sandwich plates???????
Turbo Mini Forums

Was having a talk with a man from "turbo technics" About lowering the compretion on an mini engine! He advised a "Sandwich plate" Which as he decribed is a thin plate that goes inbtween the head and block. Has any one done this as it sound like a pile of bull to me? It would also mean using two head gaskets! More to go wrong if You ask me! When i asked where to get one he said that any good machine shop would be able to make one using a head gasket as a template????????

You'd be best getting one laser cut from Steel. If anyone is interested, i already have the 'Head Gasket' shape geometry ready for such a task...

As regards their use... You don't need it on an A-Series. You only need them on engines where there is no scope to open the chambers out, or the piston design allows little or no machining...

Could it be an efficient way of dropping the compression dave, or is there more benefit to re-shaping/opening out the chambers in the head for best performance?