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UK & Ireland S2000 CommunityDiscussions related to the S2000, its ownership and enthusiasm for it in the UK and Ireland. Including FAQs, and technical questions.
I assume you mean the nuts which attach the manifild to the head, in which case the service manual lists the torque setting as 23 lbft = 3.2 kgm = 31 Nm
I nipped mine a bit more than that, as it felt way too slack. Careful of overtightening though, as you can shear studs, or looses nut over lots of heat cycles.