Part 6 Jonsered 2186, first test cuts 

Testing with a 28” bar full comp chisel chain. Most of the mods was to the lower transfers and then modding the piston.
The dining numbers are:
Ex-98
Trans-123
Intake-80
Squish-22
Lighten piston from 130grams to 102grams
Using a new OEM piston/cylinder
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