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July 10th, 2012, 11:07 AM
#1
[OP]
Cadet
Engine temp for a 1986 Mercruiser 140?
What is the WOT engine temp for a 1986 Mercruiser 140?
Can someone give me the link to the manual or the manual # to this motor?
Thanks
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July 10th, 2012, 04:45 PM
#2
Lieutenant
Re: Engine temp for a 1986 Mercruiser 140?

Originally Posted by
1987sylvanoffshore
What is the WOT engine temp for a 1986 Mercruiser 140?
Can someone give me the link to the manual or the manual # to this motor?
Thanks
Should be 150-160° max. Gets cooler with more water running through, though so it may be cooler than that if everything is flowing well.
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July 11th, 2012, 07:27 AM
#3
Chief Petty Officer
Re: Engine temp for a 1986 Mercruiser 140?
Should have a 140 thermostat in it.Mine run's at 120-130.Depending on water temps it will vary slightly.
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