by mercman24 » May 12, 2014 8:41 pm
First of all do u have an internal temperature gauge or external?I mean is the sending unit in the waterjacket or on the head?outboard engines especially the carburated ones,really dont have a temperature gauge.they have a worning horn.ur 235hp cross scavanaged outboard ,with thermostats,runs between 123degrees F 163degrees F.the over heat alarm comes on at 210F and stops buxzing at 175F once it is activated.u have two heat syncs on the engine.one on the port head and one on the starboard head.as long as ur thermostats arent sticking and ur water pressure is good, ur fine .remember,when ur up and running,ur at full advance on ur timing.u say its running cool.that tells me the cooling system is working fine.when u are at full advance u are actually putting more heat in the engine by making it fire sooner to accommodate the more amount of fuel ur introducing to the engine.also u are forcing more water because u are at a higher speed.when u slow the boat u slow the water flow.the heat is still in the engine.it usually does climb 10 to 15 degrees once u come back to idle in forward gear.boobs nosecones water cavity isnt as big as stock,its close.as long as ur water pressure gauge is showing good pressure through the RPM range and ur hot horn isnt activating u have no worries.remember u have an outboard not a stern drive :-) :-) :-)
[size=75][b][i][ Post made via Android ][/i][/b][/size] [img]http://www.hydrostreamforums.com/images/mobile/Android.png[/img]