E-TEC 75: Recurrent Failure of Cooling Plate Fasket

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  E-TEC 75: Recurrent Failure of Cooling Plate Fasket

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Author Topic:   E-TEC 75: Recurrent Failure of Cooling Plate Fasket

boatdryver posted 11-08-2008 05:00 PM ET (US)
Our sailing club re-powered a Montauk safety boat with a new E-TEC 75 in 2007. After only 50 hours the gasket failed between the power head and the exhaust cooling plate, allowing sea water to spray inside the cowling for several hours. Ulitmately BRP replaced the powerhead, along with the starter motor and intake manifold. This past season the same gasket failed again, resulting in warranty replacement of the gasket, starter motor, and intake manifold.
The E-TEC technician [thinks the cause of failure is] mal-fitting surfaces. But this was a different powerhead. The download of engine operations shows no excessive high-RPM time, just a normal pattern of use. I did a search of CW and came up with nothing.
I'm submitting this hoping one of the E-TEC owners or techs can help provide some information as to why this is recurring. Thanks,
JimL
A2J15Sport posted 11-08-2008 09:27 PM ET (US)
The power head is just one surface. The exhaust tower is the other. In my opinion, gaskets rarely just fail. They are typically misinstalled. However for two to fail, I'd be looking at the exhaust tower mating surfase.
Slick 50 posted 11-10-2008 07:53 PM ET (US)
That is an odd leak. Pretty simple. Like pressure is building up. Is the engine propped for top end of red line RPM? The forum here talked a lot about over propping the E-TEC causing much harm.
Slick 50 posted 11-13-2008 07:56 PM ET (US)
What is the WOT RPM the engine runs at normal load?
If the engine is over propped it could over heat and pressure the cooling system.
jimh posted 11-14-2008 02:04 AM ET (US)
[Corrected horsepower to 75-HP. Removed discussion about other websites having discussions. Removed discussions about this discussion. Removed suggestions regarding use of email.]

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Author	Topic: E-TEC 75: Recurrent Failure of Cooling Plate Fasket
boatdryver	posted 11-08-2008 05:00 PM ET (US) Our sailing club re-powered a Montauk safety boat with a new E-TEC 75 in 2007. After only 50 hours the gasket failed between the power head and the exhaust cooling plate, allowing sea water to spray inside the cowling for several hours. Ulitmately BRP replaced the powerhead, along with the starter motor and intake manifold. This past season the same gasket failed again, resulting in warranty replacement of the gasket, starter motor, and intake manifold. The E-TEC technician [thinks the cause of failure is] mal-fitting surfaces. But this was a different powerhead. The download of engine operations shows no excessive high-RPM time, just a normal pattern of use. I did a search of CW and came up with nothing. I'm submitting this hoping one of the E-TEC owners or techs can help provide some information as to why this is recurring. Thanks, JimL
A2J15Sport	posted 11-08-2008 09:27 PM ET (US) The power head is just one surface. The exhaust tower is the other. In my opinion, gaskets rarely just fail. They are typically misinstalled. However for two to fail, I'd be looking at the exhaust tower mating surfase.
Slick 50	posted 11-10-2008 07:53 PM ET (US) That is an odd leak. Pretty simple. Like pressure is building up. Is the engine propped for top end of red line RPM? The forum here talked a lot about over propping the E-TEC causing much harm.
Slick 50	posted 11-13-2008 07:56 PM ET (US) What is the WOT RPM the engine runs at normal load? If the engine is over propped it could over heat and pressure the cooling system.
jimh	posted 11-14-2008 02:04 AM ET (US) [Corrected horsepower to 75-HP. Removed discussion about other websites having discussions. Removed discussions about this discussion. Removed suggestions regarding use of email.]