porting tips on cs620pw

I don't have the footage on this vid I think it's in one of my other vid but I epoxy
up the intake floor to bring intake timing back to around 80 instead of 85 so numbers are100 124/126 in 80 with close to 26 cut off base if I recall vids of it running after epoxy are up on my channel too

[@shaner67]

Hats off to you Charles, another fantastic build. I'm amazed at the consistency of which you build these Echo power heads. Flawless in so many ways, true craftsmanship and high attention to detail. The talent is all from hard work in honing this craft of building strong chainsaws. You are the Echo guru.. SLANT'E 🙏

[@jamesmihalcik1310]

Really nice, excellent photos and discussion. Very well documented. Thanks!

[@JKSawShop]

The Echo guru. You know your Echoes.

[@Bkellyusa]

Charles, those transfers are real pretty.

[@andrewslagle1974]

Nice job the port work looks amazing thanx for sharing.The video is great nice job!

[@slaxxx]

Awesome info! Thanks Charles!

[@tomyousch7070]

Your cylinder work looks great! I bought a new 620PW running a 27”, 32”, and sometimes down to a 20” bar if Imonly limbing. It’s a great dependable saw, but a bit heavy. Chose this saw due to having quite an assortment of Echo saws I bought when a local tree company closed its doors due to owners death and I bought everything they had. Most are older saws but they run very well due to great maintenance and basically the tuffness of these Echo saws and also newer Stihl, and Husqvarna falling saws that made up the fleet. I’m wondering if you do porting and a wide power band every day working- woods type of saw upgrades Most for customers or do you just due your own saws? I’d like to upgrade this 620, a 601 and CS 8000. Thanks for the accurate information and excellent work quality you do on these saws. Also the bench dyno backup really proves your theory on timing and design of cylinder work. Please keep the videos and information coming! Semper fi!

[@1ybuzz]

Im real new to porting and Im trying to wrap my head around the reason for cutting the top of the intake the way you did.

[@CharlesBrisco]

To make it more efficient air pump put of it

[@ScrewdriverTUNING]

Great freakin build ❤️‍🔥🦾☀️🌙

[@Andyshine77]

Great tips man!

[@markmetzger5430]

Awesome build Charles, I would love to see you make a pipe for this one :)) Gosh would it be great to find the right length piston .🤔

[@justinweaver8787]

Appricate u for helpn people on porting some guys wont tell u nothin or deliberately tell u wrong. U build a helluva saw sir thank u 4 helpn those who want help. Have a good week sir.

[@IowaPerformanceSaws]

Very nice work!!

[@richfreireich4528]

You really put the oomph into these Echos Charles, the 4910 and 501sx are just flat out from another planet, man I would love to see you fabricate a full wrap on the 4910 or 501sx I can only imagine what the handling would be like on such a pint sized powerhouse!!

[@CharlesBrisco]

I have done two full wraps on them one501 one4910

[@richfreireich4528]

That is definetly gonna be on my list, gonna be a busy summer, with some new log homes up here in Alaska, I will be contacting you very soon on a 501 full wrap build I'm just floored and still trying to wrap my mind around how much power you get out of the little demons!

[@zeromark202]

Gorgeous Work!

[@IndianaDoug]

Awesomeness

[@lonnieholbert8898]

Very nice. Id like to see a head to head of the 590 and 620, stock and ported. I have a 590 that Im crazy about, cost was the choice over the 620.

[@simpleman4224]

Great job buddy! 👍👍👍👍🇺🇸🇺🇸🇺🇸🇺🇸🙏🙏🙏🙏

[@daninuesca3801]

Wow Charles,Super nice work buddy!😳🙄🤔🤗🍒👌👊👍🤙🏻🤙🏾

[@themanchannel8761]

That's an awesome saw! I'm planning on porting my CS-590. Any suggestions as to numbers? At this point I have 138* exhaust duration and 156* intake duration, with 16* of blowdown. I've completely gutted the muffler, but it still dumps out in the stock top location. The gutting REALLY helped it breathe, by the way.

[@GlynnRussell-ew3pp]

Love you work . Iam building a 381 squish 28000 and exhaust at 103 intake at 111 and blow down 26 . Seems my intake may be little high. What would you recommend?

[@gumboot65]

How much di you charge to do that to a 620 pw ? Good vid ! Tho you didnt show time's, I could see it definitely pulled stronger by a good bit ! Good job

[@jackpinesavageadventures3142]

👍

[@Broddi169]

Is that a wowtac flashlight laying there ?

[@CharlesBrisco]

I'm sure it is thank you for both flash lights I've not had to buy battery's for a while now

[@Broddi169]

@@CharlesBrisco not a problem bro. Figured you'd get much use from them .

[@justinterrell9555]

It sounds crazy but I had a 590 last year that was free porting probably .030 maybe a little more and it ran decently strong. I thought it was going to run like shit. Regardless its not good as you know. Lol

[@CharlesBrisco]

I try to avoid free porting

[@novicelumberjack]

Too bad that skirt wasn't a little bit longer. Seems to run well though. How do you feel about it?

[@CharlesBrisco]

If skirt was longer I cud try combustion chamber an piston mods an prolly realy get some gains out of it

[@jarrodskeete52]

Charles, really liking these echo builds. I'm thinking of getting a CS-620p and a CS-8002 to add to my arsenal.... Poth I would like to port.... Do you have to change the H jet on the 620 carb? Heard they run too rich and don't lean enough on the stock carb because it has a bypass jet? Any guidance would be great thanks!

[@CharlesBrisco]

I tend not to have to mess with the nozzle

[@jarrodskeete52]

Thanks for the reply.... Do u tend to go fairly square with your timing on the I take and exhaust.... U seem to like 100 on the exhaust and around 80 intake... So about 160 duration on each? I was messing with a shindaiwa 488 this as a 48cc ut they are dual port.... Smalling ports too.... I left them alone but opened the lowers considerably... Anyway lwent a little over on the exhaust at 96 and have about 20thou squish..... 25 degree blow down and 73 on the intake.....have to see how she runs.... I'm hoping the high roof doesn't Rob too much power..... Do you think those numbers are terrible? Maybe increase the intake duration to at least 155? Your 4910's are wicked by the way... Pitty my echo dealer is only Latin America Market.... I can only get the 4510......will you Port one of those in the future?

[@CharlesBrisco]

@@jarrodskeete52 96 is were my 660 build an my 4910reedsaw is they both were fine there if it don't have enuff tq an if there's room u might be able to cut some out of the chamber then drop the base witch wud lower ur export an intake port at same time an boost your compression an you get more of your tq back but make shure you don't free port first

[@jarrodskeete52]

Yup that would be a good plan... Unfortunately I'm at the verge of freeporting! Bottom of skirt is right there! Oh well, I will see how it runs.... Will have to pull some rpm to get power out of it.... When it was at 100 Exh timing I was getting 205 psi So hopefully my Comression is not too bad by loosing the 4 degrees!

[@bernardosuarezcretton622]

Hi Charles. Nice layer of lubrication inside this chainsaw. What type of oil and oil-gasoline are you using? thanks in advance

[@CharlesBrisco]

87 50to1 redarmor

[@bernardosuarezcretton622]

@@CharlesBrisco thanks

[@mattfleming86]

Hey Charlie B. I was re-watching this video, again, and was wondering if in the 9 months since you posted this if you had dropped any 620's any further into the freeporting territory? I was reading about some folks who ended up freeporting other saws and while it didn't help, it didn't seem to hurt either. Was just curious. And then Boedy made a video on it a few days ago and seemed to get a similar experience. I found it interesting because it seemed to go against "common knowledge" and then I found other people saying the same thing.

[@Szczyrczek]

Hi, what is freeporting?

[@anthonyseidita919]

Im 6 months in to the tree business and love it.I’m torn between the 620pw or 501. I wanted something in the pro level for when I get better to do some side work. What saw would you suggest?

[@CharlesBrisco]

Both are great

[@lucagoller8947]

Super echo dall'Italia da Castel beseno Trento

[@rohianasitanggang5840]

Cariblok