LIMB REAPER!!! John ports and polishes my old ms200t explaining every step of the way.

Wow I have a new found level of respect for saw builders! this was intense to watch! So much patience and skill involved its crazy.
Check out john's KZbin and IG page
Support this channel at Patreon.com/treeson.
Merch available at guiltyoftreeson.com
I found this cool website that tells you the years of the various Stihl models
fireandsaw.com/stihl-chainsaw...
‪@johnscustomsaws‬ on KZbin and IG

[@johnscustomsaws]

Geez that guy can talk 😂

[@GuiltyofTreeson]

😂

[@johnscustomsaws]

@@GuiltyofTreeson just watched it and im in tears over the secret prize hahahaha

[@mmmbbbccczzz]

Stellar Performance You make it look easy though, kid's don't try this at home 😆

[@rickhultman1660]

Boy can HE!!!!!

[@tymoughan4514]

You should write a book on porting a chainsaw. I don’t think one exists

[@marcellemay7721]

Some people have commented on how he can talk. I'm absolutely grateful for this guy. He's talkin to the camera guy like he would be teaching his kid. He explained absolutely everything one needs to know about setting it up, porting, desired numbers. I've watched 50 videos from other porting channels and everybody seems to guard their secrets like it's a pile of gold. I personally have a machine shop and I've built and timed quite a few 4 stroke car engines. So none of this flies over my head, but there are a lot of nuances that only someone that does these all the time will know, and he's sharing it. I'm not wanting to build race saws, I just want to build some good reliable work saws that perform well and I don't have to worry about them blowing up. Excellent video. If I could give it 10 thumbs up, I would!

[@bryanhumphries4988]

best hour and sixteen minutes of KZbin I've watched this year....cheers

[@GuiltyofTreeson]

Thanks man

[@wheeliebad11B]

One of the 6 people who really appreciate seeing the wheel of mystery in action. You hit all the high points of what's important. I really wasn't expecting to see so much solid info in 1 video.

[@revo7721]

This was not at all boring bro! Great workmanship and a wealth of knowledge.

[@danieljenkins6630]

I always love watching a true professional at work! (Just like you Jacob!) That we got to do it with John’s explanations was a great bonus and very generous of him. Only 3hrs! Give us 3 more!!! Thanks guys.

[@jeremyray8705]

I LOVED THIS VIDEO! There's nothing better than watching a craftsman at work. Thank Jake and John for letting us watch the process. I'm definitely one of the 6. 😁

[@leeashworth9874]

Me 2

[@davidarford4420]

Best porting video ive ever watched and ive watched them all. I port saws daily from work saws to race saws and i very much enjoyed this vid. Thank you and your friend for taking the time to make this . 👍👍

[@hickshickory3482]

As a climber we all know the ms 200t is a legend and still the best climbing saw ever created but this one here that you guys just built is so awesome! Ty for sharing that! Shout out also to August that bar is awesome!I have a new respect for Guys like John and Bellhopper that build cause that’s a talent in itself! This is the best all around tree service channel on the web! You guys rock I loved this video ty for that!🍀🪓🇮🇪as always keep a handle on it!

[@markbrown-us4xe]

I've done 4 Stoke motor cycle head's for years and we all have our favorite bit's.When they clog or go dull it's part of the oh no moment. Love w.d.40 for clearing chips and final finish. Always wanted to look over someone's shoulder on a 2 stroke. He was very clear on the dos and don't and why. Also love the foot pedal to adjust rpm and quick change handle. You both rock this video and thanks!!

[@daisonkirkbride7205]

I am one of the 6 he was talking about. Haha At the machine shop I worked at we had a flow bench for porting heads. The reason you want dimples on the intake is the air is being pulled in and by having the dimpled surface it actually does the opposite of what you would think. It allows the air to glide across the surface as it is pulled through the port. It smooths out the disturbances from symmetrical differences in the port by having the negative space below the high points. You can kinda think of it like a shock in a car. But also having less surface area the air actually touches as it is pulled through the port. So less drag it has while it is moving giving more flow/air to the cylinder. In higher end performance cars they do the same to the under belly of the car to reduce drag. The reason the exhaust port is polished is because the air needs to be forced out as quickly as possible it does not have time to let velocity help aid the removal. Having dimples on the back side would actually temporarily slow the exhaust gas coming out not allowing all of the waste to be expelled quick enough before port or valve closes. We are talking na machines here. I have never tested a rough surface on exhaust port while running a turbo charger. They have back some back pressure that comes along with them. May aid velocity to give its benefits of quicker than a polished port. Key word may... Have never heard of anyone running simulations on a flow bench to test the possibility for added benefits. Butt would not apply here. Thanks again. I will need to watch this another 4 times this week to absorb all the things. ;)

[@messybench]

Jacob broke us in with an 8 hour saw idle 😢 This is light speed. 😅

[@GuiltyofTreeson]

😂

[@latinodeathjazz]

I’ve recently started porting saws for fun and videos like this really really help with all the little things. Nice one guys 👍🏻

[@TheStrikkegenser]

Best video on porting on the whole inter-webs! Love the very exact mixture between raw experience and hard cooked numbers.

[@mikewynn8901]

can deck the cylinder with valve grinding paste and a sheet of glass (std. float glass is super flat).... Great video and really informative. love the sound effects with your dog is snoring in the background

[@mld2990]

I have watched a lot of porting videos, but this was the best, I have been wanting to port my 201tc and this was what I needed.

[@Sae-fu5ch]

these three vids are easily your best ever uploads for me personally love it and massive respect to John for allowing it 👌

[@grantkerr2971]

Great tip thanks. Having owned LC4 KTM 4strokes in the past, loctite quickly becomes your friend! Got a new 395 myself recently, off to the shed to do this right now.

[@darthgbc363]

13:34 That measuring instrument is a digital caliper, not a micrometer. Great job. A huge amount of info & knowledge being shared here. Thank you.

[@johnscustomsaws]

No kidding... didn't know that... learn something every day 🤷‍♂️

[@kenh9508]

I cringed a little with the water balloon analogy as fluids cannot be compressed. Not claiming I know anything about porting an engine or fluid dynamics for that matter.

[@dr7477]

@@kenh9508 Air is a fluid and can be compressed. Liquids are incompressible. I didn't cringe at your comment because I know people make mistakes.

[@kenh9508]

@@dr7477 yeah ok, unsubsidized

[@mrtreejunkie]

It’s possible to put the same volume of water in a smaller space being heated & pressured! Heat will change the H20 molecule and being that a balloon 🎈 stretches being that it’s rubber! It’s possible Something that does not stretch could possibly hold that same amount with pressure behind it in a smaller space. Thus creating more compression which if released dramatically produces more energy thus creating more power! Energy=Power! We all learn something new everyday. Not the perfect analogy but we all understood what he was implying but some of us think outside the box. Lol cheers oh that space that’s smaller is very very minimal. Just like a cylinder when creating a smaller space with the same amount of internal mass present while outer mass is shrunk around it! Creates more pressure just like a stroker motor! 382 as a example! Again cheers 🥂 everyone!

[@Richard-tz2qf]

Brilliant! John is an absolute legend 👏🏼 awesome work

[@bennyblanko3]

Thank you so much for sharing this, and filming and editing! I learned more from this video than anything I've seen on youtube. And, such a nice job too! I hope John shares more, especially on the newer strato saws.

[@dalemeyer8207]

Super Cool ....intake roughness...square out ports... Polish technics on exhaust... Fine grindings are abrasive and dont wipe off well in my anion.....I take distilled water with dawn dish soap and boil head an vigorously srcub with stiff plastic brushs to get all the fine grindings out and boil in clean distilled water...blow dry and spray head down with wd-40....Im a amateur..5 years silver Stihl Tech. Thanks Again , Great Video 😎

[@VegasEdo]

Gonna put dozens of hours into porting a saw so that I can speed up my firewood efforts by 3 minutes LOL. Great video, really goes to show how a lifetime of learning can make something so complicated look so easy.

[@tommytwotone81]

I've been working on cars and trucks most of my 40 years but I only recently got into two strokes during covid ...... In that time I acquired 8 chainsaws and one was an 088 that needed a cylinder. I bought a new cylinder and piston which was the new style muffler so I welded up a two-stroke muffler from a dirt bike from a video I saw I also Port matched the exhaust port to the muffler and did a little bit of porting in the cylinder from another video I saw but I wish I had found your videos first. Thank you for the information you share, it's cool that you pass it on the way the gentleman who taught you did.

[@davidwright6050]

I’m an architect by trade. My brain doesn’t work like this. This is so impressive to me. Thank you! I will never port a saw but it’s always good to watch skilled craftsmen!

[@destinationom]

I won't be doing this myself and STILL FASCINATING. Watched the entire film, so cool to watch a professional. You never realize how specialized your work is until you have to explain to someone else!

[@DaveyBlue32]

Dude! Just seeing this and it’s freaking great… I was climbing the the 80’s and 90’s and was a poor WV kid with my homelite and Mac’s and my first real boss got me my 015 and 020 and 026 …. Now at 53 it’s building saw’s and flopping over and busting up the bigger ones… awesome sauce!!!! …. I’m super stoked that one of my favorite modern climber-dudes who I really like to catch his videos!!! “tube-guy’s” is going to have a fantastic saw from one of my favorite tube-builder’s!”… the “Cocky young buck!!!” I love how he drives other builder’s to …”shut it!”!!! LMFFAO’!!! This is fantastic!!!! Love both of you guys channels and work!!!!

[@bennyhill3642]

Theres a Big difference from truck engine heads and chainsaw heads... Gr8 vid thank you for showing your viewers a how to on this chainsaw!!! GOD Bless😇😁

[@peterchistolini9734]

Nice pet ladybug... thanks for sharing

[@arnoldschmidt2753]

I just started to get into gas powered chain saws since a friend bought a new Stihl.He taught me so much in a short time that now I want to know more .Thank you for your spirit and desire to pursuehaving the best tools avaliable and the best team menbers to make the day go by stress-free .Great video .2 stroke engines were never a part of my experience as a youngen. Today I learned a lot .

[@davidkelley8013]

I work on construction equipment for a living and that is way more complex than what I do. My hats off to you and thanks for showing me I don’t want to try to hop up my own saw.

[@andrewsarboricultureuk6168]

Fantastic video thank you both for taking the time to make this happen there's a lot of very greatfull people watching this absolutely brilliant so much detail 😎👍

[@GuiltyofTreeson]

Thanks I appreciate it.

[@ringofiremfg]

Cheers!!! Pretty amazing to have John willing to allow you to film and post. Appreciate all the tech info and the attention to detail!

[@mentalsid3701]

WOW!!! Dont know why John would think any of this video was boring ?? I was fascinated !!! So much so ive subbed to his channel !! Aw the best fae Scotland

[@psullivan40]

That was awesome! Long, sure but needed because of the details. John does a great job of explaining the why as well as the what. That really helps better understand how porting improves performance. A good follow-up to this type of video would be a tour of how Stihl makes the top end. The science in that process would probably make this video look like a walk in the park. Great video Jacob! Keep'm coming.

[@artillerest43rdva7]

wow that process is amazing! I have heard of porting and polishing with autos, never knew how complicated it all is! woderful skills and knowledge! thank you so much!

[@Finom1]

Just amazing, Bless you for sharing your wisdom with the world.

[@jdcriswell2499]

An amazing education... Its always great to see Great American's passing on their trade/craft. Definitely not boring... Always enjoy!

[@Nunya_Bidnez]

Knowledge is definitely power in this case. Thanks for sharing it.

[@TheKnightrous]

Thank you John and Jake for making this video. John, you’re a master of your trade!

[@nicolaslemieux9217]

Shoutout to the ladybug hitching a ride on John's neck.

[@Zogg1281]

Forget the surgeons, if I ever need heart surgery I'm calling John!!! 😂 So much information, if I ever do a saw I'll be watching this video and taking pages of notes. Thanks 👍👍👍👍👍

[@alotl1kevegas860]

I'm one of those 6 people grateful for the information provided 🙏. Just picked up a 200t to build my own limb reaper 😈

[@230e4]

Nice job bringing out the heart of a teacher in John in these video's. 👍

[@LongBinh70]

Great video, and thanks for the memories. I'm 72, and my Dad's machine shop was my day care. I was running a Clausing 13" lathe by the time I was 8 years old. I retired and sold the building two years ago, the new owner had no clue of what to do with the machine shop. The lathe sold for $500, $300 for the Bridgeport mill. Eight 30-yard dumpsters of metal and tooling went down the road. I'm still crying.

[@leftyeh6495]

That's your own fault. If you sold the building as a machine shop, you should have sold to a machinist. If you sold it as a building, you should have sold all the equipment yourself. Or you left so much old worn out tooling and tiny scraps they said screw it and scrapped it because they had newer better stuff to replace it....

[@mightyconker3903]

Brutal.

[@stevemishler831]

I'm 73 and crying with you. I've wanted those machines since high school machine shop, but never found $$

[@Mdcusin975]

Really cool video, thanks to John for sharing some of his secrets

[@mikeking3023]

Very impressive!!! It's great watching a professional at work.

[@gabesmith6475]

This was probably the most interesting hour and 16 minutes of the day

[@dp1381]

Wow, how very generous! THANK YOU for sharing this knowledge with the world!

[@1987coolhand]

I would happily let him port my saws, good job 👍 keep up the great work from the uk 🇬🇧

[@ryanhubble9157]

Got my first 200t today ill be using this as a guide soon

[@nicholasschlais3329]

Thanks for showing porting on a small saw awsome to see. I am definitely one of the 6 people that got alot out of it nice job!

[@magicone9327]

Used to do carbs for VW‘s. Put brass screen sandwiched at the base gasket to enhance atomization. It was called a bug spray carb.

[@docrw]

This is the most useful porting video's on youtube, PLEASE MAKE MORE!!!

[@DaveyBlue32]

A sheet of window glass is a very good “Flat Lap” surface and it’s very flat, cheap and easy to find… I do them by hand myself with holes cut out of boards that I’ve cut…. 😂👍. I’m actually laughing my ass off… I think this is one of the nicest and most humble I’ve ever seen John by in one of his videos… Respect for Treason!!! LMFFAO!!! Very very cool guy’s!!! And two cool guys!!!

[@peterlosangelos4108]

1:04:30, now I understand who I heard snoring earlier in the video :) Was already checking on my own cats.

[@wildmanturner]

Great video. Absolutely pro level work. I love porting saws

[@kylonendres8380]

Your the man bro, I'm definitely one of those 6 people who really got something out of this video. Very good job, you are talented! I really wish I could come port a few things with you. Keep up the great work!

[@DaveyBlue32]

“I’d hire me!”… there’s that little smartazz I Love!!!! LMFFAO!!!

[@briananderson7497]

I doubt I'll ever get a ported saw. I know for sure I will never port one myself. I hardly understand most of what John was saying or doing, though I was tracking pretty good. I absolutely enjoyed the video though. I figured a ported saw just had a few mods on it. I had no idea it was that thorough of an operation. Aside from great education, it is such a privilege to watch a professional do his craft. Great job.

[@e.lebrunet6311]

I'm glad I watched all of it just for the prize... Thanks to you and John for all the knowledge

[@LumberjackSmokestack]

Jacob and John, great vid. As a home saw modder I have zero problems with anything said here. As a logger, I love ported saw. And at the end of the day to guys like me it all that matters is that I can cut 100 plus’s trees a day and the beast keeps on going. Thanks for putting this out there and maybe we’ll bump into each other in the woods someday.

[@Chris-qf9qm]

This is an exceptional instruction video! Very informative. Thank you

[@DaveyBlue32]

Awesome video Boy’s!!! You guy’s should be proud of this… every young guy who wants to port should watch this!!!!

[@mkoutdoor]

This has been an awesome series. Some much useful info. Thanks Jacob and John!

[@DaveyBlue32]

Yeah man…. That’s a hot set of numbers straight up…some polishing and flow and it’s ripping! Great video Johneey Appleseed… you’re doing a fantastic job of explaining about how saw’s run and what they need and how you are trying to help it and how you aren’t hurting it… my man… this is one of your very best videos!

[@davidwheat84]

Sweet video. So much knowledge being shared, thank you.

[@coreymonday1375]

That ladybug was chillin

[@StrayWolfForge]

Very eye opening what go's into porting a saw. Can't wait for the next one.

[@t.r.766]

I have a bunch of old 020 saws from that time era Love the Dog snoring in the back ground sound !

[@iknowwhatudid712]

Awesome video many thanks and much respect

[@imashbuttons1734]

Watched the whole thing. It was jam packed with information and experience

[@batmantiss]

You guys are rock stars. I'm dreaming of racing out all of my saws now!

[@wreckdiver61]

great video the toping on the cake was the lady bug along for the ride the whole video

[@gary8483]

wow, fantastic video, thanks a lot guys. cheers from canada.

[@Dibelchii300]

I'm one of the six that's fascinated with this.

[@VK2FVAX]

Awesome video. Learnt even more! This guy and Tinman are awesome. Thanks for sharing the wisdom! Wish I'd seen this before I ported my first saw as a hobbyist recently. It worked really well but this would've been great.

[@Moosehound597]

More Gordy please that dude is a legend😎

[@lawrencemurray3494]

These type of videos have a worth not measurable. Sharing detailed knowledge is vital to humans relation and growth. Cheers fellows!

[@genehammond7239]

I did watch it all ,glad your having fun again Jacob !!!

[@dianncharlan5648]

Another great video Jacob!

[@OSHomestead]

Pretty technical. Thank you for the lesson.

[@mariomannelli9887]

John is the man no doubt about it!!

[@davidhonsey208]

you can tell the Lady Bug enjoyed this great video too!

[@garethkirby8249]

Awesome. A pro with passion and knowledge for what he does. Just like someone else on this channel.

[@jaythe306snowmexican]

Really awesome video. It's cool too see a guy share his knowledge on porting not to many guys do that. And it's even better to see a saw built that is going to be working not reving 15000 rpm with no torque.

[@johnscustomsaws]

Right on the money... I have seen em built for top end and they will scream high RPMs but they fall flat on their face in a cut... respect that you get what I was after thats pretty cool 💯

[@jaythe306snowmexican]

@@johnscustomsaws those saws aren't practical, especially for a working saw. Do you build 201T 's or just the bigger saws now.

[@johnscustomsaws]

@@jaythe306snowmexican 201s have such small carbs its hard to get any extra out of them without starving for fuel.. and they have a "chute" style lower transfer that sticks down and they can't be decked on a lathe... would need a milling setup... so I just do a mild timing advance and "dirty up" the strato intake if you know what I mean... and a muffler mod... they are a tough one... the newer ones do have domed pistons and they run a bit better... I hate to say it but the climbing saws will probably be all battery powered pretty soon... I ran Jacob's husky 540 battery powered saw and was very impressed... no idea on battery life or price etc but power was awesome

[@jaythe306snowmexican]

@@johnscustomsaws ok thank you sir, I'm not ready for the battery saws yet 🤣 . Thanks for all the help man I appreciate it.

[@handlebullshit]

Great job. Having a pet ladybug is pretty cool too.

[@albaek790]

Am i the only one who loved the little lady bug?🐞

[@Bdigital9482]

Glad to see your new channel succeeding. You deserve it.

[@rexgrosenbach1104]

Thank you for the information the 200 t I have 3 that came across that are all not working so the rebuild info was great thanks so much

[@joescissorhands141]

Oh Re the importance of setting squish --- Sure, it affects compression IE all things being the same a lower / tighter squish clearance will be more compression (smaller dislpacement at TDC), however I think we oftentimes forget just how much FUEL is stuck/wasted in there, from Jennings book he says that on a 250cc example going from 40thou to 20thou is literally putting 5% more fuel into the chamber (people have WAY over-inflated ideas about how much of the fuel in the squish-area is actually used, from what I've seen!) so minimizing the squish clearance is "good form" no matter what compression level you want to run, the optimization of the combustion-event is so critical (to performance as well as fuel-economy), the only reason OEM's don't send them out all at 0.02000"squish is because of "(in)tolerance build-up" in manufacturing, IE a connecting rod is a touch large on a particular unit, but its piston was also on the large side, and the cylinder was sitting a lil low -- now at 10thou squish the saw won't function properly. So OEM's *have* to set squish at higher-than-optimal levels, as a consequence of mass-production NOT of design-choice! Altering compression from stock is one thing (not a bad one, mind you!) but setting proper squish is just good-habit IMO, hardly even "a mod", it's like cleaning up bad casting or other artifacts of mass-produced engines!

[@lewster2000]

That was the best prize ever!!

[@jkgkjgkijk]

John, you can paint the inside with imron, metal etching primer but you need a booth and fresh air mask.

[@Kevin-ex2yb]

Another awesome video. I always get excited to see a video of yours go live. Nothing like watching a master at work. The length of the video doesn't matter when the content is that good.

[@elijahowens8507]

I appreciate this video. This is something I'm super interested in right now. I've got several saws I wanna try this out on.

[@chrisstock2011]

@johnscustomsaws I'm getting ready to port my first saw. Using this video as a guide. Im actually located in St. Cloud, MN. Was wondering if we could meet up and you could teach me some things. Thanks Topher

[@michelezeno1636]

Loved this oneJohn, really helpful. Thank You

[@million65555]

Great video. I have a echo that I'll give it a try. Thanks

[@budlvr]

Wow; had no idea it was that scientific, and also so much by experience. Great tutorial and video work. Have to say, just like Jacob, I didn't really understand much beyond the first step of raising the compression; that I did understand. Love to see the side by side test of the 200T's !

[@WildAcresFarms]

Pirting my first saw took me three full evenings; hyper-cautious, I would cut a few thousandths off of a port and then clean & reassemble. Then disassemble and grind some more.

[@Jmoneysmoothboy]

Definitely do not use polish on the exhaust ports you are 100% correct sir. Lots of polishes harm steel and aluminum in a way that is not visible but as the engine is used the harm will show up as excessive wear or brittleness and other things. Polishes are fancy concoctions of chemicals and abrasives that shine things up extremely shiny and really fast but really are just for aesthetic purposes and shouldn't be used without extreme caution on mechanical devices. Using a scotch brite on aluminum will create aluminum oxide dust which is a major abrasive used in polishing compounds anyway so you just add a little oil in the form of WD-40 and you have yourself an aluminum oxide lapping compound which is great for polishing aluminum and wont damage the steel cylinder. If Johns custom saws reads this I would recommend you switch the WD-40 for synthetic motor oil and mix in aluminum dust to make it a polishing compound you might have to play with the amounts of each. Use a rag or cloth on your die grinder with the oil and aluminum dust instead of a scotch brite for the polishing step. Also I can't stress how important it is to clean everything thoroughly because its all coated in aluminum and steel dust after the sanding and polishing which will wreak havoc on bearing surfaces. Even if you can't see the metal dust it is still there and will soon be grinding your bearings to paste. The absolute best way to clean these parts is with an ultrasonic bath.