The jug on my 4910 from factory had 62 thousandths squish. Which I thought was terrible. I did not know that some of them are as large as 85 thousandths. That is terrible. On another note this video is absolute gold! Thank you very much for sharing your knowledge and experience!
Exhaust gasses also shrink as they cool. You see guys with a 4 inch final section on their car exhaust and the have stopped the cooling gasses so the shrinking gas behind it runs in to it. I get the fact that you want to get the heat out of a 2 stroke thats worked but you are right about potential flow versus velocity.
This helped me a great deal! I am an amateur at working on chainsaws. So I see things and have an idea that I believe will be better but I dont know. This video backed up some of my own thoughts about my 4910. Thank you!
Charles up here in interior Alaska, we dont have the option of running high octane fuel, pretty much 87, that sits all winter long that comes from a barge, does your porting require higher octane gas, if so I can always get octane booster, really good video on explaining your logic as well as things you ran into.
Thanks Charlie Great work!! Years ago I read an article where a guy polished the intakes just as the exhaust and when he had the shape he want and polished smooth a took 220 grit and roughed it back up. I was wondering if the intake could be sand blasted or bead blasted to get a consistent texture after polishing them?? My mind is alway pondering such things!
well its nice to share info. this stuff is gonna die and will be lost...there is quite a few on youtube that don't want disclose their tricks like they are worried people will be stealing it and making money, i could name a few. which you might find the odd people will have a go, but in the grand scheme will you lose anything i really doubt it? if you do quality work people will always come back. nice work though👍
@@Broddi169 I’ll be at 1 51 and didn’t write my final numbers down and I don’t have it anymore. So now I am chasing trying to match that build. Moral of the story is write down everything.
Have you ever tried advancing the timing on one? I’ve been working on mine got the lowers done and squish set. Mine had .080 squish 😅. Gasket was .010 and took .050 off the base. Haven’t put a wheel on it yet to see where everything landed.
Nice work Charles and your explanations of what you are doing and why are very helpful. Do you run the stock coil and are you changing/plugging the decomp? Looking forward to seeing the muffler mod. Really appreciate your videos!
Very cool man. Are you leaving the transfer roofs as is from factory? Or raising them to match what you take off the base? Kinda sounds like you mostly just leave the transfer roofs alone.
@@mackenziesibley7025 I use to use a rci 2950 with a Palomar 90a or a firebird 500 with a cobra2000 on a sigma 5/8wave 413 was my numbers not Ben on the air in a wile to shoot skip
![2 Stroke Tips & Tricks [Blowdown]](http://i.ytimg.com/vi/0-DJP04BLRg/mqdefault.jpg)
![2 Stroke Tips & Tricks [Blowdown]](/img/tr.png)
![Kumamoto Masters Japan 2024 | Gregoria Mariska Tunjung (INA) [5] vs. Akane Yamaguchi (JPN) [2] | F](http://i.ytimg.com/vi/EIjZybhsWqA/mqdefault.jpg)
And this recipe makes for one of the baddest 50cc saws built
Take note of what this guy does
The jug on my 4910 from factory had 62 thousandths squish. Which I thought was terrible. I did not know that some of them are as large as 85 thousandths. That is terrible. On another note this video is absolute gold! Thank you very much for sharing your knowledge and experience!
Excellent description of how you modify your echo 50cc saws. And it all sounds logical.
I appreciate you taking the time to explain what and why! 👍👍👍👍🇺🇸🇺🇸🇺🇸🇺🇸🙏🙏🙏🙏
Thanks it's no problem if u ever Wana chat look me up in Facebook messenger I try an help out as much as I can
Thanks for sharing all that info 😎👍. Have a great weekend
Thanks Mr Brisco. Very helpful. 👍
Thanks Charles. I have a 501 and plan on doing my first ever porting on it. Just getting set up with a timing wheel etc. Thanks again.
Exhaust gasses also shrink as they cool. You see guys with a 4 inch final section on their car exhaust and the have stopped the cooling gasses so the shrinking gas behind it runs in to it. I get the fact that you want to get the heat out of a 2 stroke thats worked but you are right about potential flow versus velocity.
Very nice! Should make another great runner.
This helped me a great deal! I am an amateur at working on chainsaws. So I see things and have an idea that I believe will be better but I dont know. This video backed up some of my own thoughts about my 4910. Thank you!
Charlie I ported my 357 xp lower transfers only and they were huge and that saw ran like a race horse .
Great work love it!!!!
Great job Charles! Merry Christmas!,🎄🇺🇸🎄🇺🇸
Thanks
Charles up here in interior Alaska, we dont have the option of running high octane fuel, pretty much 87, that sits all winter long that comes from a barge, does your porting require higher octane gas, if so I can always get octane booster, really good video on explaining your logic as well as things you ran into.
Thanks Charlie
Great work!! Years ago I read an article where a guy polished the intakes just as the exhaust and when he had the shape he want and polished smooth a took 220 grit and roughed it back up. I was wondering if the intake could be sand blasted or bead blasted to get a consistent texture after polishing them??
My mind is alway pondering such things!
Thanks for sharing! Appreciate it a lot!
How much do you typically charge for a 4910?
well its nice to share info. this stuff is gonna die and will be lost...there is quite a few on youtube that don't want disclose their tricks like they are worried people will be stealing it and making money, i could name a few. which you might find the odd people will have a go, but in the grand scheme will you lose anything i really doubt it? if you do quality work people will always come back. nice work though👍
That’s exactly right, very uncommon for 2 saws to have the same squish from the factory. No two builds are ever the same. I’m into the 51 Husky’s now.
I loved the 51 n 55. I have a cherry 55 I restored.
@@Broddi169 I’ll be at 1 51 and didn’t write my final numbers down and I don’t have it anymore. So now I am chasing trying to match that build. Moral of the story is write down everything.
I keep walking by the 4910 at my local feed store eye balling it. Think I’m gona pick it up next pay!
Have you ever tried advancing the timing on one? I’ve been working on mine got the lowers done and squish set. Mine had .080 squish 😅. Gasket was .010 and took .050 off the base. Haven’t put a wheel on it yet to see where everything landed.
Nice work Charles and your explanations of what you are doing and why are very helpful. Do you run the stock coil and are you changing/plugging the decomp? Looking forward to seeing the muffler mod. Really appreciate your videos!
Echo has a good ing timing curve so I leave it be the decmop can be plugged if desired
Makes me want to pick one up and send it to you for a mod
This helps a ton thanks
I think you are the Echo whisperer
Dang good looking work !
Thanks
Thank you.
Very cool man. Are you leaving the transfer roofs as is from factory? Or raising them to match what you take off the base? Kinda sounds like you mostly just leave the transfer roofs alone.
I move big one up to little one I like the little one were it ends up at after cuting base an move in ex up
Wuz🆙BigGuy
This is very helpful. I would like to see the muffler mod
My #s were stock numbers I did t touch anything other than the wrist pin out of a ms362
First
Lol
What do you use to port the transfers? I saw the video of the different tools you use and I did not see a 90° so I was wondering how you do it
Stones burs an I have a 90
Where can i buy a completed 4910
I think dyno Joe has 3 built an ready for sale I font have any for sale at the moment
Second!
What kind of transfer duration do you end up with
I just go by when they open I'm not concerned with transfer duration in take duration I worry about but not transfer
How do I get in touch charley
Messenger on fb
@@CharlesBrisco dont have a account at the moment but will prob make one like to pick your brain and possibly more thanks bud
Contact information please?
Do you tinker on CBS's to mr brisco
Cb raido is another hobby I've not Ben on air in a long time tho Ben to buisy
@@CharlesBrisco there alot of fun currently running a magnum s6-150 and a sweet 16 for a mobile unit alot of fun
@@mackenziesibley7025 I use to use a rci 2950 with a Palomar 90a or a firebird 500 with a cobra2000 on a sigma 5/8wave 413 was my numbers not Ben on the air in a wile to shoot skip
@@CharlesBrisco rangers are nice my old man is running a 69ffc4 right now in the big rig nice radios.
Is this a hobby or are you doing this for people as a servide
Hobby I don't take on much
@@CharlesBrisco damn, hard to find good work lol if you’re ever interested in taking on work let me know!
@@CharlesBrisco crazy after we talk I see some videos on chainsaws with your work 🤣 algorithm
How much do you charge for a port job for a 4910 ?