Posts: 4
Threads: 2
Joined: May 2023
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Home Port: Buzzards Bay
Vessel Info: 2004 31 Open
6.0 Crusaders
My engines get up to 180 at the dock.....
Posts: 463
Threads: 3
Joined: May 2018
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7
Home Port: Ashtabula, OH
Vessel Info: 1986 Tiara 3600 Open, Crusader 454's
I have the 170 degree thermostat in mine. What thermostat does your specifc motor call for?
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Posts: 53
Threads: 1
Joined: Jul 2015
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Home Port: NJ
Vessel Info: 2001 Tiara 35 Open Cummins 370
180 seems high considering Buzzards Bay water temps in May. Are the engines idling at 180 degrees? More importantly, what temps are the engines running at cruise speed? What is the history of the vessel? How long have you owned it? When were the water pump impellers and exhaust risers last changed? Have you confirmed the temps with an infrared temp gun?
Posts: 4
Threads: 2
Joined: May 2023
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Home Port: Buzzards Bay
Vessel Info: 2004 31 Open
6.0 Crusaders
I have had the boat five years. The engines usually run about 180. The manifolds were just replaced. The port engine got up to 200 within a minutes this weekend before it started to cool off.
Posts: 229
Threads: 45
Joined: Dec 2016
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2
Home Port: Long Island Sound
Vessel Info: 3100 Open, 2002 Model Year, 8.1L Crusaders
What motors are you running? I have 8.1 Crusaders and mine idle at 140 and get up to 175 when running. The thermostats don't even open until I throttle up.
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Joined: Oct 2021
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Home Port: Michigan City Port Authority Marina
Vessel Info: 1997 Tiara 3100 Open 454 Crusaders
I have 1997 454 XLi Crusaders that are running properly (fingers crossed). Just flushed/changed coolant. Original Crusader OEM parts manual shows a 170 degree thermostat. I run just a tad under 180. That temp pretty much hold regardless of what my RPMs are once warmed up. Temp surges 10 degrees or so when I shut engines off.
[Tiara Open] What temp should my Crusaders run?
