Home › Forum › Ask A Member › 9.9/15 hot spots › Re: 9.9/15 hot spots

#13848
frankr
Participant

    An awful lot of OMC motors are not water cooled around the spark plugs, and I would kind of guess the 9.5 probably is one of them. Unless there is a water cover over the surface of the head, you can almost assume the area is not water cooled. Of course, there is water circulation around the perimeter of the head, and heat is transferred outward to that.

    Truth is, I don’t own a laser gun, and only used thermomelt sticks when a special problem arose. Say I’m Lo-Tech in some areas.