boat engine temperture

agaldamez

Seaman
Joined
Mar 31, 2013
Messages
55
Boat was running about 120 in temperature always. i read that 160 was normal. so we figured out my thermostat was bad so i changed it.

So now the boat gets to 160 in a about 10 minutes but got up to 170 about 15 minutes.

This was done with the muffs on. So Plan on taking it out today. What temperatures should I be seeing? What is the hottest it should get?

Its a Mercruiser 4.3 generation 2.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,082
Re: boat engine temperture

Boat was running about 120 in temperature always. i read that 160 was normal. so we figured out my thermostat was bad so i changed it.

So now the boat gets to 160 in a about 10 minutes but got up to 170 about 15 minutes.

This was done with the muffs on. So Plan on taking it out today. What temperatures should I be seeing? What is the hottest it should get?

Its a Mercruiser 4.3 generation 2.

Ayuh,.... Anywhere 'tween those 2 numbers.....
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: boat engine temperture

They normally run around 170? under load when using a 160? thermostat.
 

agaldamez

Seaman
Joined
Mar 31, 2013
Messages
55
Re: boat engine temperture

Hitting around 160 and up to the high 170's. Engine seem to be running good.
 
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