Not today, I'm sick or atleast recovering. Have not ate anything substancial in 2 days. My stomach sounds like there are gerbal races going on.
There is no doubt that adding lumps is the key to adding power to a siamesed port. Anything that can improve performance in N/A will also add power in turbo/ supercharged mode.
Keep in mind when adding lumps. Upsizing the valve is crucial. Stock size valves will not add any power. Minimum size should be a 1.84 valve on the intake.
By cutting out the bolt boss and leaving it that way. Velocity will go down in the port. The motor will become lazy and inefficient at low rpm.
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