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Recent content by subiAL

  1. S

    Echo cs 590,600,620 porting/mod/build thread

    My saw is cutting like a monster. I need to either do the 620 carb or plug the hole in the high jet and do the 620 coil but I am very happy so far. I'll] look into some of the things you mentioned next time I open the saw up.
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    Echo cs 590,600,620 porting/mod/build thread

    My original numbers before doing the gasket delete matched and I re zeroed before checking those. I did think it was odd though
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    Echo cs 590,600,620 porting/mod/build thread

    Ported my first saw today. Echo 590. Smoothed the airflow to the secondary lower transfer (dident do the primary because i was nervous about too much case volume causing spitback). Base gasket delete. raised and widened the exhaust. Final numbers Intake close 76 Intake open 80 EX 105 TRANSFERS...
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