popopboat
Super OPE Member
- Local time
- 6:16 AM
- User ID
- 10479
- Joined
- Sep 17, 2019
- Messages
- 403
- Reaction score
- 637
- Location
- Croatia
Hello, so im new to porting and "tuning" chainsaws and today i tried to modify a bit carburetor, mainly butterfly valves (choke and throttle).
I sanded both valves to more than half thickness, polished them and also sanded/ground shafts to a bit more aerodynamic shape - elliptic, to decrease turbulences.
Also smoothed out tiny bit a carburetor intake side.
After reassembly I started chainsaw and it four stroked like crazy, ran very very rich (but in progress i never touched adjustment screw) and i finished my work toolate so i couldnt test it on a nice piece of wood , does that mean that i somehow messed up and now it sucks less air ?
Paint sketch of what i exactly did : https://ibb.co/wh2MPDd
What do you guys think?
And what do you gennerally think about doing this? Worth doing it or shouldnt be done at all?
I sanded both valves to more than half thickness, polished them and also sanded/ground shafts to a bit more aerodynamic shape - elliptic, to decrease turbulences.
Also smoothed out tiny bit a carburetor intake side.
After reassembly I started chainsaw and it four stroked like crazy, ran very very rich (but in progress i never touched adjustment screw) and i finished my work toolate so i couldnt test it on a nice piece of wood , does that mean that i somehow messed up and now it sucks less air ?
Paint sketch of what i exactly did : https://ibb.co/wh2MPDd
What do you guys think?
And what do you gennerally think about doing this? Worth doing it or shouldnt be done at all?
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