CNC Mill Mark Removal in Intake Port

273 said

I get it's critical, but beyond something being severely off, my point/question is the average well tuned engine out there leaving a lot of easiably gain power just laying in wait? Like how well is the average performance engine handling fuel atomization.

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It’s sort of like gas porting pistons. Or the rings I suppose.

Just doing that one thing will make some power. If you gas port and then use thinner, low tension rings you pick up more power. But just using thinner, low tension rings might not seal well enough without gas ports.

You can also lower crankcase pressure with gas ports and that makes more power.

All of those things combined add up to a pretty nice increase in power.

It’s like that with a burr finish. Just running a burr around the port will help, but doing a burr finish can allow you to use less jet to make the same or more power.

Then you can drop coolant temps and make more power. Then you can change boosters and find more power by reducing jet area.

When you do it all it makes a good power difference.

It’s like everything else with engines. Everything affects everything and making a simple change that looks like it didn’t do much can end up allowing more changes that add up to big power gains.