I've used Joe's deflectors and they are fantastic. The mild steel is just soft enough to easily cut/trim/shape with little effort. I use rivnuts to install. Saw is coming along nicely. Thanks for showing the effects of each modification.
Stainless steel is nice until it needs to be cut or drilled. I learned the expensive way how nice mild steel is to work with, and I haven’t had any issues with rusting out.
you haven't lived until a doc has dug steel frags out of your eye ball....with a sewing needle:) i've never failed to wear eye protection since that day...very cool trick opening that muffler, joe. i never thought to try it. i switched to propane oxy last summer, no more black smoke and it cuts like a dream-way more precise.
Yes. I was thinking the same thing. I understand it is hard to chase backwards sometimes though; already modded his choke rod etc... I'm with you though. Waddaya think Joe??!! His response is getting likes... feed us lil urchins!!
That’s the beauty of these vids it shows proof that lots of little things come together to make one big thing. That’s what can give you that 1/2 sec over your competitors in a race. Excellent stuff
Love the step by step power adding. You should do everything you can do without machining and get your max hp. Then do the machine work to show how much more can be had from machine work
I also like that you are putting these videos out so quickly. It keeps its engaging because I haven’t had time to forget much from the last video and I’m excited to see what you do next. Nice work Joe.
This is great Joe, thanks for taking the time to do it. Would love to see the gain from opening up the exhaust outlet under that deflector, to the same approximate area as the exhaust port. So far seems to be further evidence that a good muffler mod (open can) is worth around 1/2 a HP.
I’m definitely going to get some of those deflectors and those riding goggles are genius. Your definitely not the first on the do that, hell I know I have. Having a chip in the eye is the worst thing ever. Great video as always man tons of great information
This has been an awesome video series Joe!! I have two boys that are very interested in building saws.... And they will love this format and the information you're sharing. Thanks!
From doing tree work all these years I’ve had a couple visits to have my eyes Dremel’d and scooped.. in the winter time ski/riding goggles work great for tree work too.
Very cool. I've always been impressed with change in a saw after a muffler mod. I imagine after that saw breaks in it would pass 5.8 without further mods.
Channels coming along nicely, I am digging it! Goggles and all. I wear a N 95 mask when I’m grinding aluminum dust can cause some really bad health issues one of which is sarcoidosis not good stuff look into it sometime. Nice work, Joe
14:10 A cheap air pressure regulator can really help when full send is not wanted on air hammers. I would put air pressure regulator on a hose or two for different uses.
Guys tell me who really professionally used these saws in production. Can they really compete with Stihl? Or are these saws not reliable, and can only be used in everyday life?
Coming from the auto/cycle side of things I can appreciate the peak numbers you are getting but as your numbers grow the powerband is becoming more peaky by the modifcations you do. Chainsaws do work in a relatively narrow powerband but what are your thoughts?
Really depends on the saw. Normally work saws have a favorable powerband. But as we push the envelope thepowerband does peak a bit higher and harder. I'll have to do some more testing as most of the time the ported version is still making more tq/hp across the entire range. Do you have a specific run/graph in mind? Might be able to do some testing in the wood to see.
Can see at the end that the MM did increase peak power but oddly the graph shows that you lost the high RPM overrev area.. possibly the change of muffler affected the carb tune and a adjustment could be made I'm surprised that easier exhaust flow would do that.
Recently just bought the g372xp and I took the muffler off to just quickly inspect the cylinder and the muffler is totally empty! Are they all like that? Also do they all have a single ring piston? I thought they had a 2 ring?
I'd like to pay you to do this to my g366 muffler. I've already cut a red UNI foam air filter because the oem i think an acorn would fly through it. Let me know what i need to do to send this to you w/$$$. Tim O'Hara
Map really doesn't get hot enough. I mean it does but it will take a pile of it to keep the whole thing hot enough.👍🏻 oxygen acetylene is the easiest way.
Great vid Joe, really digging the incremental testing! I was wondering about an adjustable outlet that you can make quick alterations to area (while bolted to dyno) and do pulls In between to see where you stop making power. That way you can dial in the ideal combined open area for the particular port work.
I've used Joe's deflectors and they are fantastic. The mild steel is just soft enough to easily cut/trim/shape with little effort. I use rivnuts to install. Saw is coming along nicely. Thanks for showing the effects of each modification.
Stainless steel is nice until it needs to be cut or drilled. I learned the expensive way how nice mild steel is to work with, and I haven’t had any issues with rusting out.
Keep showing everything, what some think is boring attention to detail is a big part of the "magic".
you haven't lived until a doc has dug steel frags out of your eye ball....with a sewing needle:) i've never failed to wear eye protection since that day...very cool trick opening that muffler, joe. i never thought to try it. i switched to propane oxy last summer, no more black smoke and it cuts like a dream-way more precise.
I love this video series. It would be interesting to see the loss in power with the stock carb since you opened the muffler all the way up.
Yes. I was thinking the same thing. I understand it is hard to chase backwards sometimes though; already modded his choke rod etc... I'm with you though. Waddaya think Joe??!! His response is getting likes... feed us lil urchins!!
That’s the beauty of these vids it shows proof that lots of little things come together to make one big thing. That’s what can give you that 1/2 sec over your competitors in a race. Excellent stuff
Love the step by step power adding. You should do everything you can do without machining and get your max hp. Then do the machine work to show how much more can be had from machine work
I'm digging the safety goggles.
Really been enjoying this series, thanks for all the work you have put towards it Joe!
I also like that you are putting these videos out so quickly. It keeps its engaging because I haven’t had time to forget much from the last video and I’m excited to see what you do next. Nice work Joe.
Yes.. you must remain distracted.
I am glad you are doing dyno runs for each little mod. It's good to know how much power every little change makes.
I liked that you went over eye safety. Pretty important and easy to forget about when having fun modifying saws and such. Good job 👍
This is great Joe, thanks for taking the time to do it. Would love to see the gain from opening up the exhaust outlet under that deflector, to the same approximate area as the exhaust port. So far seems to be further evidence that a good muffler mod (open can) is worth around 1/2 a HP.
Love this build and the simple how to mods with dyno runs to show gains.
I’m definitely going to get some of those deflectors and those riding goggles are genius. Your definitely not the first on the do that, hell I know I have. Having a chip in the eye is the worst thing ever. Great video as always man tons of great information
I really like this build series and the testing/tuning. Keep it up 👍👍
This has been an awesome video series Joe!! I have two boys that are very interested in building saws.... And they will love this format and the information you're sharing. Thanks!
This is great! This really gives everyone insight on what mods to do for at home power! Good work!
Great video as usual,
I’ve really been enjoying the series.
Have a great weekend sir
Thanks for sharing your pro tips and for showing us how these things are done
From doing tree work all these years I’ve had a couple visits to have my eyes Dremel’d and scooped.. in the winter time ski/riding goggles work great for tree work too.
Don't stop, get it get it!!!!! Coming along nice. 👍🏻
Hello Joe, thank you very much for sharing this step-by-step and how it affects performance. Very instructive. Have a great weekend. Cheers.
Very cool. I've always been impressed with change in a saw after a muffler mod. I imagine after that saw breaks in it would pass 5.8 without further mods.
Channels coming along nicely, I am digging it! Goggles and all. I wear a N 95 mask when I’m grinding aluminum dust can cause some really bad health issues one of which is sarcoidosis not good stuff look into it sometime.
Nice work, Joe
Thank you for the info. I do have some nose filters I will show sometime.
Good idea with the riding goggles. Plus these are more comfy than some other z87 type.
Another great video!! Like the intro too!!
Glad you liked it!! Thank you!
Another awesome episode Joe, love your shop and your tools. Keep up the good work, any chance that a different element might allow more flow?
I like how you use a fire ax and a jackhammer to tune a muffler 😅
14:10 A cheap air pressure regulator can really help when full send is not wanted on air hammers. I would put air pressure regulator on a hose or two for different uses.
Flywheel -ignition timing advance? 😉👍
6:06 I’ve pre-heated on the BBQ and then used a MAPP gas torch. It works great but takes longer than Oxygen/Propane Acetylene. Just an option.
I like this series!
I am learning thank you
Guys tell me who really professionally used these saws in production. Can they really compete with Stihl? Or are these saws not reliable, and can only be used in everyday life?
Coming from the auto/cycle side of things I can appreciate the peak numbers you are getting but as your numbers grow the powerband is becoming more peaky by the modifcations you do. Chainsaws do work in a relatively narrow powerband but what are your thoughts?
Ya he’s lost some races from going over and falling off the power band! If he ever kept one on the peak curve it would be glorious!
Really depends on the saw.
Normally work saws have a favorable powerband. But as we push the envelope thepowerband does peak a bit higher and harder. I'll have to do some more testing as most of the time the ported version is still making more tq/hp across the entire range. Do you have a specific run/graph in mind? Might be able to do some testing in the wood to see.
Hi joe cheers 🍻
Can see at the end that the MM did increase peak power but oddly the graph shows that you lost the high RPM overrev area.. possibly the change of muffler affected the carb tune and a adjustment could be made I'm surprised that easier exhaust flow would do that.
Was in the tune, saw made better power on the rich side of right. Vs the lean side. I have some stickers heading your way
@@dynojoemods2764 oh thanks for letting me know
Love it all....
You should cut some more fitewood. To show what it has gained. I remember what you said about the stihl 170.
Just so happen to be working on a video like that currently.
Cool intro
Thank you!
Any chance you could do a video on port timings and what changes what?
We will be doing some porting on this in the future
Just out of curiosity, could you use self tapping screws to mount the deflectors on?
Not the best idea. The vibration likes to loosen those up
Cool! What size new hole is in the muffler?
I normally use 1/2 - 5/8" hole.
Recently just bought the g372xp and I took the muffler off to just quickly inspect the cylinder and the muffler is totally empty!
Are they all like that?
Also do they all have a single ring piston? I thought they had a 2 ring?
I'd like to pay you to do this to my g366 muffler. I've already cut a red UNI foam air filter because the oem i think an acorn would fly through it. Let me know what i need to do to send this to you w/$$$.
Tim O'Hara
👍🏻👏
Would map gas work that is available to all.
Map really doesn't get hot enough. I mean it does but it will take a pile of it to keep the whole thing hot enough.👍🏻 oxygen acetylene is the easiest way.
Thank you dubbs!
Baguss
Great vid Joe, really digging the incremental testing! I was wondering about an adjustable outlet that you can make quick alterations to area (while bolted to dyno) and do pulls In between to see where you stop making power. That way you can dial in the ideal combined open area for the particular port work.
Great suggestion!
Really enjoying the time & effort you're putting into tkyr videos! 🤌