Greetings...

I have 1997 Mercury HP525SC motors witch came with CMI headers and Silent Choice.

Running the motors to fill with anti-freeze is messy at best. I can catch the anti-freeze from the thru-transom exhaust but not the flow from the Silent Choice.

If I catch the anti-freeze by disconnectting the water lines to the headers will heat from idling the motors damage the headers, fiberglass...?

Is there a better way?

Joel

I have know Idea how to answer your question. But I can give you a tongue lashing for bring up Winterizing in the middle of August!!!!!

if you don't have water going to the headers they'll get hot, fast. They'll start to burn up the rubber couplings too.

When i winterize, i don't run the engine. I pull off the hose coming from the water pump, stick a funnel in it, and pour in antifreeze until it comes out the water pickup. That covers the water pump, oil and power steering coolers, and outdrive. Then i drain all the water from the engine and exhaust manifolds, and remove the thermostat housing. I pour a small amount of antifreeze into the thermostat housing and into the hoses for the exhaust manifolds and let it drain out into the bilge, then i close the drain ports and pour antifreeze in everything until it's full. Then let it sit for a few minutes and top it off again before putting it all back together.

Mike,

What can I say, I'm a snowmobiler!

Joel