Port matching and porting or trenching the cases for my big bore stroker 103cc Minarelli engine and discussing the process and information about it. Taking a quick look at racing engine cases and a Yamaha engine that exhibit the same ideas.
Here's a link to more pics of case work from members of the 49ccScoot.Com forums :
http://49ccscoot.proboards.com/thread/10404/case-carter-porting-trench-cutting
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Here are a few things that I use for porting (affiliate links) :
Single cut carbide burrs : https://amzn.to/31ut1NB
Double cut carbide burrs : https://amzn.to/3rubbp6
Foredom SR : https://amzn.to/3di4nCM
Cheap hand speed control : https://amzn.to/3dd3bk5
Foredom handpiece : https://amzn.to/3ruSaTl
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#twostroke #porting #2T