cylinder head bolt torque
I'm ready to bolt the head back on to my 86 Accord, but when consulting the
shop manual (original shop manual from Honda) I find information that may be contradictory. On pages 6-2 and 6-16, the head bolts are referred to as 10 mm with 1.25 mm thread pitch, however I the bolts I removed are 11 mm with 1.5 mm thread pitch. Given that the bolt size and thread are wrong in the manual, should I believe that the torque specified is correct (22 then 49 ft-lb)? I would think that the proper torque would be different for various bolt sizes and particularly for a different thread pitch. JP |
Re: cylinder head bolt torque
JP wrote:
> I'm ready to bolt the head back on to my 86 Accord, but when consulting the > shop manual (original shop manual from Honda) I find information that may be > contradictory. On pages 6-2 and 6-16, the head bolts are referred to as 10 > mm with 1.25 mm thread pitch, however I the bolts I removed are 11 mm with > 1.5 mm thread pitch. my money says those bolts are exactly what it says in the manual and that you're using the wrong part of the caliper jaws to measure. > > Given that the bolt size and thread are wrong in the manual, should I > believe that the torque specified is correct (22 then 49 ft-lb)? I would > think that the proper torque would be different for various bolt sizes and > particularly for a different thread pitch. use book torque. use a bending beam torque wrench, not the clicky kind. |
Re: cylinder head bolt torque
JP wrote:
> I'm ready to bolt the head back on to my 86 Accord, but when consulting the > shop manual (original shop manual from Honda) I find information that may be > contradictory. On pages 6-2 and 6-16, the head bolts are referred to as 10 > mm with 1.25 mm thread pitch, however I the bolts I removed are 11 mm with > 1.5 mm thread pitch. my money says those bolts are exactly what it says in the manual and that you're using the wrong part of the caliper jaws to measure. > > Given that the bolt size and thread are wrong in the manual, should I > believe that the torque specified is correct (22 then 49 ft-lb)? I would > think that the proper torque would be different for various bolt sizes and > particularly for a different thread pitch. use book torque. use a bending beam torque wrench, not the clicky kind. |
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