Welcome to Carver Yachts Owners Forum

We are a boating forum for owners of Carver Yachts to enthusiastically discuss all aspects of Carver Boat ownership. Whether you are looking for your first Carver or currently own one, you are sure to feel at home on CarverYachtOwners.com

You are currently viewing our board as a guest which gives you limited access to view most discussions, articles and access our other FREE features. By joining our free community you will have access to searching the forum topics, post topics, communicate privately with other members (PM), respond to polls, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

1989 Mercruiser 3.7L Thermostat question?

GAS engine, transmission and generator repair and maintenance discussion forum.
User avatar

Topic author United States of America
tricountytrail
Scurvy Dog
Scurvy Dog
Posts: 9
Joined: June 2nd, 2014, 11:37 am
Vessel Info: 1989 Carver 2557 twin 180/3.7LX Alpha One drives
Has thanked: 1 time

1989 Mercruiser 3.7L Thermostat question?

Postby tricountytrail » September 10th, 2014, 2:32 am

1989 Mercruiser 3.7L Thermostat question?

My twin engine Carver runs about 120 130 degrees.
Boat ran great all summer, I believe the previous owner (I just bought at beginning of year) has removed the thermostats. Should I replace them with original 160 degree ones or leave as is?

User avatar

United States of America
Ramsport47
Commander
Commander
Posts: 376
Joined: February 10th, 2013, 7:13 am
Vessel Info: 1998 Carver 310 Santego
Has thanked: 72 times
Been thanked: 53 times

Re: 1989 Mercruiser 3.7L Thermostat question?

Postby Ramsport47 » September 10th, 2014, 6:29 am

I would install them with the original 160 degree stats. The engine is designed to run at 160 - 170 degrees and you won't be burning fuel efficiently if it's not getting up to the recommended temperature. Keep in mind, you will lose some coolant when you replace the stat as it is in the manifold
Kenny
1998 Carver 310 Santego
T-Merc 350 Mag MPI (300hp)
Port: Cedar Point Marina, Sandusky, Ohio
User avatar

Topic author United States of America
tricountytrail
Scurvy Dog
Scurvy Dog
Posts: 9
Joined: June 2nd, 2014, 11:37 am
Vessel Info: 1989 Carver 2557 twin 180/3.7LX Alpha One drives
Has thanked: 1 time

Re: 1989 Mercruiser 3.7L Thermostat question?

Postby tricountytrail » September 14th, 2014, 2:40 pm

I did replace both out drive impellers when I got it They were defiantly bad, maybe this is why he removed them. He was a "Diesel mechanic". I will return them to stock.

Return to “Gas Engines/Transmissions”



Who is online

Users browsing this forum: Midnightsun and 2 guests