I have heard to port and polish exhaust and not intake on turbo heads, any input?? I have a head done on both sides and ready to have 1mm o/s valves installed.
BUT we have port injection. Polish it up to the injectors and smooth it afterwards. My personal opinion is that you should only POLISH the exhaust ports and mildly smooth them. dont port match exhaust ports with the exhaust manifold.Bishop92T said:Supposedly you want the rough surface on the intake side to keep some turbulation which is supposed to help keep fuel atomized.
Why would you say NOT to port match the exhaust side? You want as much exhaust velocity as possible to spool that turbo up quickly?? [/B]