Need for rocker cover to be grounded??

[aaronng]

the point is ,why is the valve cover which is not electrically continuous to the block be grounded by honda from the factory.

does the daihatsu have the same setup,ie DOHC,same leads position,timing belt or chain,etc?

I'm not saying that the valve cover is not electrically continuous. I'm just saying that some manufacturers decide to ground it, even if they already have a ground running to the block, which is electrically connected to the head through the studs, which is in turn electrically connected to the rocker cover through the studs on top of the head.

And there are other manufacturers that don't. Daihatsu is a 1.3L, with 4-cyl DOHC with VVT, 4-valve per cylinder, dizzy, timing belt.