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Ignition/Tuner/ECM/Fuel InjectionNeed advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.
Just noticed that the throttle body on my SE110 have some sharp edges from the casting inside.
Can this restrict the flow, any gain in removing these edges?
the newer evo and casting/machining has greatly improved but the older machine actually responded more to the exhaust than the intake due to the short runner and a rougher wall can help atomize the fuel.
also of note is that the intake pulse is not a continuous flow, more on the pulse side. another point is that a slick surface is more likely to coalesce the vapor into droplets, you want twigs not logs. do not get me wrong, depending upon the engine design determines if it is worth while.
the newer evo and casting/machining has greatly improved but the older machine actually responded more to the exhaust than the intake due to the short runner and a rougher wall can help atomize the fuel.
also of note is that the intake pulse is not a continuous flow, more on the pulse side. another point is that a slick surface is more likely to coalesce the vapor into droplets, you want twigs not logs. do not get me wrong, depending upon the engine design determines if it is worth while.
You are talking about polishing.. I agree, not a good idea. Hasn't been done for a long time.. The issue is that that port looks to have a step. Not good. The best thing to do without a flow bench is to make that lip go away and make it a smooth wide radius.. Leave the surface rough with a 80 grit sanding roll to create a boundary layer to keep the flow from tumbling. Sharp edges are not good.
Made a custom bent round tool file to reach the edges and smooth it out with 80 grit paper.
Didnt want to remove too much because it is rather thin material.
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Throttle body flow restriction?
