how much we can give the minimum piston to head clearance for D Serries engine that using Custom Rods and rev arround 9000 rpm ???

 

Run a thicker head gasket..You can get custom rods but im not sure that it would be worth it ..Why do you want to mill your head ????

leeo

 

clay check the moter and you will really know whats going on.

 

Im sorry if my grammar was worst (and i dont understand with "clay check" mean )

yes to upping the compression ratio. (by using the more thin head gasket)
i've use JE pistons that have huge and deep reliefs ,so im not affraid the valve will hit the pistons.
The point im affraid is ,at high rev (arround 9000 rpm plus) , the conecting rods will "outstretched" (even it was Custom Rods) and thrown the pistons hitting the head.
How thin (the head gasket) the space between the pistons and head we could give to the engine??

Im sorry if my english was bad ,and always make some miss communication before

Thanks