The engine block is the foundation of turbo tuning for the S660. This hyper-tuned engine block is made by strengthening the cylinder block, which is the weak point of the OEM engine body, with an open deck cylinder anti-vibration plate. This is an essential part for turbo tuning using a brand new JW5 engine block.
Please perform boring and honing depending on the piston size.
For high precision and high power tuning, use reinforced pistons and reinforced connecting rods.
It is introduced on Ameblo's "M&M HONDA's Honda Honki."
https://ameblo.jp/mandm-honda/entry-12408181922.html