I just got into working on chainsaws and using them and it has really gave me some purpose and I’m gonna learn how to port but I’m a big dumb ass so it’s gonna take a while, thanks for the video
Thanks for the demo. I worked on saws as a guy who just got them to run by carbs and adjustments. I had about 40% failures or so. Now that I have more knowledge my success rate is higher. i totally got what you are doing. I have porting in my future and now that I can measure all the pressure points (crank seals etc) with pressure testing I am having fun with 2 strokes at 65 years of age. Cool eh!!! Thanks again.
Very good information, I'm remembering back in mid 80 early 90 I helped a mechanic put sleeves in an old 4 series Detroit Diesel maybe 471 or something, he explained the intake, compression, combustion and exhaust and how it took place in 2 strokes of the piston. The sleeves had a series of square rectangular ports in the sleeve where the blower on the side of the block forced air to be picked up on the way to tdc. Wow it's crazy how you will forget things when you don't do them regularly. I remember as a 20 something year old gaining much respect for a good engine builder!!! Thank you for reminding me of those good days I always asked questions and wanted to learn this stuff, people don't realize the skills that guys like yourself have are not learned over a couple of months it is years of doing and experimenting!! Thanks again for your effort and sharing your knowledge!
Tinman, Ironhorse recommended your channel for two stoke information and as a new subscriber I am glad I made the trip. Great explanation, well done! Nick, North West Farmer
This is an OUTSTANDING lesson on these motors! It really solidifies in my mind, the relevance of timing numbers. Ironhorse sent me and I'm here to stay. GREAT work!
Just want to thank you for your video on rebuilding a carb on a Mac 10 10. I'm reworking an old right hand start and your detail in explaining the positioning of the gaskets in the carb was so helpful. Other RUclipsrs had it sooo wrong. They didn't even know the difference between the ethanol components vs non ethanol. Thank you
This video, as well as many of your others, have gone a VERY long way in helping me understand porting and the operation of saws in general. I'm new in the saw game but have taken a deep interest in them after I lost my job. So needless to say I have watched countless videos from a bunch of different channels but I never felt like I had a complete grasp of what they were trying to explain until I find one of your videos on the same subject. Then in the first 2 minutes you do what others couldn't manage to do in hours and then I go drive my wife crazy because I won't quit talking about saws! Keep up the great work and don't stop doing what you're doing. For young guys like me that are just taking an interest in saws, your videos are indispensable and a gold mine of knowledge for saws. Something that, for the are I live in especially, Is hard to find if not impossible. So thank you for the videos!
Thanks a lot for this video tinman definitely feel I have a better grasp of 2 strokes, explained in a way I really think anyone could understand without getting discouraged
Best explanation and visual of the workings of a piston port 2 stroke that I have seen! Very good of you to give away your knowledge in the pursuit to educate others, well done mate from down Under.
This is an awesome video. Really clarity’s how 2 strikes are basically backwards from a 4 stroke where the charge enters the cylinder from the top side of the piston.
I know I'm about a month or so late on this, but this is good stuff. Between you and Kensie over at Bayou Country Power saws, good old school basic "this is how it works". Wicked good stuff. And Yes, "this video works".
Hi Tinman, The Ironhorse sent me! I'm not a great saw builder, i just make good what i have and keep them running strong. Your vid was 👍it made it really clear in my simple brain, thank you! Look forward to see more from Scotland.
Very good introductory video on 2 stroke porting. Porting 2 strokes it's not an exact science as there are many variables to be taken into account. I have built and raced 2 stroke engines for over 40 years and I very familiar with the top end 2 strokes that can make more than 400HP per 1000cc equivalent. I am new to chainsaws (I just recently moved off grid and have to do my own wood) but fascinated and keen to try to push the limits on a chainsaw. Like it is said in the video a 2 stroke engine is an air pump and if you figure how to put more air (fuel mixture actually) into it and burn it fast you develop more power. In a 2 stroke you can get more power as following: 1. up to 40% more from the exhaust (proper tuned expansion chamber exhaust), 2. 10-50% more compression ratio and correct squish band, 3. 20-30% transfer ports and correct volumetric ratio between crankcase and cylinder (above the piston), 4. 15-20% from carburettor tunning alone and the rest 10-20% is in the type of fuel and oil ratio you use, type of oil, spark plug heat value, ignition timing and last but not least the specific power band you want the engine to perform at max torque. Like it is said in the video just buy second hand parts and have fun, who knows you may get something!
Great video. You can never have enough basic detail. I wish I'd found this many years ago. People can always skip past the bits that they know :) Hate to tell you this, but you know a lot, you express yourself well .. you're a teacher. Keep em coming.
Tinman, The Ironhorse gave you a shout out so here I am. I learned something's after watching your port mapping a Stihl MS461 video. So I subscribed as I just bought a MS460 built in 2009, too much compression for me to check with compression gauge but it's easy to start Thanks for teaching us things, I'm here to learn what I can so thanks for the education and entertainment too.
Hey thx tinman..good shit..im a little late to the game at 48 but needed to learn how to work on my saws as I've been getting alot of logs bigger than my bandmill can handle..just built my first 660 kit n so far so good..ive found alot of pics of a mastermind ported cylinder n copied or tried n about to give'r a rip..thanks your videos were the ones that made it all come together for me w the wheel n timing..now it makes sense!!😂..have a goodun!!
Awesome description of what’s going on, I’ve heard of porting but not clear on what it is till now. Seen a few of your videos, and buckin BR shouted you out too. Excellent work on that Homelite man!
I see a bunch of guys breaking out the die grinder, tearing down saws, spending nights in the garage, while the wife screams," Honey, get out of that garage, and come port this!"
Good explanations. I've been watching a few videos by Ironhorse and it's good to see a saw builder who describes the processes instead of just showing a ported saw hacking into a log or 2. Hoping that you also do a reed version.
COOL VIDIEO!! and to make it more confusing when the exsaust port opens it produses a shock wave that travels into the silencer and a tuned pipe when set up propaly sends it back towards the exsaust port and hits it just as the trancfer ports open and block the new charge from escaping out the exsaust so you are burning more of the charge and predusing a bigger bang!! although i'm no expert and don't have a clue how to set them up but thats basicly what a tuned pipe dose on a 2 stroke.
Absolutely it is a perfect place to start. I have ported for strokes since I was a kid never really did much with two strokes other than clean up the ports because I didn't understand the timing end and didn't want to change it. But a few months ago I decided to start playing around with these curbside throw away weed eaters they're cheap and they're everywhere for free. Get on eBay or Amazon and buy yourself a timing degree wheel you can pick them up for less than twenty bucks well you're there buy a Dremel with a flex shaft and a set of carbide bits. Also a set of carburetor adjustment tools the 21 spline seems to be the most common and a package of fuel line. Each item here will be under $20 you could add a digital tach and still be under a hundred bucks. Get your engine running to the best it can run. Then put your degree wheel on it and write down your stock timing numbers in a notebook. Check your squish with some solder record that. Remove your base gasket if the engine your working on has one see where that put you record those timing and squish numbers. Make a plan and start carving. Sharpies layout bluing and a flashlight are your new friends. Put it back together see what difference should changes madeobviously most of the time you're going to have to change your fuel settings on that carburetor. Even just a muffler mod will change your fuel setting requirements. Most important don't be scared and have fun good luck my friend!
First! Lol. Man this is a great video Tinman. You got some good info and explain it well. Thanks buddy. Have a great weekend and be safe. We'll see ya down the road...
Thank you for your humility and knowledge brother, I appreciate your time, effort and guidance. I have a new 372 xp x torq and was curious to know what tool would you suggest using two add a hole on the muffler? I want it to look clean and most of all function well. I guess some scratches wouldn’t be the end of the world considering it’s a saw muffler but I am super OCD lol. Hopefully not wasting your time and I could just look it up but I value your opinion tinman
So lets go through the cast of characters in this video, 1 muffler, a wooden bench top, a scrench, and some freely given knowledge, 1 Tinman, no Dorothy, its gold ! good one Mate !
Hi Tinman this comment was for your muffler mods Vid, I guess you cottoned on to that, I got on to you through Ironhorse and BBR, am really enjoying your content, keep it up !
Very informative video. How much $$ will one save by doing their own porting and polishing? Are most of the aftermarket cylinders/pistons able to be ported and polished?
Love your information..I can't find any information regarding kickback. Pre ignition when starting your saw.. stihl460,,,660 flywheel and keyway are fixed timing. I'm firing before tdc.. I got 2 saws I can't start..new short blocks on both saws. Any ideas?thank you
Been a mechanic for over 40 yrs. By no means an engineer. 2 strokes have way less moving parts than a valved 4 stroke, but my peabrain has to actually work some to know the different operating principles, and specifics. Have worked on a 2 stroke diesel, they are cool.
Damn Tinman’s saws, you got love from THE IRONHORSE. You must be doing something right. If you feel like you have to do another video, I’d like to see one about that degree wheel and how you go through the process of timing. Spoke too soon.... I found it😬
I been seeing some saws that the exhaust is getting hot spots and carbon buildup. My question is can you take a die grinder with a cutoff wheel and place grooves on the skirt to help pull a draft around that side of the skirt to help cool it off?
Good stuff friend. I wonder what timings work best on intake and exhaust ? ? ( for you) or does it change with the model of the saws you are working on?
Ironwood, welcome to the channel. Every saw is different so unfortunately its not just a matter of "use these numbers" Also it really depends on what you want to cut, how long of a bar and how you operate a saw. I'll be doing more videos on port timing very soon.
@@tinmanssaws Thank you :) ... I see ( said an old half blind Wood-Man) 90% of the time a run a 32" bar with 90cc class saw (394xp, 066, J-Red 2095 etc) I will be watching for the new videos. Thank you for the info :D Until the next time, take care friend.
Would you explain the resistance to exhaust flow that a muffler provides in relation to the compression stroke and why it affects engine performance. Basically I'm asking why a 2 stroke engine will run with the muffler removed and the same engine will not run when the stock muffler is installed, even if the stock muffler is not clogged. Will port timing influence the amount of muffler restriction required to provide optimal engine performance?
I already know all that. But now i know i don't know it all. You know what i mean? Are you going to touch on rotary valves? That's cool too. Detroit diesel have 2 cycles also, i believe piston ported. I think you need a tripod. Sound is good. Put some air in tire on lawn mower. Oh i just subscribed, i have more to tell you!
two strokes are simple but apparently 75% more power than 4 stroke , not as efficient but interesting, i rebuilt 2 stroke diesels for a while that was an interesting few months working at a friends business reconditioning train engines etc. you have a good nature just like Harvey said.
This man has an excellent grasp of 2 strokes! Pay attention! Great job Tinman! If you want I will give you a shoutout on my channel!
Hey Harvey, I'm super flattered, if you feel I am worthy of a shoutout I'd gladly take it, I need all the help I can get.
you will have 10k subs sooooon
Dam it Harvey, now I have more must watch videos. The wife says I get home from work and eat then go turn on my TV and watch RUclips. Lol...
love you ironhorse
I'm impressed....
Since the feedback has been positive I think I will do further videos like this..
Thankyou everyone for the kind words!!
Just subscribed. :)
YEEEEESSSSS!!!!!
I just got into working on chainsaws and using them and it has really gave me some purpose and I’m gonna learn how to port but I’m a big dumb ass so it’s gonna take a while, thanks for the video
4 stroke guy here. Thank you so much for taking the time to make this video.
Thanks for the demo. I worked on saws as a guy who just got them to run by carbs and adjustments. I had about 40% failures or so. Now that I have more knowledge my success rate is higher. i totally got what you are doing. I have porting in my future and now that I can measure all the pressure points (crank seals etc) with pressure testing I am having fun with 2 strokes at 65 years of age. Cool eh!!!
Thanks again.
Good video. I had a mental block of the flow path of the air/fuel charge. Thanks 👍🏻
Very good information, I'm remembering back in mid 80 early 90 I helped a mechanic put sleeves in an old 4 series Detroit Diesel maybe 471 or something, he explained the intake, compression, combustion and exhaust and how it took place in 2 strokes of the piston. The sleeves had a series of square rectangular ports in the sleeve where the blower on the side of the block forced air to be picked up on the way to tdc. Wow it's crazy how you will forget things when you don't do them regularly. I remember as a 20 something year old gaining much respect for a good engine builder!!!
Thank you for reminding me of those good days I always asked questions and wanted to learn this stuff, people don't realize the skills that guys like yourself have are not learned over a couple of months it is years of doing and experimenting!!
Thanks again for your effort and sharing your knowledge!
Tinman, Ironhorse recommended your channel for two stoke information and as a new subscriber I am glad I made the trip. Great explanation, well done! Nick, North West Farmer
This is an OUTSTANDING lesson on these motors! It really solidifies in my mind, the relevance of timing numbers. Ironhorse sent me and I'm here to stay. GREAT work!
Just want to thank you for your video on rebuilding a carb on a Mac 10 10. I'm reworking an old right hand start and your detail in explaining the positioning of the gaskets in the carb was so helpful. Other RUclipsrs had it sooo wrong. They didn't even know the difference between the ethanol components vs non ethanol. Thank you
Riding in on the ironhorse express! Great stuff mister!!
Best explanation I’ve seen! Thanks for sharing buddy! 👍👍👍👍🇺🇸🇺🇸🇺🇸🇺🇸🙏🙏🙏🙏
Very glad Ironhorse gave you a shout out, glad to be here!!! Thank you
Welcome to the channel!!
Really enjoy your channel and what you are doing.
Thanks
Excellent video. You are a teacher. I have ZERO mechanical experience and completely understood the process. IRONHORSE sent me and i'm glad he did.
This video, as well as many of your others, have gone a VERY long way in helping me understand porting and the operation of saws in general. I'm new in the saw game but have taken a deep interest in them after I lost my job. So needless to say I have watched countless videos from a bunch of different channels but I never felt like I had a complete grasp of what they were trying to explain until I find one of your videos on the same subject. Then in the first 2 minutes you do what others couldn't manage to do in hours and then I go drive my wife crazy because I won't quit talking about saws! Keep up the great work and don't stop doing what you're doing. For young guys like me that are just taking an interest in saws, your videos are indispensable and a gold mine of knowledge for saws. Something that, for the are I live in especially, Is hard to find if not impossible. So thank you for the videos!
Thanks a lot for this video tinman definitely feel I have a better grasp of 2 strokes, explained in a way I really think anyone could understand without getting discouraged
Best explanation and visual of the workings of a piston port 2 stroke that I have seen! Very good of you to give away your knowledge in the pursuit to educate others, well done mate from down Under.
Damn great explanation!!
This should get a ton of views
This is an awesome video. Really clarity’s how 2 strikes are basically backwards from a 4 stroke where the charge enters the cylinder from the top side of the piston.
I know I'm about a month or so late on this, but this is good stuff. Between you and Kensie over at Bayou Country Power saws, good old school basic "this is how it works". Wicked good stuff. And Yes, "this video works".
Super informative, appreciate your breakdowns and attitude towards sharing knowledge.
Hi Tinman, The Ironhorse sent me! I'm not a great saw builder, i just make good what i have and keep them running strong. Your vid was 👍it made it really clear in my simple brain, thank you! Look forward to see more from Scotland.
Hey Billy welcome.
Same here buddy, I work with what I got and believe me I'm no expert saw builder either.
Very good introductory video on 2 stroke porting. Porting 2 strokes it's not an exact science as there are many variables to be taken into account. I have built and raced 2 stroke engines for over 40 years and I very familiar with the top end 2 strokes that can make more than 400HP per 1000cc equivalent. I am new to chainsaws (I just recently moved off grid and have to do my own wood) but fascinated and keen to try to push the limits on a chainsaw. Like it is said in the video a 2 stroke engine is an air pump and if you figure how to put more air (fuel mixture actually) into it and burn it fast you develop more power. In a 2 stroke you can get more power as following: 1. up to 40% more from the exhaust (proper tuned expansion chamber exhaust), 2. 10-50% more compression ratio and correct squish band, 3. 20-30% transfer ports and correct volumetric ratio between crankcase and cylinder (above the piston), 4. 15-20% from carburettor tunning alone and the rest 10-20% is in the type of fuel and oil ratio you use, type of oil, spark plug heat value, ignition timing and last but not least the specific power band you want the engine to perform at max torque. Like it is said in the video just buy second hand parts and have fun, who knows you may get something!
fantastic video. Education is never wasted. thankyou for contributing
Great video. You can never have enough basic detail. I wish I'd found this many years ago. People can always skip past the bits that they know :) Hate to tell you this, but you know a lot, you express yourself well .. you're a teacher. Keep em coming.
Tinman, The Ironhorse gave you a shout out so here I am. I learned something's after watching your port mapping a Stihl MS461 video. So I subscribed as I just bought a MS460 built in 2009, too much compression for me to check with compression gauge but it's easy to start Thanks for teaching us things, I'm here to learn what I can so thanks for the education and entertainment too.
Hi chuck, I'm so glad you got something out of that video. I plan to do more like it in the future.
Fantastic explanation on porting Tinman. Perfect thank you.
Chucky!!!
Much thanks to Iron horse for putting me onto this channel great information. Have a great day everyone.
Hey thx tinman..good shit..im a little late to the game at 48 but needed to learn how to work on my saws as I've been getting alot of logs bigger than my bandmill can handle..just built my first 660 kit n so far so good..ive found alot of pics of a mastermind ported cylinder n copied or tried n about to give'r a rip..thanks your videos were the ones that made it all come together for me w the wheel n timing..now it makes sense!!😂..have a goodun!!
Never to late to have fun
Best basic explanation I have seen. Not there are not others, but you do an excellent job of explaining the concepts...thanks!
Iornhorse sent me love the vedios . I'm a saw guy to wanted to say hi. Kenny from Texas.
Hey Kenny!!
Thanks for sharing tinman explained in a clear way its a interesting video going to try one of my saws once i have watched all your vids thanks .
Thanks Tinman, just found your channel, best wishes
I am very interested to see your lower transfer work! Well.... all of your port work!
If you go through my build videos theres footage of my porting in there here and there..
Thanks Tinman for this breakdown. Love your work brother 👊
Awesome description of what’s going on, I’ve heard of porting but not clear on what it is till now. Seen a few of your videos, and buckin BR shouted you out too. Excellent work on that Homelite man!
THAT WAS AN AWSOME DESCRIPTION OF TIMING! I UNDERSTAND! THANK YOU
You made it very simple love it Thanks
IRONHORSE SAID YOU WERE A GOOD GUY AND HE WAS RIGHT, NICE VIDEO
Thanks to Ironhorse‘s Recommendation.
Nice Explanation. Greetings from Germany
Great explanation wow i never really studied 2 stroke till now thank you 👍👍
RUclips threw this video in my sidebar. I’m glad they did.
Hey Ben, thanks for taking the time to watch it.
I see a bunch of guys breaking out the die grinder, tearing down saws, spending nights in the garage, while the wife screams," Honey, get out of that garage, and come port this!"
GREAT VIDEO.! Now i understand what porting is all about. Thanks! -Bud
Buckin gave a shout for Iron horse, he then led to you. Thanks for all!!!Boom
That's the same way I got here I love it.
Ya, you are a great teacher Tinman!
unbelievable rundown. you are a godsend. thank you so much.
Heard about you from Ironhorse.....I already subscribed! Thank you for your patience and great detail in explaining! 👍
Very clear explanation. Great video.
Great explanation sir......!!!
That really gave some good insight thanks man
Good explanations. I've been watching a few videos by Ironhorse and it's good to see a saw builder who describes the processes instead of just showing a ported saw hacking into a log or 2.
Hoping that you also do a reed version.
Thanks for watching,
I try to give good info on every video, I'm glad people enjoy that type of content.
I appreciate the video. I'm gonna have to watch again.
Thanks for the very good explanation and demonstration of the function. Now even I got a better understanding haha. Keep up the good videos!
Excellent work 👍
I just rode in on an IRONHORSE...Ironhorse said to check you out...lookin good Tinman, just subscribed 🍺🥨🍺
That was a very good explanation!!! Thanks
ill give a 10 star for that one thank you for your time !!!!!!
Just subscribed. The Ironhorse sent me.
Very good info. Thankyou sir.
Thank you for the awesome teachings my friend!🤙🏾
Super helpful!!!! THX TINMAN
You have a real talent about chainsaws and how you do a utube
COOL VIDIEO!! and to make it more confusing when the exsaust port opens it produses a shock wave that travels into the silencer and a tuned pipe when set up propaly sends it back towards the exsaust port and hits it just as the trancfer ports open and block the new charge from escaping out the exsaust so you are burning more of the charge and predusing a bigger bang!! although i'm no expert and don't have a clue how to set them up but thats basicly what a tuned pipe dose on a 2 stroke.
This helped so much. If I wanted to toy around with this stuff, is it possible to port a cheap 42cc saw? I have one I picked up for super cheap.
Absolutely it is a perfect place to start. I have ported for strokes since I was a kid never really did much with two strokes other than clean up the ports because I didn't understand the timing end and didn't want to change it. But a few months ago I decided to start playing around with these curbside throw away weed eaters they're cheap and they're everywhere for free. Get on eBay or Amazon and buy yourself a timing degree wheel you can pick them up for less than twenty bucks well you're there buy a Dremel with a flex shaft and a set of carbide bits. Also a set of carburetor adjustment tools the 21 spline seems to be the most common and a package of fuel line. Each item here will be under $20 you could add a digital tach and still be under a hundred bucks. Get your engine running to the best it can run. Then put your degree wheel on it and write down your stock timing numbers in a notebook. Check your squish with some solder record that. Remove your base gasket if the engine your working on has one see where that put you record those timing and squish numbers. Make a plan and start carving. Sharpies layout bluing and a flashlight are your new friends. Put it back together see what difference should changes madeobviously most of the time you're going to have to change your fuel settings on that carburetor. Even just a muffler mod will change your fuel setting requirements. Most important don't be scared and have fun good luck my friend!
Awesome explanation of something that's always been a little murky to me 👍
I'm glad it helped
First! Lol. Man this is a great video Tinman. You got some good info and explain it well. Thanks buddy. Have a great weekend and be safe. We'll see ya down the road...
Thank you for your humility and knowledge brother, I appreciate your time, effort and guidance. I have a new 372 xp x torq and was curious to know what tool would you suggest using two add a hole on the muffler? I want it to look clean and most of all function well. I guess some scratches wouldn’t be the end of the world considering it’s a saw muffler but I am super OCD lol. Hopefully not wasting your time and I could just look it up but I value your opinion tinman
This is why when crankcase seals go bad in a 2 stroke they can create performance havoc.
So lets go through the cast of characters in this video, 1 muffler, a wooden bench top, a scrench, and some freely given knowledge, 1 Tinman, no Dorothy, its gold ! good one Mate !
Hi Tinman this comment was for your muffler mods Vid, I guess you cottoned on to that, I got on to you through Ironhorse and BBR, am really enjoying your content, keep it up !
Thanks for sharing tinman!
great video!
New subscriber awesome informational video buddy
Thankyou Steve!! Welcome to the channel.
welcome steve
Thank you!👍👍👍👍👍
Very informative video. How much $$ will one save by doing their own porting and polishing? Are most of the aftermarket cylinders/pistons able to be ported and polished?
Love your information..I can't find any information regarding kickback. Pre ignition when starting your saw.. stihl460,,,660 flywheel and keyway are fixed timing. I'm firing before tdc.. I got 2 saws I can't start..new short blocks on both saws. Any ideas?thank you
The Ironhorse Cavalry has arrived
entry level, that's for me.
Been a mechanic for over 40 yrs. By no means an engineer. 2 strokes have way less moving parts than a valved 4 stroke, but my peabrain has to actually work some to know the different operating principles, and specifics. Have worked on a 2 stroke diesel, they are cool.
Cracking video TM, I just banged together my 260 yesterday but need to find a good timing wheel download.
www.laverdafinland.org/cape/kuvat/DegreeWheel.jpg
Thats the one I'm using, not sure if that link will work.
@@tinmanssaws Didn't work for me, I found another that I think will work.
Damn Tinman’s saws, you got love from THE IRONHORSE. You must be doing something right. If you feel like you have to do another video, I’d like to see one about that degree wheel and how you go through the process of timing. Spoke too soon.... I found it😬
Lol I was jjst about to link that video!!!
Great video bud love the info great jod man!
Great video! Love ironhorses shout out! Hope alls well with ya! Thanks!
Great vid very happy
Good video!
I been seeing some saws that the exhaust is getting hot spots and carbon buildup. My question is can you take a die grinder with a cutoff wheel and place grooves on the skirt to help pull a draft around that side of the skirt to help cool it off?
I'm not sure what you mean by hotspots?
Are you meaning discoloration on the piston??
I'm ordering a top end today. Any suggestions on a brand or suplyer?
If I port a saw will it overheat ? Is the carb adjustment what keeps it from overheating?
Love it! Learning ❤️❤️
Good stuff friend.
I wonder what timings work best on intake and exhaust ? ? ( for you) or does it change with the model of the saws you are working on?
Ironwood, welcome to the channel. Every saw is different so unfortunately its not just a matter of "use these numbers"
Also it really depends on what you want to cut, how long of a bar and how you operate a saw.
I'll be doing more videos on port timing very soon.
@@tinmanssaws Thank you :) ...
I see ( said an old half blind Wood-Man) 90% of the time a run a 32" bar with 90cc class saw (394xp, 066, J-Red 2095 etc)
I will be watching for the new videos.
Thank you for the info :D
Until the next time, take care friend.
Good stuff
Would you explain the resistance to exhaust flow that a muffler provides in relation to the compression stroke and why it affects engine performance. Basically I'm asking why a 2 stroke engine will run with the muffler removed and the same engine will not run when the stock muffler is installed, even if the stock muffler is not clogged. Will port timing influence the amount of muffler restriction required to provide optimal engine performance?
I already know all that. But now i know i don't know it all. You know what i mean? Are you going to touch on rotary valves? That's cool too. Detroit diesel have 2 cycles also, i believe piston ported. I think you need a tripod. Sound is good. Put some air in tire on lawn mower. Oh i just subscribed, i have more to tell you!
Where do you get the timing data? I under cam timing for four stroke diesel and gas.
i had a motorcycle that was a 3 cyl 2 stroke suzuki open port i think right
What would you charge to port a echo cs680 with a pipe. Something similar to what you do to buckins saws
Ironhorse reccomended and your videos pro it. Good job keep it going. (;-)
two strokes are simple but apparently 75% more power than 4 stroke , not as efficient but interesting, i rebuilt 2 stroke diesels for a while that was an interesting few months working at a friends business reconditioning train engines etc. you have a good nature just like Harvey said.
thanks love it