Recent content by jurchybald

Flat top

I ported one, have two more to do. I did cut the base and than use JB weld to reconstruct that extension back. Went couple of times in and out. Didn't find any real gains to be honest. it seems it does like higher exhaust. Second one I will try only BGD and squish cut to see if it's worth all...

Here you go

Transfer entrance is way down in the case. Cilinder entrance is just part of a tunnel. That extension on cylinder has to stay there imo

Look at my photo again and imagine how you would cut the base on a lathe. Than add asimetric chamber design and imagine cutting squish by hand like I do. It has nothing in common with old 400 believe me

It's a PITA saw to work on. You can see everything from this one pic

Yes here in eu stock exhaust port is at 103 and once I drop the cylinder it's at 106. If I leave it like that 400 becomes one bad mf**er

I don't like how every c-m saw has this L jet starvation. Especially ported. That's better on 500i. Plus insane throttle respond

261i than 400i and I'm good

I drilled the nozzle and it did improve my problem a little but not all the way. It did help with power. Saw is even stronger now. But that delayed rpm drop is so annoying I'm considering selling the saw. I have few regular carbed and love them. Any idea how to trick mtronic?

Uff that's small. I'll give it a try

Seems like its time to learn something new. I have been avoiding this for some time now. Can you point me to the drill bits I need. Thanks

It's new saw. Every 261c I ported had this. Many other models of mtronic do it but not so much. 261c and 462c are the worst in my opinion. On regular carb I just open L a little and that's it. But I like mtronic and want to know if there's solution for this.

Ported 261c is probably my favourite saw but one thing I really hate. when out of a cut it doesn't drop rpms right away. L jet lean symptom. Does anyone have a solution for this? I'm not comfortable drilling jets.