Logo
FULL SITE MENU

Therostat info needed

S

stigmen

New member
"Hello,
First post. I have a

"Hello,
First post. I have a 1971 or 1972 Mercruiser. It is a in-line 4, 120 hp and believe it is a 2.5L motor. I looked for a thermostat for it last year since it is missing. Temp gauge will go up if you work it hard. Went to NAPA and thought I got the right one. Did not fit. Either I am not looking in the right spot for the thermostat or I had the wrong one. Any help would be great.

Thanks"
 
And you need the right heat ra

And you need the right heat range as well. Do not put in anything hotter than 150 or you'll toast your engine.

Jeff
 
Thanks for the help. I went t

Thanks for the help. I went to Napa again and ordered the two that may work in the motor. The smaller of the two is the right one. It is a 140 degree therostat. Most likely the one previously stuck open or closed so they removed it. I could see replacing it every couple years to ensure proper operation.
 
Back
Top