CamKing wrote: ↑Fri Jan 14, 2022 2:39 pm
You're not going to believe it, but that 1994 engine that Honda developed, used a cast iron block.
Yep, I worked on that engine.
It was a real drain to moral for the project.
One of my tasks there was fitting plated aluminum sleeves to those blocks, (nicest turning equipment I ever used, you could dial off a cut and the Voest Lathe would cut within 0.00005 reliably.)
They were desperate to solve a crankshaft bearing problem, they thought maybe if the block was more rigid, the problem would be mitigated (it wasn't).
It was a counterweight, materials, surface hardening and surface roughness problem.
They had aluminum blocks too.