1962 Evinrude head bolt torque

buitch

Cadet
Joined
Jun 8, 2013
Messages
13
I found specs for a 15 hp that had the torque to be 96-120 in. lbs. or 8- 10 ft. lbs. Would it be the same for an 18 hp?
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,195
Re: 1962 Evinrude head bolt torque

18hp is 120-125 inch pounds. (10-10 1/2 foot pounds) Use the inch pounds unless you have a mighty good foot pound wrench. It's very unlikely that it will be able to get it within 1/2 pound. Miss it by a couple of pounds and you are way off spec.
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: 1962 Evinrude head bolt torque

Or you'll have some stripped threads.
 

HighTrim

Supreme Mariner
Joined
Jun 21, 2007
Messages
10,486
Re: 1962 Evinrude head bolt torque

Start with half the recommended value for a round, then do the full torque value. The pattern is also very important.

TorqueSequence.jpg
 
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