Merc 150 Operating Temp

jasonbailey

Petty Officer 1st Class
Joined
Jul 25, 2004
Messages
253
What is the operating temprature of a fully warm 2001 150 EFI at WOT under a normal load?

Thanks in advance.
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
27,148
Re: Merc 150 Operating Temp

Something above 140*, and below 200*, I would think, depending on load.
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,616
Re: Merc 150 Operating Temp

What is the operating temprature of a fully warm 2001 150 EFI at WOT under a normal load?
Depends on lake temp and distance run as a Mercury will get hotter the longer the distance as block only hold about 2 quarts of water. Normal operation in 80? water is about 145-155?
 

jasonbailey

Petty Officer 1st Class
Joined
Jul 25, 2004
Messages
253
Re: Merc 150 Operating Temp

Thanks guys. That's what I thought. We were in 78 degree water on Sunday, and it got a little too warm. It crept up to about 200 at WOT. We throttled it back and and let it cool down, and took our time getting back. New impeller and poppet valve time.

Thanks very much.
 
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