Originally Posted by Al.Fisherman
DuctTapedGoat Come on now...don't you think that Grade 8 is a little over kill, and hard to find, unless you are talking about a Metric 8.8? Yes it will work but in these cast aluminum engines the Grade 5 is stronger then the cast. So either Grade 5 or 8 will work. I like the grade 8.8 bolts for the sprocket (which mine included them). Plus its hard to find any all-thread above Metric 8.8 (USS Grade 5).
Grade 5 is the minimum I use if I can't get to a place with Grade 8. Though I do agree - it is a bit overkill! I don't use all thread - I just dehead the bolt. The reason isn't for torque, but for bent bolts and prevention of those.
Thank you though, usually I say Grade 5-8, and I especially should have in a topic like this.