Oleh Posted June 27, 2006 Share Posted June 27, 2006 i dont know if this is the right forum to ask but, i will be making a 4-2-1 header for a KA24DE. and im wondering if i should make the ID 2" or 2.25". will it really make a difference in low end torque ? Quote Link to comment Share on other sites More sharing options...
johnc Posted June 27, 2006 Share Posted June 27, 2006 You are making the primaries 2" or 2.25"? What mods have you done to the engine? Quote Link to comment Share on other sites More sharing options...
Oleh Posted June 27, 2006 Author Share Posted June 27, 2006 ^ yeah the primaries...is that too big ? should i go 1.75". sorry i didnt specify. stock bottom end. engine will be N/A. most work in the head and basic bolt ons. Quote Link to comment Share on other sites More sharing options...
veritech-z Posted June 28, 2006 Share Posted June 28, 2006 I'd say make them slightly larger than the exhaust ports. have you measured those yet? 2"-2.5" seems awfully big... Quote Link to comment Share on other sites More sharing options...
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