As a retired diesel mechanic I understand what you are trying to teach people. I remember in the late 60s and early 70s some of the young HOT RODDERS would stop by the shop and ask me to solve a problem. Which was always the basic. I would tell them you have to get it IN and then get it OUT!!!
This is one of my favorite channels!! Every day I watch you, Buckin, and Tinman. You guys make me want to port my saws!! I don't have the tools for it so, maybe someday. Are you taking customers for your work? I'd love to have an Ironhorse ported saw!
I really enjoy learning from the years of experience you share with us. I feel very confident in your numbers to build real raw power with dependably. Thanks again Harv
I enjoy your videos I have a 286 and it's tore down right now and I'm getting ready to put an extra 41 mm barrel and piston in it now so I'm going to build one of those exhaust deals that you got on there too that's awesome keep it up
Watched till the end again 🤣 what.. I always do love every minute of this Chit! Verble Nectar from the GODS I tell ya !😎🥺👊👍👍 Hope ya'll are well Harvey herp on keepin on!!
He’s right about compression on two strokes. It effects power band difrent in 4 strokes. I’m old school dirt bike guy. Just now starting to learn on small engines im getting ready to tinker on a saw
Not that anyone was asking. Lol but I tend to listen to people that arnt full of crap. This guy seems to know 2 strokes. I am just curious if size matters going from 250 cc to smaller saw type stuff.
I appreciate your videos! I'm glad to see this type of content on YT finally I thought I might help to clarify though, in fluid dynamics, laminar flow is smooth. I believe you meant that you want turbulent flow at the boundry between your intake charge, and intake tract.
Laminar flow is "smooth" whereas turbulent flow is "rough". Layers of laminar flow don't mix and maintain their fuel:air ratio. Turbulent flow layers will swirl and have vortices and these rough conditions will allow mixing which can lead to pockets with high fuel:air ratios causing the fuel to fall out of suspension. Laminar is preferred as you said, however, laminar isn't rough, laminar is smooth. Fluid dynamics is more difficult than rocket science, and discussing it on video while fixing chainsaws is near impossible... So you're still the man, rock on brother, and thank you !
Awesome video Iron horse I thank you for sharing so much of your information and you techniques and your time I’m honored and excited got me on the edge of my seat with a smile from ear to ear that cylinder looks beautiful 😀 hope you and yours have a wonderful day.
@@theironhorse6600 that’s awesome news Harvey thank you I’m truly impressed by your work and your techniques master hands at work 🙂 the Iron horse I’ll be watching have a wonderful day
just found your channal through Tinman, love the videos, now i want to get another saw to try porting!! a cheppo that dosnt matter if it wreck it, as i kinda need the other two i have just now although one off them might blow up soon whewn i start milling with it haha.
Mr Ironhorse, I want to say thank you, I over enjoyed your video, you have a gift, you put lives into Saws and we here in Europe have great respect for your talent. May I ask you please to build or modify one to the Company of Husqvarna in Sweden, I will be joyful to see you in Europe, just do it as you still have the power to do so. Visit the home of Husqvarna, and because of you Most of us has cultivated great interest on old great Saws. This will add to your legacy sir. Thanks to you, a father and a friend.
In one of your videos you asked what saws I run, to start with I had an .076 Stihl and an MS290 that were stolen. I now have 2-MS290 Farmboss , 1- 440 Magnum and I have a 660 Magnum. Saws that were given to me that I am trying to fix 1-MS271 and a .029
I try an build my saws with as much blowdown I can give them that's why I cut my bases an move ex on most builds an big lowers I seem happy with how they preform for me
660 12 mm wrist in 880 wrist in 13 mm but 880 needle bearing rollers smaller allows 880 to fit 660 small end rod journal. So wrist 660 and 880 makes good combo hey.
So from what i understand as stroke increases and bore decreases you can raise your exhaust roof higher where as stroke increases and bore decreases you want a little bit lower exhaust roof. As rpms increase you want more blowdown. I wonder if you can have to much blowdown. Also carb, intake, case, and transfer flow are king. Case and transfer volume help as well. The trick for getting more case volume must be interesting... 🤔 It might be that trick you were gonna do on transfers by drilling a hole and running an airtube into a cartridge. I would think dimples such as those on a golf ball might help slightly with volume while still keeping the crankshaft close to case to help push air and also build laminar air keeping the fuel in suspension.
I am new to this so forgive me. Your opening sentence of “ as stroke increases and bore decreases you can raise your exhaust roof “. Your counter to that is your finishing of the statement, you want a little bit lower exhaust roof. Meaning it’s better to have the lowered exhaust roof. That being attained by decking?
Thanks Harvey great video I love the numbers I took notes. I will be building a notebook playing with porting some curbside weed eaters now before I go to saws to get my head wrapped around learning curve from 4cycle to 2 cycle. My 1st saw port I think will be a cheap Walmart black max saw I picked up.
Uncle Harv, you've spent years learning logging stuff. I'm here to learn what I can about chainsaws and I also learn about life too. You make my day when you post something and it's all good. Be safe as this too shall pass, one day at a time...
Good morning Harvey. I have watched many of your videos and Buckin’s, Outdoors with the Morgans, guilty of treason and in the Woodward. I love watching them all. I have watched tests on all kinds of saws. One brand against another. One cc size against another, etc. my question is as follows: if you or the people in the business can take a stock saw and port it into a much better performer, why don’t the big manufacturers come out with a higher performance saw out of the box. I have seen people buy brand new saws and have them ported immediately. If for instance Husky or STIHL made a fully ported saw or a saw to the specs that you or others would operate at, wouldn’t that be a selling point to the pro logger? I am confused! Does a ported saw have less life expectancy than an out of the box saw just by the fact that some of the meat(or mass) is removed. I am hading for 81 and don’t do a heck of a lot of chainsaw work any more but I am still not afraid to get in a log pile and make some sawdust. I enjoy your channel. Thanks for many hours of enjoyment. Poppy
Yeah story time is fun, did you see the fire and excitement light up in his eyes about that p38 and all I absolutely love it, that's passion right there
hi harvey, any thoughts on porting for hardwood? being in australia that is basically all i cut. do you think that running much shorter bars means the same porting would be ok? or would we be better off going lower on the exhaust roof to keep compression up? thanks.
So about the 272 vs 372 bore size, is there a disadvantage of using the 52mm kit on a 372? I've read people say it doesn't gain much because of extra piston weight and it doesn't make any more power, but you've used plenty of 52mm 372 kits so I'm curious. I've also used them but it future probably won't because there's no nice 52mm pistons available to me here
I've got a husky big bore cylinder on one of my 372 non xtorq that's ported and machined and can definitely tell it pulls more then my standard ported 372
laminar flow = smooth , Nonturbulent flow ..... which means smooth . .... you need laminar flow through the ports for maximum airflow . but you also need turbulent flow to vaporize gasoline and hold it in suspension .... turbulent flow is at odds to laminar flow pick your evil and live with the consequences
Just had my tinman fix, buckn fix, now UNCLE HARVE POPS UP! AAWESOME I so excited love you brother
Bell hopper got some good vids
@@lakestatebullies7391 no doubt
As a retired diesel mechanic I understand what you are trying to teach people. I remember in the late 60s and early 70s some of the young HOT RODDERS would stop by the shop and ask me to solve a problem. Which was always the basic. I would tell them you have to get it IN and then get it OUT!!!
Exactly!
I love people like you who share their experiences and knowledge passed down to them from mentors with people like me. Thank you
This is one of my favorite channels!! Every day I watch you, Buckin, and Tinman. You guys make me want to port my saws!! I don't have the tools for it so, maybe someday.
Are you taking customers for your work? I'd love to have an Ironhorse ported saw!
I really enjoy learning from the years of experience you share with us. I feel very confident in your numbers to build real raw power with dependably. Thanks again Harv
That gonna be a real beast of a saw when your done working your magic on it..nice to more of you lately..always good times...
Thank you for everything mr harvey, seriously
It's really very kind of you to freely share your knowledge with us thank-you.
Buckins pioneers u built are beasts u are the pioneer papa. Thank u 4 all u do.
I look forward to your videos so much, you're the first thing I pop on when getting home. Love ya bud and thanks!
Great video. Love the number info. Watched til the end again as always!
First time watching one of your videos. Came over from tinman. This saw community is new to me and top notch. Thanks for the content
Thank you Iron Horse for your expertise. Trying hard to absorb the numbers!!
First time I've watched you and what a great teacher you are! Thank you
Thanks Harv. We all appreciate you sharing your knowledge.
Freaking love ya Harvey. Ur knowledge on saws is out of this world. Thanks for sharing ur secrets. Maybe someday I'll try porting a saw....
Awesome video Ironhorse!
I’m pick’n up what you’re put’n down!
Thanks for passing on your knowledge.
I enjoy your videos I have a 286 and it's tore down right now and I'm getting ready to put an extra 41 mm barrel and piston in it now so I'm going to build one of those exhaust deals that you got on there too that's awesome keep it up
Watched till the end again 🤣 what.. I always do love every minute of this Chit! Verble Nectar from the GODS I tell ya !😎🥺👊👍👍 Hope ya'll are well Harvey herp on keepin on!!
Hi Harvey, thanks for sharing this knowledge, its all building a good base for when I big bore/port the next 372. Many cheers from NZ
He’s right about compression on two strokes. It effects power band difrent in 4 strokes. I’m old school dirt bike guy. Just now starting to learn on small engines im getting ready to tinker on a saw
Not that anyone was asking. Lol but I tend to listen to people that arnt full of crap. This guy seems to know 2 strokes. I am just curious if size matters going from 250 cc to smaller saw type stuff.
I appreciate your videos! I'm glad to see this type of content on YT finally
I thought I might help to clarify though, in fluid dynamics, laminar flow is smooth. I believe you meant that you want turbulent flow at the boundry between your intake charge, and intake tract.
Awesome video Harvey.
Can't wait for the next one !!😊👍👍👍👍🇺🇸🌎🌞
I'm glad u shared this video makes u look at thangs so different keep it coming iron horse
I always appreciate the info Harvey, loved the video as always!
100% appreciate you sharing your knowledge. Thank you
Always wonderful to ingest some Ironhorse wizardry. Luv ya Harv..
So awesome of you to share!!!
Laminar flow is "smooth" whereas turbulent flow is "rough". Layers of laminar flow don't mix and maintain their fuel:air ratio. Turbulent flow layers will swirl and have vortices and these rough conditions will allow mixing which can lead to pockets with high fuel:air ratios causing the fuel to fall out of suspension. Laminar is preferred as you said, however, laminar isn't rough, laminar is smooth. Fluid dynamics is more difficult than rocket science, and discussing it on video while fixing chainsaws is near impossible... So you're still the man, rock on brother, and thank you !
Perfect video Harvey. Awesome!! As always WORK SAFE 🇺🇸🇺🇸😎😎
Thank you Harvey for sharing, I really look forward to speaking to you in person!!!
Hey Harvey I would look into Devcon epoxy I've seen it used in Caterpillar marine diesels to repair rusted parts .
God bless you and your family like always looking forward to your next video, thanks for everything you do. With love Jay small
I needed this video bad, great content, just what information I needed for something I'm trying
Thank you sir. Fantastic vid information. Modeling clay who knew. Be safe and be careful.
Awesome video Iron horse I thank you for sharing so much of your information and you techniques and your time I’m honored and excited got me on the edge of my seat with a smile from ear to ear that cylinder looks beautiful 😀 hope you and yours have a wonderful day.
Thanks Ben! Nothing but the best for you! You have been very patient! Going the extra mile for you!
@@theironhorse6600 that’s awesome news Harvey thank you I’m truly impressed by your work and your techniques master hands at work 🙂 the Iron horse I’ll be watching have a wonderful day
Great technique 👌 Harv
Awesome video Harvey.
Solid gold content man...
I learned during my first grinding, smooth lite pressure.
Thanks IH.
Thank you for sharing your wealth of knowledge Nice to see someone who does not need Google keep them coming please
I have a partner 5000 plus in Australia . Great videos I’m Learning so much from you thanks
Great video,I port 1/5 scale RC 2 stroke engines .your very informative info
Great content!!
Philadelphia checking in. Digging the content fella.
just found your channal through Tinman, love the videos, now i want to get another saw to try porting!! a cheppo that dosnt matter if it wreck it, as i kinda need the other two i have just now although one off them might blow up soon whewn i start milling with it haha.
i dont know schitt from shinola !!, but i know more now than i did !! Thanks Mr.IronHorse
Looking forward to seeing the p51 I sent ya get built. I heard rumors of buckinstock 2022. B awesome to c the dueling pioneers
Mr Ironhorse, I want to say thank you, I over enjoyed your video, you have a gift, you put lives into Saws and we here in Europe have great respect for your talent.
May I ask you please to build or modify one to the Company of Husqvarna in Sweden, I will be joyful to see you in Europe, just do it as you still have the power to do so. Visit the home of Husqvarna, and because of you Most of us has cultivated great interest on old great Saws.
This will add to your legacy sir.
Thanks to you, a father and a friend.
Thank you for a great video
love it, tanks for sharing !
I love it every minute I’m not a builder but I sure would like to have my 371 built by you maybe someday
Lots of information thanks
Thanks, Harv!
I have seen saws you built. They Cut Der Guy. Because of you I been porting saws. Look at my ms661 mag on my channel. Thanks Der Guy.
thanks 4 video. be kind...
Love the vids
Good Video Sir..... Btw you look like the guy from American chopper but for Chainsaw.....👍👍
Great vid as always
👍 Good stuff!!!
Thank you man!! 💪
In one of your videos you asked what saws I run, to start with I had an .076 Stihl and an MS290 that were stolen. I now have 2-MS290 Farmboss , 1- 440 Magnum and I have a 660 Magnum. Saws that were given to me that I am trying to fix 1-MS271 and a .029
I try an build my saws with as much blowdown I can give them that's why I cut my bases an move ex on most builds an big lowers I seem happy with how they preform for me
Your saws run out impressively after built buddy. Cool to see good builders watching each other
660 12 mm wrist in 880 wrist in 13 mm but 880 needle bearing rollers smaller allows 880 to fit 660 small end rod journal. So wrist 660 and 880 makes good combo hey.
Love the old axe hanging on the wall. Don't forget to oil it this year
schools in session good stuff harvey
So from what i understand as stroke increases and bore decreases you can raise your exhaust roof higher where as stroke increases and bore decreases you want a little bit lower exhaust roof. As rpms increase you want more blowdown. I wonder if you can have to much blowdown. Also carb, intake, case, and transfer flow are king. Case and transfer volume help as well. The trick for getting more case volume must be interesting... 🤔 It might be that trick you were gonna do on transfers by drilling a hole and running an airtube into a cartridge. I would think dimples such as those on a golf ball might help slightly with volume while still keeping the crankshaft close to case to help push air and also build laminar air keeping the fuel in suspension.
You connected the dots!
@@theironhorse6600 All thanks to you and Tinman!
I am new to this so forgive me. Your opening sentence of “ as stroke increases and bore decreases you can raise your exhaust roof “. Your counter to that is your finishing of the statement, you want a little bit lower exhaust roof. Meaning it’s better to have the lowered exhaust roof. That being attained by decking?
Anybody associated with Buckin', I'm watching and supporting.
Thanks Harvey great video I love the numbers I took notes. I will be building a notebook playing with porting some curbside weed eaters now before I go to saws to get my head wrapped around learning curve from 4cycle to 2 cycle. My 1st saw port I think will be a cheap Walmart black max saw I picked up.
Keep sharing please
Uncle Harv, you've spent years learning logging stuff. I'm here to learn what I can about chainsaws and I also learn about life too. You make my day when you post something and it's all good. Be safe as this too shall pass, one day at a time...
Couldn't have said it better myself
Is it possible to rebuild 051AV stihl? I ran them when they were new,antiques now.your a great teacher Harvey
Look into the 075-076 111cc conversion. My parts are coming tomorrow :-D
Hi Iron horse
Do you enlarge the transfers all the way to the upper inlet ??
Good morning Harvey. I have watched many of your videos and Buckin’s, Outdoors with the Morgans, guilty of treason and in the Woodward. I love watching them all. I have watched tests on all kinds of saws. One brand against another. One cc size against another, etc. my question is as follows: if you or the people in the business can take a stock saw and port it into a much better performer, why don’t the big manufacturers come out with a higher performance saw out of the box. I have seen people buy brand new saws and have them ported immediately. If for instance Husky or STIHL made a fully ported saw or a saw to the specs that you or others would operate at, wouldn’t that be a selling point to the pro logger? I am confused! Does a ported saw have less life expectancy than an out of the box saw just by the fact that some of the meat(or mass) is removed. I am hading for 81 and don’t do a heck of a lot of chainsaw work any more but I am still not afraid to get in a log pile and make some sawdust. I enjoy your channel. Thanks for many hours of enjoyment. Poppy
I know there new, but have you ported a 372 x torq cylinder? I have not been able to find any info on the intake porting on these new saws, thank you
Wicked Ironhorse!
Hello from Piqua Ohio
Hey Harvey 👋 A Story would be Great 👍
You got it skippy!
Yeah story time is fun, did you see the fire and excitement light up in his eyes about that p38 and all I absolutely love it, that's passion right there
The bigger case volume is lowering decreaseing the pumping loses therefore the engine can rev higher!
Yer exactly right!
hi harvey, any thoughts on porting for hardwood?
being in australia that is basically all i cut.
do you think that running much shorter bars means the same porting would be ok? or would we be better off going lower on the exhaust roof to keep compression up?
thanks.
I am in Western Australia mainly Jarrah and wandu for firewood I use a ported early model 372xp with a tune pipe and it goes good and reliable
Is there ever a case of over enhancing of transfer ports?
So about the 272 vs 372 bore size, is there a disadvantage of using the 52mm kit on a 372? I've read people say it doesn't gain much because of extra piston weight and it doesn't make any more power, but you've used plenty of 52mm 372 kits so I'm curious. I've also used them but it future probably won't because there's no nice 52mm pistons available to me here
I've got a husky big bore cylinder on one of my 372 non xtorq that's ported and machined and can definitely tell it pulls more then my standard ported 372
Will a 72 cc jug and piston fit on a 266xp Husqvarna thanks in advance...
272 cylinder fits!
Oh my all 3 in a row
Do you sell ported cylinders
The surface of golf balls are dimpled, rough, like the cast aluminum surface of the intake.
hi Harvey. do you remember your first porting you did. was it on dirtbike or saw.?
It was on a dirt Bike! A 78 Yamaha 400
@@theironhorse6600 those are nice bikes.
Fast too!
@@theironhorse6600 yes a can image that.
@@theironhorse6600 when powerband kicked in you knew it hold on !
👍🏻
Regarding raising the top of the transfers....."when my fat ass can float in air, that will probably work for you". that was hilarious
Hi
Harvey you saw whisper stay safe and hammer down
Harv, you gotta warn a guy before you start dropping knowledge bombs! I didn't have my helmet!
Hey man, how's the Echo 670 from Tinman treating you?! I just watched that series on porting the CS-670
⬆️😎
buckin billy sent me your way
I want an orangutang hahaha
What's up
+++++++++++++++
To much math that goes into this I way to stupid for this 🤣🤣
laminar flow = smooth , Nonturbulent flow ..... which means smooth . ....
you need laminar flow through the ports for maximum airflow .
but you also need turbulent flow to vaporize gasoline and hold it in suspension ....
turbulent flow is at odds to laminar flow
pick your evil and live with the consequences
Well said Charles!
Why would you need to port a chainsaw is there tree feeling race's lol