Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: Rage 15 Jet Drive Cooling

Posted by rage15 on 07/06/18 - 1:43 PM
#1

I am the original owner of a 1995 15 foot Rage with the 115 HP OMC engine. After a number of years of dry storage I have been recommissioning our boat. I pulled the engine and jet outdrive unit and cleaned them up. The engine is running and the outdrive is working.

My question for the forum is: the original design of the cooling has the jet drive impeller shoot water into an orifice which then makes a 180 degree turn to be feed back through the transom and after going through a filter it is feed into the engine casting for cooling -- this design seems as if it might be a weak point in keeping the engine adequately cooled -- has anyone modified the design to alternatively install an electric pump pulling water through a thru hull fitting (possibly the drain plug) with a regulator to keep the water pressure under the 20 psi max -- thereby assuring that you are getting full water flow into the engine?

The reason for this enquiry is that I wonder if the complicated original design has historically caused overheating in these Rage engines?

Thanks,

Bob