Ported And Heavily Modified Echo 590 Chainsaw Running Much Better Now!

[@michaelwhiteoldtimer7648]

That saw seems to be cutting so smooth, that square file is working great. Hopefully you get it dialed in before Sawfest

[@matthewknight5641]

Those boat plugs might be the ticket... But that's a pretty cool build for sure

[@neilssaws1414]

That's a strong runner for sure

[@coxsaws]

Pretty cool build!

[@brandonsmith3447]

A high revving TW??? Nice buddy.

[@nseric1233]

If you cant find a colder plug backing off the timing a couple degrees does pretty much the same thing. With higher compression and a better shaped combustion chamber you dont need as much advance in the ignition.

[@camrynrhodes798]

Nice 👍

[@Houseworksaws]

When I did my head saw I had a problem getting rpm so I opened the chamber a hair to make it bigger and lower compared to then I got more rpm. Whether that’s the right way I’m not sure but it worked for me.

[@danross395]

Changed all my saws to ngk bpmr6a 4972 on the advice of a friend and they all run cooler now, and maybe an extra 500rpm too. Hope this helps.

[@Smittyschainsaws]

@@danross395 Thanks for the suggestion. I ordered some to try out.

[@Mightycaptain]

Interesting. Is that a hotter plug than is typical stock?

[@jakegorman7121]

I've not had a big bore make any more power over an OE top end.

[@clarencetrice4442]

IVE 😊😊 seen saw like that be 4 U hold the throttle open and start them and that other saw U should start W a another cylinder where U want the saw 2 be at if not a enough more work will have 2 done the air flow and rpm what the nos stock 😊😊 OMG 8 18 2O24

[@gregmach8230]

Get another head and goback to the original plug for that head.

[@Smittyschainsaws]

@@gregmach8230 definitely an option. I want to explore a little more though. Might learn something new from this.

[@gregmach8230]

That's going to be one cool saw when you get it fully sorted.

[@G-Hawks]

four stroking like a mofo.. that engine is going to munt itself, hope you're recording when it does.

[@Smittyschainsaws]

@@G-Hawks We are still a few videos away from this so this is kinda a clue to where we are heading. 4 stroking like this could be caused by a rev limiter. Do these saws have rev limiter problems?