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1979 318 inboards

lastcall2013

New member
has anyone else ran into these engines running hot i have changed about everthing and still they run upwards of 200 at 4000 rpm with 140 thermosts i have heard that the late 70s 318s just ran hot ,only thing left to do is change out heat exchangers ,have allready flushed appear ok,anyfeedback would be helpful,before i drop $1600 bucks on two new exchangers
 
Have you verified the temp with an infared gun? Good raw water discharge? check for leaks on the suction side. make sure your timing is spot on and the advance is working. You can have the heat exchangers cleaned at a radiator shop. and how long Are you runniing your 318 at 4k RPM? I never cruise nearly that high.

will
 
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