Reply To: 67 33HP Evinrude running very hot

[Don]

OK…  Well I’m wondering if engines made after this period all had this cooling modification….  Are you sure there is not hole in that new spot already, perhaps just plugged with crud?

I gotta say though, that location really scares me though….Mighty close to those lower exhaust ports.  Exhaust tuning is a tricky thing, one I surely don’t have a strong grasp on.  I would just worry about that new hole pulling water back into those exhaust ports.

So, I’m gonna be conservative here..  If that hole isn’t there already, I don’t think I would add it…