So I've done the port, matching and machining work to my Minimoto..
The pics below are a 40cc Blata 5 port..
Untouched and stock..
Half finished comparison..
Side shot to finished side..
Different side shot, showing finished and unfinished..
Close up of the passage I cut between the transfer and boost port..
Finished..
So..
All work was performed with a dremmel and in turn is fairly rough but extremly effective as has been proven on track..
You will note that the skirts around the transfer ports are gone and are now sitting around 1mm below the deck height (can actually effectively go 3mm but this motor is for my 10yr old daughter)..
Also I have cut a small passage between the transfer ports and the boost port..
Both these mods allow the fuel/air to enter either ports easier..
I also raised the boost port by 1.5mm..
Further more matched the cases to the barrel..
Now what I would like to know is wether anyone has effectively done this work or similar to their NSR motors as I would be looking at doing this to my NSR motor..
All thoughts, comments and suggestions welcome..
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Paranoia about failure will ensure nothing but failure to ever reach potential.
MC18 Race bike project..
MC21 Race bike..
