More power? Or Just Noise?

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  • Опубліковано 24 гру 2024

КОМЕНТАРІ • 232

  • @lennywallace540
    @lennywallace540 Рік тому +8

    That much power by only a diff exhaust??? CHEESE AND RICE!!! I very much appreciate what you do for the power saw community brother!!
    PLEASE test a stock can with dual port AND stock can with enlarged factory outlet 🙏🏼🙏🏼🙏🏼

  • @elonmust7470
    @elonmust7470 2 роки тому +21

    Too many guys are obssessed with tuning engines & not chains these days. The biggest performance gain that can be had with bigger saws is how well the chain cuts. And trust me, it takes a lot of messing around & searching to start making magic. But when you do discover that ideal grind for whatever wood you're in, you'll know it. I was lucky to be able to study several old timers who had mastered the square ground chisel bit.

    • @gwp1ohio
      @gwp1ohio 7 місяців тому +1

      When my Dad would file the chain it was like butter

    • @kasynstone733
      @kasynstone733 3 місяці тому

      What’s your recipe?

    • @elonmust7470
      @elonmust7470 3 місяці тому +1

      @@kasynstone733 I like a little bit of an aggressive side plate angle along with a big gullet. I believe the opposite of ehat most think about uncleaned gullets. This grind will shoot the most uniform shavings out of doug fir & sitka spruce. Its like a bunch of tiny woodworkers are plaining 3/16"x1.75" strips with utter precision. The cutting point angles are not terribly acute so the edge can last for days in clean timber. Also this grind will shave any angle you want without being at all grabby or jumpy. The feed rate is slow if you want it to be aka when you're feeling around with the tip, & fast when you give a little pressure. Overall, a chain that excells in production AND not tiring the user. I dont run more than around .030 raker depth. The side plate angle does a better job at making things feed.
      95% of the work put into this grind was from my elders. And it really is voodoo. Literal fractions of a degree out of an angle can make an exponential difference!

  • @andreawhalen4142
    @andreawhalen4142 2 роки тому +34

    i did a copy of iron horses pipe, the 90 degree style and it definitely pulled better and longer but the noise was a bit much after awhile, however with a good set of muffs (supposed to wear em anyway) it was worth it to me because the single biggest advantage was a good one, it got lots of heat out and ran cleaner. The saw now doesn't get anywhere near as hot under load as it did with the stock muffler and that has to be a good thing for longevity. There was less carbon build up as well.

    • @travisweldmaster7815
      @travisweldmaster7815 Рік тому +1

      Basically same here, except anodized aluminum and oval side pipe

    • @StihlRunnin
      @StihlRunnin 7 днів тому

      Yea ur right on the money, I can’t hardly leave the muffler on stuff alone, I either have to mod it and buy a second one for a backup noise compliant pipe or risk getting yelled at.
      If it gets so hot it quits I’m gonna see what I can do, that’s just obvious for me

  • @jamiedalluge9472
    @jamiedalluge9472 2 роки тому +9

    Them ironhorse style seem to work really well

  • @justinhiggins2210
    @justinhiggins2210 2 роки тому +2

    I like your unbiased evaluation of the mufflers. Not hating on one particular brand, and let's face it we all have our favorite and I'm sure you do to but your not trying to rm it down people's throat. A true benefit to you tube.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому

      Thank you.
      I try and keep things neutral. I generally don't have favorites.

  • @lassila3
    @lassila3 2 роки тому +12

    My neighbor used to complain about noise, I should put that trumpet muffler on, that’ll show him :-))

    • @DanRussell-q8s
      @DanRussell-q8s 3 місяці тому

      Many places and towns have specific NOISE ORDINANCES . If you are within those guidelines don't worry about it . But I would find out because the fines can add up if you aren't .

  • @dougsadler5923
    @dougsadler5923 Рік тому +5

    Try putting two of the megaphone style you made together with the big ends,in theory one would think it would work like the expansion chamber... like to see the results

  • @clintdoucette2868
    @clintdoucette2868 2 роки тому +4

    Read my mind lol was making myself a pipe for my 372 today and look what the topic was today! Great videos! Keep them coming!

  • @joesalazar770
    @joesalazar770 2 роки тому +4

    Acàully with a two stroke or deisel. It's not eliminating the muffler that makes the difference. If you ad a expansion chamber like a dirtbikemakes a huge difference. The expansion chamber pulls more air into the cylinder just through natural convection try doing a tuned type pipe and watch the dyno difference u could likely come up with something that people would buy. Just a thought

  • @apuuvah
    @apuuvah 9 місяців тому

    You are the veritable and venerable Saw Doc.

  • @jamesdepalma6341
    @jamesdepalma6341 10 місяців тому +1

    Id like to see a dyno video comparing the typical muffler cover options like the barkbox, striaght shot type but with the factory outlet on the main muffler housing plugged using thin metal in place of the spark screen. Then reinstall the screen and run the dyno again and see what this does to the low end of the saw.

  • @moto_man4344
    @moto_man4344 2 роки тому +10

    You should do a comparison of the west coast bark box and the egan straight shot on the 362,661,462,500i,and 400 just to see what preforms best

    • @itiswhatitis3839
      @itiswhatitis3839 2 роки тому

      The WCS bark box out performs the Egan straight shot everyday of the week

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      The performance on those 2 is very close. I believe both have graphs posted of dyno runs for each product. Pick whichever one you like best.

    • @fabzacres-blackcat
      @fabzacres-blackcat 2 роки тому

      @@itiswhatitis3839 neither one will touch a tuned tube exhaust 😀

    • @itiswhatitis3839
      @itiswhatitis3839 2 роки тому

      @@fabzacres-blackcat of course not it’s totally different measurements and design

    • @fabzacres-blackcat
      @fabzacres-blackcat 2 роки тому +1

      @@itiswhatitis3839 got nothin against either product other than the noise factor. Too loud for me personally

  • @thadstuart8544
    @thadstuart8544 Рік тому +1

    man you must really love your job! it must be nice to do something you really, really enjoy doing everyday

  • @oakiewoodsman
    @oakiewoodsman 4 місяці тому

    Crazy Feller sent me over here to this video. Great video and I appreciate you making it!

  • @victorbergdahl2025
    @victorbergdahl2025 2 роки тому +5

    it would be interesting to see just a straight pipe in different lengths. Love the dyno videos . Victor from Sweden

  • @GotrekGurninsson
    @GotrekGurninsson Рік тому +1

    I like the iron horse style because it adds power and blows the chips away from my face

  • @christilton350
    @christilton350 Рік тому +1

    I’m so appreciative of you doing these I have tried so many different pipes

  • @obbyjep7597
    @obbyjep7597 Рік тому +2

    Neat to see. I've mostly used opened up stock mufflers but might have to try a straight curved pipe, seems like small difference in length makes big change were the saw could make power

  • @rchighfield1
    @rchighfield1 2 роки тому +1

    Man!!! I really appreciate you doing these, kinda wanted to ask but I knew how much work it would take. Thanks for removing the subjective. Best damn video out there on pipes.

  • @bobd6852
    @bobd6852 2 роки тому +2

    Great comparison video. I wish you tested a Rippa dual port muffler. I put one on my saw and it was amazing.

  • @diyjeff1838
    @diyjeff1838 Рік тому

    That's a crazy hp increase. Nice work!!

  • @whatnowstinky
    @whatnowstinky 2 роки тому +2

    thank you for making these video's.
    every video is an education!
    i am sure you already have viewers who are building faster saws because of the knowledge you have shared.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      Thank you for watching.
      Sure hope this can help others build a better saw. That is the goal.

  • @jeremydawkins8399
    @jeremydawkins8399 4 місяці тому +1

    Did you ever do the test of with just modding the muffler? It would be interesting to see how that stacks up against the pipes.

    • @dynojoemods2764
      @dynojoemods2764  4 місяці тому

      I have done a few different tests with mufflers only. A d power output is mostly the same. Some of the pipe style setup can move the powerband up/down. Where most box style mods will give a slight bump over the entire rpm range.

  • @frankz1125
    @frankz1125 2 роки тому +3

    I like the Ironhorse pipe. Cheers

  • @rcracer641
    @rcracer641 Рік тому +1

    I did an expansion chamber and hid it in a regular muffler with enlarged vent on the muffler body.

  • @latinodeathjazz
    @latinodeathjazz 2 роки тому +1

    That puts that debate to bed then 👍🏻 Great content man.

  • @davidwyby
    @davidwyby 2 роки тому +1

    Really would have liked to see Samish Saw Works (Benwa on ope) sq tube twin horn style. He has a vid of it making good power on a stock 50 IIRC.

  • @dominicandashcam6763
    @dominicandashcam6763 Рік тому

    @dynojoemods2764 , you are mentioning testing the "stock" mufflers. can you please also try to play with the volume of the stock ones and run one with a spacer between the housing and the cover? Weld a spacer in there of 1/4" then anther one of 1/4 (=1/2) after the first run and see how they produce ...?

  • @matthewbancroft749
    @matthewbancroft749 2 роки тому +2

    Great work! Looking forward to a dyno review of standard mufflers with various mods.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      Hope to have them all gathered up soon.

    • @matthewbancroft749
      @matthewbancroft749 2 роки тому

      Nice one. No doubt your videos must take a lot of work. Your thoughtful approach is most appreciated.

  • @werewolfpa6628
    @werewolfpa6628 2 роки тому +1

    I would like to see some DIY pipes for A vintage HomeLite xl 12 series saws being a collect done on bone stock saw for the power and torque gains if possible

  • @jeffreyrubish347
    @jeffreyrubish347 2 роки тому +2

    Muffler mods are so effective and easy. Interesting to see what the differences are.

  • @yota4004
    @yota4004 2 роки тому +1

    wish you had tested the stock muffler with a 2nd port added.

  • @TommyUhlman
    @TommyUhlman 2 роки тому +3

    Nice comparison between the different style pipes. Just a thought I wonder if the black 90 degree muffler could be tuned. Longer or shorter on the big pipe after the intersection with the smaller one? Just a thought

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +3

      Yes, they all could be tuned. What works for one engine may not work at all on the others. Might have to try a video showing different setups of the same pipe

  • @rabbithatethefox
    @rabbithatethefox 2 роки тому +1

    thanks for all you do Joe.

  • @williamwhite9321
    @williamwhite9321 2 роки тому +1

    Awesome what about the back pressure panic 👍

  • @Houseworksaws
    @Houseworksaws 2 роки тому +13

    Can I make a muffler for you to send in? If your going to use that 660 I can make any style you need. I love this stuff. Great video as usual Joe!

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +3

      Send me a message/email. I'm sure we can fit it in somewhere.

    • @plowmaster1206
      @plowmaster1206 2 роки тому

      Id like to do the same

  • @KainKustomGarage
    @KainKustomGarage 2 роки тому +2

    Very interesting Joe! Thanks for the comparison!😁

  • @Andyshine77
    @Andyshine77 2 роки тому +15

    Amazing findings! I'm eager to see what an opened up stock can will do, as they're obviously much more practical. The noise, your poor ears! 🤯

    • @IndianaDoug
      @IndianaDoug 2 роки тому +3

      I’m gonna need one of them horns😎

    • @Andyshine77
      @Andyshine77 2 роки тому +5

      @Indiana Doug Be fun to play with wouldn't it. I'm really interested in seeing how the stock cans will, as it's the most practical and easiest.

    • @elijahmerrill9045
      @elijahmerrill9045 Рік тому

      Yeah, surprised he didn't test a dual port otherwise stock muffler.

  • @joesalazar770
    @joesalazar770 2 роки тому +1

    I am interested in the expansion chamber type those always give u the biggest widest gains. Another alternative is to turbo charge it not hard to produce a tiny turbo to go on these would really power torque these little motors up. I'd love to help design something be fun to have a little saw putting out 100 horse power Wich these are capable of look at the junior drag cars check the dyno numbers

  • @joescissorhands141
    @joescissorhands141 2 роки тому

    Subscribed&Liked, I'm OCD Re mufflers-in-2strokes and 660's are my platform (am "a Tree Co" and use my 2511 like 95% of the time on-job, lol, but only experiment w/ my 660's), I'm like a kid on xmas not only getting this video but also that you say you *did* go and do a 'box type comparison' because that was one-of my biggest thoughts the whole video, "Where is the 'usual muff-modded box-type'?", felt odd not having it there so we could see not only that the pipes are better than an EPA-compliant OEM, but seeing a non-EPA-compliant OEM-muff-box would've been cool (though obviously it introduces the Q of "what, specifically, is a 'usual muff mod'?", but I'd say it's fair to simply enlarge that main OEM outlet on clutch-side rear upper of muffler and leave it like 50-75% larger hole than stock-spec, should negate "EPA&noise concerns" because the OEM exit-portage totals well-under 70% of the exhaust-flanging which is the upper limit for muffler-exit so far as I understand it) So eager to see the box-type comparisons, not only to compare to my own but because I just got a new one yesterday that I need to build for my just-finished "felling saw" build (99/81/125 squishing 24.25thou big bore 56mm with no freeport about 1.25mm from-freeport, ported piston / gearing/ignition advancement/etc) and I need something else it is too much pressure in that box/muffler with this build & my current exit ports, I am honestly thinking the best is going to actually be a combination IE a muffler like the 660s where it allows the charge/pulse to "bloom" beautifully and 'cyclone/swirl' back at the flange area, exiting via a port whose location *forces* the exit stream to "pass" the flange, this keeps a "cyclone effect" which is basically all/the best we can hope for with our lil mufflers, I'm betting that if you took the 660 can, seal-up all the outlets on it excepting the 1 largest OEM one, and have a pipe that originates there, instead of bolting to the flange, *that* would be the best because the can effectively becomes the 'expansion chamber' with the attached exit-piping being its "baffle cone/convergence cone and bleeder tube/exit" (ideally it'd be a tube that was like 0.75"sq surface at its entrance from muff and at its exit to atmosphere, but had a bulge in-between, like if the tube were 3" long the first & third inches could be 0.75" tubing and the central would be 1" tubing...obviously it needs to bend, am guessing it's obvious I don't personally weld :P ) So with the greatest respect for this video, I'm curious:
    - do you think the results would've changed, radically, if you (or any of the pipe builders) had done all 3 builds? I ask because the comparison compares 3 forms of pipe-muffler but, to be a good comparison, each type should be "a good representation" of its style...I think pipe #3 has the best "logic" behind it, yet it didn't win, and my immediate thought is "Of course #2/the longest/largest-bodied pipe wins, it's closer to real-piping and our mufflers' weakness is how far from 'real piping' our exhaust systems are!
    - Do you think your megaphone was a bit too large? Perhaps even too quickly-expanding (ie having smaller, more frequent increases in angle to really coax a "smoothly enlarging exhaust-pulse-front")
    Thanks so much for making such awesome content, eager to go check what else you've got posted, will say that I am a bit confused that you seem to say "straight-dump muffs like Egan/Bark Box already have #'s that speak for htemselves", I mean honestly you can game numbers all day and there's simply no logic behind say the Egan plate where it's quite literally creating a >1" exit portal dead center with the exhaust pulse, that is as-if the reality were "no muffler is ideal" but that is not the case, and so many do sadly fall prey to that thinking because un-choking OEM, EPA-influenced mufflers does work so frequently (although so often it DOESN'T work and people falsely believe it does, as I am sure you know there is power to be gained by opening-up a restrictive exit towards "its optimum" but, if you surpass that optimum, performance nose-dives quickly, being 5% past optimum is far worse than being 10%+ below it!

  • @artdombroskie7573
    @artdombroskie7573 2 роки тому +1

    Thank you DJ.

  • @JandSChainsaw
    @JandSChainsaw 2 роки тому +1

    Nice I never would have thought an open pipe would have made more tq I tend to under muffler alot of saws

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +5

      It will be fun testing the box style mufflers see who,what where and why lol

  • @mm88swrt
    @mm88swrt 2 роки тому +1

    Should try the bark box out on the 660 vs stock as well. Seems like that and a simple nipple pipe on the stock cover is the only ones that were missing

    • @itiswhatitis3839
      @itiswhatitis3839 2 роки тому +1

      When you install WCS bark box it improves when you gut the baffle on the inside of stock muffler

  • @paulguptill8845
    @paulguptill8845 2 роки тому +2

    Wish you had a stock muffler modeed added into this test

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому

      I will be doing one with modified can style mufflers

  • @andrewslagle1974
    @andrewslagle1974 2 роки тому +1

    Another great video Joe!

  • @paulhare662
    @paulhare662 Рік тому

    I know nothing but have a Stihl 032 that is my "toy" saw. Looking at a bunch of these interesting pipes, looking at expansion chambers, and looking at my stock muffler, I wonder. OK, stock muffler innards, a length of smallish pipe into a big box, out a small outlet. Expansion chamber, length of pipe into a big chamber and out a small outlet. Could it be that my dead stock muffler is as good as it gets?

  • @OGbqze
    @OGbqze 2 роки тому +2

    Could you try a very small diameter pipe? Like a 1/2"?

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      We will have to see what types of modified covers come in for testing. I want to get the box muffler video all done before any other variations of these header pipes.

  • @leonmeuchael5453
    @leonmeuchael5453 Рік тому

    Does the Singapore mufflers that you're using their work better or is a dual Port like the iron horse with the Rams Horn or the ticket to the bush work the key to the bush work better than them give me the best report

  • @kurtyoung6769
    @kurtyoung6769 2 роки тому +1

    Very good comparison. I wish you would included a stock pipe that's been drilled out. Thanks

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +5

      Stock type mufflers and outlets will get its own video

  • @JohnAllen-lw7xf
    @JohnAllen-lw7xf 2 роки тому +1

    Kinda sounded like the 3rd pipe was 4 stroking a little longer than the other pipes. I’d be curious to know if a carb tune would change the numbers

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      That was just before I caught it with the load. All are tuned within about 500 max rpm.

  • @treebender261
    @treebender261 2 роки тому +1

    My homelite 925 has a rotten muffler and it exits straight down and the smoke boils back up in your face I built one out of 1,1/2 to 2 ,1/4 with forward exit but it was to heavy so I am going to go 1,1/2 to a tomato sauce can then forward exit 1,1/2 I think I will tig it with silicone bronze if I can weld it it should be light weight I guess I'll see if it can be done by the way that comparison was super cool thanks Joe .

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому

      Give it a try a lighter muffler don't sound bad at all

  • @tree-service
    @tree-service 4 місяці тому

    good job.
    interesting to see

  • @gregchapman9284
    @gregchapman9284 2 роки тому +2

    Iv wondered about a gutted stock pipe ( baffles removed) but nice work mate cheers

  • @lagoonrd4173
    @lagoonrd4173 2 роки тому +9

    Stock style mufflers!!! I’ll be looking forward to that episode.... always great content always thumbs up

    • @066logger
      @066logger 2 роки тому +1

      Same here, put the dual port front cover without cage inside on and see what that does for power

  • @sharkb8er
    @sharkb8er 2 роки тому +2

    the difference in decibels would be good to see.

  • @troy3052
    @troy3052 2 роки тому +3

    Thanks for the great content very educational

  • @Woodman_Custom_Sawing
    @Woodman_Custom_Sawing 2 роки тому +1

    Any plans to repeat this test but add a bark box or a straight shot muffler cover? I see a lot of people using these on their saw and they are obnoxiously loud and makes me wonder if they are better than the stub pipe you tested.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому

      I'll be testing some diy front covers and muffler mods. The bark box and straight shots have been tested, 5-10% gains on most models.

    • @Woodman_Custom_Sawing
      @Woodman_Custom_Sawing 2 роки тому +1

      @@dynojoemods2764 I'd like to see the comparison of the straight shot and bark box to the best stub pipe in this video.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому

      @@Woodman_Custom_Sawing
      Similar curves just a bit less power.

  • @andrewscott2866
    @andrewscott2866 2 роки тому +2

    Awesome! Good interpretation of the data👌

  • @tworivertimber6962
    @tworivertimber6962 2 роки тому +1

    Is there anything inside the long tube pipe? Looks like its been split and welded back together.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +2

      Nothing inside, that was just to help form/shape. Pretty sure that pipe has been made to fit a pile of saws over the years

  • @andrewotero1972
    @andrewotero1972 2 роки тому +1

    Great stuff there really shows what goes on on different types of header pipes clears up a lot of mystery that's floating around on the tube keep up the work you're doing an awesome job and I'm hoping you ignore all the haters they just don't got the the skill and talent that you have!!!!!

  • @joshuap7501
    @joshuap7501 2 роки тому +1

    I was told the cs590 stock muffs are difficult to hog out but are basicly a straight shot if you do??? Im sure the 620s are the same muffler

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +2

      Other than some spacers on the support flange the murders are almost identical.
      2 1/4" holes under the large part of the deflector does wonders on those saws. The factory deflector is 2 pieces spot welded together. Remove the bottom half and add the 2 holes into the muffler. Good bump in power and not a huge amount of noise.

    • @joshuap7501
      @joshuap7501 2 роки тому +1

      @@dynojoemods2764 thanks joe i think i watched a vid of yours about it ✌

  • @squealthewheels3090
    @squealthewheels3090 2 роки тому +1

    That was a good one.its looks like were looking at cam dyno sheets.I guess the pipe act's like the cam in two strokes.I like the long pipe 2.I have a sthil ms 261 I wonder if there's any power to be made if I made one?

    • @squealthewheels3090
      @squealthewheels3090 2 роки тому +1

      More labeling on the next one is better for me thanks.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому

      The m tronic on the 261 should be able to keep up with these pipe designs. But if you don't hear it "4stroking " wide open no load it isn't getting enough fuel and will need to tame the pipe down some.

    • @squealthewheels3090
      @squealthewheels3090 2 роки тому

      @@dynojoemods2764 ok.2017 model.now with stock pipe opened tiny bit.runs good.high jet turned all the way up.turn to the right for more fuel?thanks

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      @@squealthewheels3090
      If it has carb screws counter clockwise is more fuel. On the H and L screws

    • @squealthewheels3090
      @squealthewheels3090 2 роки тому

      @@dynojoemods2764 ok thanks

  • @justinweaver8787
    @justinweaver8787 2 роки тому +1

    Great comparison thank u

  • @thesnapperwoodshop
    @thesnapperwoodshop Рік тому +1

    Great video

  • @tomjones4318
    @tomjones4318 2 роки тому +1

    The farmertec 372xp comes with a hollow muffler. Probly all the farmertecs are hollow. Be nice to know what the performance and sound(metered) difference is.

  • @toast47624
    @toast47624 2 роки тому +1

    I too am disappointed your megaphone didn't work. Over the past month I have gone to great effort to build a box muffler with a megaphone inside of it. As yet I have not finished it so I now look forward to seeing how it goes.
    Did pipe 2 have a slight taper to it? It looked like it reduced in area at the exit. That pipe could be refined. I could make some dies for it.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому

      For a megaphone to work, it has a tuned length and diameter to hit just like a real expansion chamber. I missed the mark, but it did provide the best low end. Pipe 2 was a straight wall with the end crimped down some. Mostly from use i think. It was a very old pipe.

    • @toast47624
      @toast47624 2 роки тому +1

      @@dynojoemods2764 The challenge is to build a muffler/pipe that in some way improves performance inside the space a muffler would typically occupy. Pipe 2 has some real potential. I'm formulating my thoughts as to why it worked as well as it did and how it could be improved.
      I have now watched several of your videos and more then ever I think I'll build a dyno. I like your setup. I have drawn up an inertia dyno in Fusion but was never completely sold on the idea so there it has sat for more than a year. I only port for myself and have no intention of doing others as its just not worth the hassle and likewise building a dyno is a lot of effort and cost to test my own experiments but watching you test various set ups makes a good case to get on with it. As time goes on my builds get more and more extreme and I'm not sure my 372 is really a work saw anymore. I'm not sure I'm getting the returns on my effort either for that matter. It doesn't take very much to make a big difference and after that it seems much more difficult to get a great deal more. Re doing the combustion chamber has given me a nice little gain recently but other than that I seem to be going in circles. Port numbers are meaning less to me in favor of transfer shape. I find ex 100 Trans 124-126 intake about 80-85 works for me. My thinking on a bit more intake timing is to give the top end a bit more. I'd be interested to know if you have done any testing on intake timing and if you found that to be true. I think I need a dyno to quantify all of this.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      @@toast47624
      Those port numbers will work well in a 372. The first 20-30% comes easy and it is a struggle for ever few % after that and very easy to go the wrong way. Everyone that is serious about engines should build a dyno. But a dyno takes a lot of time and effort. But it is nice to see the actual number. I offer mail in dyno runs if you want to send something in sometime.

  • @smokedawg9371
    @smokedawg9371 3 місяці тому

    Thank you very much! Great information!

  • @ihcr100
    @ihcr100 2 роки тому +1

    Awesome, well done sir. Thank you. Looking forward to your next video.

  • @Alan_Hans__
    @Alan_Hans__ 2 роки тому +4

    VERY nice thanks Joe. It's nice to see that some of the very simple exhausts actually do make some good power gains. What was your thoughts on the noise levels. They all seemed relatively uniform except for the megaphone but it's impossible to tell on a video.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      They are all very loud. Other than the 90* pipe p3, that one is probably the least noise.

  • @tech-test-break-fix
    @tech-test-break-fix 2 роки тому +2

    Awesome content Joe. The 90deg is already better than stock across the board and looks like it could be great for milling. Could you re-run that one with a few different outlet sizes to see what adjusting back pressure does to the hp torque?

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      It is getting sent back to its builder to try some modifications. We will see what he comes up with.

  • @sddude1348
    @sddude1348 2 роки тому +1

    I'm running a Husqvarna k650 50mm on a motorized bike, do you have a suggestion on w 😚hat would work best? Expansion chamber?

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому

      You may be able to get a chamber to work but the first 10" of a chinadoll muffler header, may work. Or even the 650 box muffler may perform well with some extra holes.
      If the chamber isn't matched to the porting it may perform worse than the box muffler.

  • @IndianaDoug
    @IndianaDoug 2 роки тому +3

    I gotta get me one of them megaphones, the neighbors will love me😎

  • @thomaslindroos1667
    @thomaslindroos1667 2 роки тому +5

    How about no muffler, how much less does that make

    • @Rob-tl9md
      @Rob-tl9md 2 роки тому +1

      it would probably score piston.

    • @thomaslindroos1667
      @thomaslindroos1667 2 роки тому +1

      @@Rob-tl9md what is your reasoning for this? Unless of course there is debris around the port that would magically be sucked in?

    • @Rob-tl9md
      @Rob-tl9md 2 роки тому +1

      @@thomaslindroos1667 Many 2 strokes will score a piston with simply having and exhaust leak at port. I cant imagine with no muffler at all.

    • @thomaslindroos1667
      @thomaslindroos1667 2 роки тому

      @@Rob-tl9md Interesting, I would reckon that a leak creates a leaner combustion, but by adjusting the carb correctly i think it should work.

    • @itiswhatitis3839
      @itiswhatitis3839 2 роки тому

      You would eliminate all back pressure and exhaust savaging the saw wouldn’t last long

  • @fmcmillan08
    @fmcmillan08 2 роки тому +1

    Hey I have a question, is it a good idea to pipe a 455 Rancher with a pipe like the iron horse? Or is it better to just modify the OEM muffler? I have a 455 xtorq that I’d like to put and iron horse pipe on but hadn’t seen anyone do that on the web. Thanks for any info

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому

      Either will work. Seems the pipe style to give a bit better low end

    • @fmcmillan08
      @fmcmillan08 2 роки тому

      Cool man thanks!! Really appreciate the info. I’d like to build the iron horse pipe but wasn’t sure if the xtorq didn’t like that much free flowing exhaust. Definitely gonna try a pipe out. Also really like your channel and all the great info you put out there. You answer a lot of questions us saw guys have floating around in our heads lol. Keep up the good work!!

  • @nathanielw.h.9039
    @nathanielw.h.9039 2 роки тому +1

    great idea for this video.....keep them coming

  • @AselflimitedcapitalisemW0mamon
    @AselflimitedcapitalisemW0mamon 2 роки тому +2

    The color codes help a little.
    But it would be so much more clear - if he always kept the "most powerful" displayed beside it's #s as a thumbnail/picture of each pipe ("or saw": when it's a saw comparison video) to make it constantly clear showing which one produced each different colored line always showing the image of what is being tested - in line with the end of it's corresponding lines. & also after each its own little list of achieved #s.
    Displayed on every chart or graph he ever displays.
    That way it would always be "instantly clear" which one he's speaking of / pointing to / or highlighting.

  • @dalewhitmore143
    @dalewhitmore143 5 місяців тому

    Does a saw need to be broken in first before the muffler mod or is it ok brand new?

  • @Dolmar-Rick
    @Dolmar-Rick 2 роки тому +3

    Great vid, Joe. Very interesting. Can't wait for stock can test, I reckon a stock can with pipe/s will make the most power is my thinking. Large volume to small🤷‍♂️. 👌

  • @dginta7932
    @dginta7932 2 роки тому +1

    Awesome video.

  • @Boost_Addict
    @Boost_Addict 2 роки тому +2

    40:1? what fuel?

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      40:1 e free 90 octane

    • @elonmust7470
      @elonmust7470 2 роки тому

      ​@@dynojoemods2764 You should try 87 octane. Technically speaking, the 87 should make more power.

  • @BlackDevill9
    @BlackDevill9 Рік тому

    Ive got this jonsered cs 2152 but havent seen anything for them, do you make anything for this saw thats would make a deference in power? Or know of one that offers them? Its completely stock
    Thanks 👊

  • @jessebunker6062
    @jessebunker6062 2 роки тому +2

    Because this is a two stroke and not a four stroke, a straight pipe will only make more noise. For it to be of any benefit, it would have to be an expansion chambered exhaust, the same as hot saws and two stroke dirt bikes

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      Straight pipe is no where near what an expansion chamber. But it does appear to be a bit better than a stock box style muffler.
      Next will be to see how well the box style can be modified to make power.

  • @EricaMTB
    @EricaMTB 2 роки тому +1

    Add a whistle intake into the muffler close to the cylinder. It evens out the gas pulsations in the muffler.

  • @SNELLERIZED
    @SNELLERIZED 2 роки тому +2

    Pipes 2 & 3 sounded to be tuned considerably richer than the others. The stock muffler and megaphone were considerably leaner. I would love to see tests showing how much difference the tune makes.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +3

      Actually the stock had the richest tune/least max rpm around 12.4k
      P3 was 12.9k
      P4 was 13k
      P2 13.3
      P1 13.4 all within about 500 max rpm.
      Noise, outlet direction and microphone all mess with it some.

    • @SNELLERIZED
      @SNELLERIZED 2 роки тому +2

      Max RPM for each muffler is not an indicator of the tune. Each muffler will be tuned properly at a different RPM.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +6

      Yes, I agree. That is why the runs posted were averaged off of multiple runs to show the best run at a good "work" tune. It's not practical to show the entire 10-15 min pulls for each pipe to to come up with these runs.

  • @grayclapp1081
    @grayclapp1081 2 роки тому +1

    Did you adjust the carb before each pull on the dyno?

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      Yes, they all had slight adjustments to run/idle/accelerate while keeping a decent 4 stroke.

  • @cisco5400
    @cisco5400 2 роки тому +1

    Very interesting

  • @pm270100
    @pm270100 2 роки тому +4

    nice well done

  • @Srdieselshawn
    @Srdieselshawn 2 роки тому +3

    This is an impressive test. 😉👍🏻 I would want a setup that makes the most decent power increase but keeping the noise down close to stock if possible.
    Likely the tuned expansion pipe is quieter if I remember right while making the best power.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +1

      I do think the expansion chamber was quieter than all of these....

  • @leonmeuchael5453
    @leonmeuchael5453 Рік тому

    Using better for power or is it a du al ported pipe that works better like the key to the bush or the Rams Horn from iron horse better or not or do the ones that you're using better give me the difference in the answers of most on the differences

  • @kraftzion
    @kraftzion 2 роки тому +1

    Love your content!

  • @SixOFord
    @SixOFord 2 роки тому +1

    Enjoyed it. Keep'em coming. 👍

  • @DaveyBlue32
    @DaveyBlue32 2 роки тому +1

    Another great video!!!!

  • @andreiilin
    @andreiilin 2 роки тому +1

    You are the man!

  • @SuperBigdanno
    @SuperBigdanno 2 роки тому +3

    I will be the first to admit that Im completely surprised that any of those made more power. Still for the small gain in power its not worth the noise or lack of spark arrestor

    • @JohnnyButtercuts
      @JohnnyButtercuts Рік тому

      I do agree they’re obnoxiously louder. I cut for 4 hours yesterday and the stock muffler on my 445 was loud enough! It’s more about getting the heat out of the motor. Your stock muffler retains the heat vs when you have a hole for it to escape from.

  • @poparamiro
    @poparamiro 2 роки тому

    Another very interesting video!
    Great work! 🤝🤝🤝

  • @cajun3197
    @cajun3197 2 роки тому +1

    I’m not gonna begin to pretend I understand this. Good video!

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому

      Sometimes more noise is faster...
      All but my mega phone attempt made more power and tq than stock lol

    • @cajun3197
      @cajun3197 2 роки тому +1

      @@dynojoemods2764 lol

  • @jakehughes-mt4fj
    @jakehughes-mt4fj Рік тому

    Holy shit pipe 1 woke that thing up quick

  • @michaelwesten1092
    @michaelwesten1092 2 роки тому +2

    what about double pipe

  • @JKSawShop
    @JKSawShop 2 роки тому +2

    HP is how fast you hit the wall, torque is how far you move the wall after you hit it.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +2

      Can we replace "wall with log? Or do I need a chainsaw powered go kart to test these on too?

    • @JKSawShop
      @JKSawShop 2 роки тому +2

      @@dynojoemods2764 Can we do both…? I got my start with go karts.

    • @dynojoemods2764
      @dynojoemods2764  2 роки тому +2

      @@JKSawShop
      I do have some saw powered (cylinders and carbs) bicycle stuff to introduce once the weather get a bit warmer here in Michigan

    • @JKSawShop
      @JKSawShop 2 роки тому +2

      @@dynojoemods2764 That would be absolutely awesome.

  • @adamklosterman8960
    @adamklosterman8960 2 роки тому

    Have you ever seen the fan showdown by major hardware on UA-cam. I think you should do something like that with chainsaw exhausts. Have people send you in exhausts for a 660 or a 372, something popular, name the pipes and rank them on a chart. Think this would encourage alot of interesting designs, we would learn alot and it would make some good content.