Hipster
I'm Awesome
Block decking accomplishes multiple things, First it ensures a good head gasket seal, second it establishes compression height(how far in the hole) and quench distances and if you are able to get to a satisfactory quench number for detonation resistance. Most replacement pistons are further in the hole by .010 than an oem piston as stated. Most stock blocks with stock pistons measure between .023-.025 in the hole, add .010 for a new piston and you're at .035 + a .028 head gasket and building a non quench, lower compression, less efficient engine @.058 distance. I tend to stay away from shim gaskets, Not decking the decking the block is a step in the wrong direction. Most off the shelf gasket sets will come with .039 - .040 head gaskets which don't really work unless it's zero decked.
Almost every manufacture used to do it,and advertised CR ratios are not even close to measured values, A 10 to 1 piston .035 in the hole is probably closer to 9.5 to 1, maybe even a little less.
Almost every manufacture used to do it,and advertised CR ratios are not even close to measured values, A 10 to 1 piston .035 in the hole is probably closer to 9.5 to 1, maybe even a little less.
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