This seems to be a common thing in the automotive world , but I haven't read anything on the subject regarding outboard engines other than Wiseco offers coated pistons.
There are two basic types of coatings and there are probably varients of each type.
The first type is a thermal coating that is applied to the top of the piston. The purpose is to prevent heat transfer through the piston thereby raising engine oil temps. My thinking is that this would only be advantageous in a four stroke engine where that heat would be transferred to the oil. Would this be of any benefit in a two stroke engine?
The second type is a Teflon coating that is applied to the circumference of the piston. This would provide a little extra protection should the piston contact the cylinder wall. Anyone tried this?
The Teflon coating is fairly inexpensive, while the thermal coating is more expensive.
There are two basic types of coatings and there are probably varients of each type.
The first type is a thermal coating that is applied to the top of the piston. The purpose is to prevent heat transfer through the piston thereby raising engine oil temps. My thinking is that this would only be advantageous in a four stroke engine where that heat would be transferred to the oil. Would this be of any benefit in a two stroke engine?
The second type is a Teflon coating that is applied to the circumference of the piston. This would provide a little extra protection should the piston contact the cylinder wall. Anyone tried this?
The Teflon coating is fairly inexpensive, while the thermal coating is more expensive.