Volvo AQ131A Exhaust Manifold Torque Specs

royaleccles

Recruit
Joined
Sep 10, 2009
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2
Anyone have the torque specs for a Volvo Penta AQ131A exhaust manifold? I can't seem to find them here on the forum nor online. I have replaced the manifold but before running thought I would find out the correct specs. I have torqued to 25lbs now. Thanks
 

royaleccles

Recruit
Joined
Sep 10, 2009
Messages
2
Re: Volvo AQ131A Exhaust Manifold Torque Specs

Thank You for the link. I can't find a specific notation to the exhaust manifold, just the head. There is one generic reference to any bolt torque

Dimension Tightening Torques
Nm lbt.ft
M5 6 4,4
M6 10 7,4
M8 25 18,4
M10 50 36,9
M12 80 59,0
M14 140 103,3

What should I torque it to in your opinion.
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Volvo AQ131A Exhaust Manifold Torque Specs

Measure the bolt diameter (outside of threads) and determine the diameter, then use the chart you kind of posted. for the torque, read the paragraph above those torque values.
 
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