Porting and other mods...
#12
#13
Yes fasternu is correct on a 4 stroke V8 or single if the intake track is too smooth it can flow worse than a rough one. The moisture (fuel) creates a lot of surface tension on the walls. If the finish is a little rougher it creates turbulence along the wall and does not allow the moisture to get a hold on the wall. The exhaust is the opposite you don`t want any turbulence just smooth sailing.
98 Scrambler 500
00 Trailblazer 250
98 Scrambler 500
00 Trailblazer 250
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