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  #1  
Old 06-05-2019, 01:01 AM
tryathlete tryathlete is offline
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5.7 MCX 350HP closed cooling winterization checklist

Can anyone owning a 5.7MCX equipped Prostar 197TT let me know what their winterization checklist is?

Thanks!
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  #2  
Old 06-14-2019, 04:35 AM
tryathlete tryathlete is offline
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Can anyone owning a 5.7MCX equipped Prostar 197TT let me know what their winterization checklist is?

Thanks!
Anybody have a checklist for a 5.7 MCX?
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  #3  
Old 06-23-2019, 11:53 AM
88 PS190 88 PS190 is offline
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It's the same as any other boat only don't drain the block.

You want to drain raw water then flush pink antifreeze through
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  #4  
Old 06-23-2019, 02:56 PM
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JohnE JohnE is offline
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You definitely want to drain the block. I had that motor for years, and it's pretty simple. Uncouple the hoses coming from the manifolds and let them drain. Pull the knock sensors on each side of the block and let it drain. (depending on year of the MCX, it may have a plug on one side and knock sensor only on the port side). Disconnect the heater hoses (if there is a heater) and let it drain. Run pink antifreeze through heater core. Put hoses and plugs back together, and fill the motor with pink antifreeze through the top of the J hose by disconnecting the hose at the thermostat housing.

You can also choose to fog the engine before draining the water by spraying fogging oil through the air intake, or fog by spraying into the cylinder. I stopped fogging mine in later years.
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  #5  
Old 06-24-2019, 06:46 AM
tryathlete tryathlete is offline
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Originally Posted by JohnE View Post
You definitely want to drain the block. I had that motor for years, and it's pretty simple. Uncouple the hoses coming from the manifolds and let them drain. Pull the knock sensors on each side of the block and let it drain. (depending on year of the MCX, it may have a plug on one side and knock sensor only on the port side). Disconnect the heater hoses (if there is a heater) and let it drain. Run pink antifreeze through heater core. Put hoses and plugs back together, and fill the motor with pink antifreeze through the top of the J hose by disconnecting the hose at the thermostat housing.

You can also choose to fog the engine before draining the water by spraying fogging oil through the air intake, or fog by spraying into the cylinder. I stopped fogging mine in later years.
Thank you Gentlemen. Iíll follow your lead when itís time to call it quits later this year!
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  #6  
Old 06-24-2019, 08:39 AM
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CantRepeat CantRepeat is offline
 
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Ah FU*K you just had to say it didn't you!!

WINTERIZATION!!!
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  #7  
Old 06-24-2019, 12:20 PM
88 PS190 88 PS190 is offline
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Quote:
Originally Posted by JohnE View Post
You definitely want to drain the block. I had that motor for years, and it's pretty simple.
Does he or does he not have a closed cooling system which would have antifreeze in the block/heads/recirc pump/ thermostat and lake water in the manifolds/transcooler/heat exchanger.
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  #8  
Old 09-09-2019, 03:48 PM
tryathlete tryathlete is offline
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There no closed system on my TT. Iíll drain them fill via Thermo housing hose after RE-plugging and connecting everything.


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  #9  
Old 09-09-2019, 04:02 PM
stig stig is offline
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seems like a lot of work. I just take a huge rubbermaid tub I put an old radiator hose onto, remove my raw water line from the crank pump and put this onto it. Fill it with RV antifreeze and then watch it get sucked in and come out the back.

Luckily I don't get cold winters in my garage but if no one sees an issue with that way I'd say it's the easiest.
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