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Head cilynder Gray Marine 6-71

Old Marine Engine » Gray Marine Gas Engines - 4, 6, and 8 cylinder » Head cilynder Gray Marine 6-71 « Previous Next »

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Pablo Guillermo Quiros
New member
Username: afrodita_corrientes

Post Number: 1
Registered: 01-2012
Posted on Monday, January 16, 2012 - 02:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I need information of pounds of nuts adjusting engine cylinder head and torque scheme for
Gray Marine 64 HN9 6-71 1952 year. All other information is welcome thanks in advance!!! Pablo, Barco Afrodita,
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Charles Holmes
Member
Username: jimmys

Post Number: 13
Registered: 01-2011
Posted on Monday, January 16, 2012 - 03:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Pablo,..I know these 64HN9 Engines well and found the Head Stud/Nuts Torgue Spec's in an Orginal 64HN9 Service Manual,..160 lbs on Cold Head/Engine and 180 lbs, when the engine is Hot,..Cross tighten from the Center of the Head, crossing over to each side and to the end of the Head Nuts/Bolts. Great Engine when tunned up and with Fresh Injectors, plus Cylinder Kits and have found that their are "N" Series Rebuilt Injectpors available for your two valve head.
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Jim Anderson
Member
Username: jimanderson

Post Number: 13
Registered: 07-2011
Posted on Monday, January 16, 2012 - 04:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Pablo,
I have a couple operator hand books for the 6-71. If interested e-mail me at grandsrus@frontiernet.net. Jim

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