Y8 and Z6
#2
RE: Y8 and Z6
Better? They both have their strong points. It's generally accepted that the z6 head is better for turbo. The y8 head has a smaller combustion chamber due to it's quench area. Becasue of this, the y8 is less prone to detonation and is also about half a point higher in compression. Furthermore, the z6 has straight ports called "tumble" ports which are a little better for top end, and the y8 has offset ports called "swirl" ports which tend have have a better bottom.
Does that help?
Does that help?
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