of damage. Thanks in advance.