Hi, I'm doing several zvh but I have question about pistons and piston rings.

There are two models of 2.0 zetec silver top, Zetec top and DOHC top,
the two with NGA engine code.

Each one has different pistons, piston references 978M and 928M, then also different piston rings.

But I want to buy piston rings and I can not find which one is for each one.

Do you know anything about this??

Very thanks, regards.

 

It’s a long time since I built a silvertop but there where two differant thicknesses of top ring.