here is the second part after porting..the process of smoothen the surface was really2 slow..
i just polish by using sand paper in variaty of gritt..it took me 4 week to make this two hole dude..but the end part was really satisfied..take a look and compare my polish...heee
above is picture on larging the combustion area to get a lower static compression.then i can
boost up a little bit higher..but disadvantage of doing this is that, i can't estimate how much the compression ratio would it be..portting off an exhaust hole up to the valve seat making a smooth surface area
after porting and before polishing i used a diamond file to get
good profile surface,u can see at two faded hole from left
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