I wouldn’t waste *har har* my time with polishing the gate ports, maybe gasket match the gasket flange with manifold but even that is debatable on what it’s really gonna improve.
I know Gillette diesel used to drill out the wastegate ports and put bigger pucks on them but dunno if that’s a thing anymore. There’s also a Borg Warner dual internally gated T4 .83 housing that I always thought would be interesting to run.
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2006 QCSB 2500 4x4 67/83/.90, +60% overs, TRE trans
1998 QCSB 2500 12 valve 4x4 Sold and missed
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