👍 totally true on the stop point, takes several hours to go through a saw and grind everything. Cutting the lowers out and cleaning them can easily take an hour per side.
I agree about the polishing thing. I have a different take on the muffler though. Have you ever noticed that when a gasket goes or you run the saw with loose muffler bolts for a period of time that a you can see a clean track where fresh air sucks back into the Exhaust port and the saw runs lean? My thinking is that once blow down is complete and the piston continues down a brief vacuum occurs. This maybe just after the initial opening of the transfers. It is possible there is some saturation of fresh fuel air just outside the port. So I'm wanting a longer outlet track to contain the gases and separate them from the pure exhaust gases in the muffler box. I would not have cut the folded tube at the mufflers entrance and folded it up as you have. I suspect the engineers who designed it put it there for the same reason. I recently tried a straight pipe on a ported 375XP and no way in hell would it run with it on. I think it was actually sucking all the fresh fuel air out of it. Like you I watch most others porting saws and for the most part we are all kinda doing the same thing. I think a well designed muffler that actually helps the saw is the last frontier of extracting all we can out of these things. I have been cutting the combustion chambers with my CNC mill and designing the perfect shape in CAD with the optimum compression ratio and squish ratio. This has given me a good boost in power over anything I have built previously. I'm now going to build a new muffler with CNC front and back to see how that works out. I'd be interested in some of your thinking about this.
Excellent stuff here! Watch this: ruclips.net/video/hBUjYGf7SeQ/видео.html I like hitting a well placed wall with my exhaust. The length of pipe before it hits the wall makes a difference. I built this one the way I did do to the restrictions of it needing to be within the stock cannister. I didn't want to cut that tube either, but I needed to in order to get the pipe where I wanted it. Dyno Joe ran one of my pipes and it made a saw that already had a typical muffler mod go from 3.8hp to 4.3hp. So...try to make sense out of my video, and use that info to help with your cad program. But...you can't always get the desired length, and much more important is hitting the wall. My pipes are called Hammerhead pipes.look up the video for the Ported ECHO 7310 to see the Hammerhead.
A Putz that acts like a Pro, LMFAO! Good God. Some of the saw porting community truly take themselves seriously. Well, to those of us that have wrenched a lifetime for a living. Yer #2 on my list of favorites. You're Brilliant with R&D's, crushing the Poulan, & Chinese saw Stigmas. I mean, I can go on for quite a spell, & I aint being a shmack ass (as we used to say in the service). Your work is very appreciated! Ya putz 🤣🤣. That's fantastic
I'm pretty sure it was more of a complement than it was a slander...but could have went either way. Would have been better if he had said goofball, but putz...thats kinda serious to me. Ya know? Regardless, I've been playing this little RUclips game in some fashion since around 2012. I have learned that some folks are completely incapable of online communication, and others are just assholes. I don't let it dig at me.
I often forget to say...smooth- yes. Smooth is needed because of trying to avoid build-up. Mirror polish helping flow? For a basic port job? I ain't buying it. Now...like Charles Brisco has ported a saw that was 8.9 hp. You best believe if I did that, I'd be going back in and polishing the shit out of that thing trying to get it up to 9! But that's what I'm saying. Polishing to a brilliant shine should be left for the really impressive stuff, not basic.
I polish the exhaust. I don’t do it for performance but to minimise the carbon build up.
Love the channel 🤘
👍 totally true on the stop point, takes several hours to go through a saw and grind everything. Cutting the lowers out and cleaning them can easily take an hour per side.
Can’t wait to see her in the wood 💪
Love the muffler 👌
I have hours into the two 757s I portedtons of time in lowers an case work
🦅🇺🇸💪😁👍 great video and thank you
I watched them in the wrong order🤦♂️ either way, you definitely knocked it out of the park on this one!
There's still more there. I'm going back in!
Thanks!
Looking good can't wait to see her run
I agree about the polishing thing. I have a different take on the muffler though. Have you ever noticed that when a gasket goes or you run the saw with loose muffler bolts for a period of time that a you can see a clean track where fresh air sucks back into the Exhaust port and the saw runs lean? My thinking is that once blow down is complete and the piston continues down a brief vacuum occurs. This maybe just after the initial opening of the transfers. It is possible there is some saturation of fresh fuel air just outside the port. So I'm wanting a longer outlet track to contain the gases and separate them from the pure exhaust gases in the muffler box. I would not have cut the folded tube at the mufflers entrance and folded it up as you have. I suspect the engineers who designed it put it there for the same reason. I recently tried a straight pipe on a ported 375XP and no way in hell would it run with it on. I think it was actually sucking all the fresh fuel air out of it. Like you I watch most others porting saws and for the most part we are all kinda doing the same thing. I think a well designed muffler that actually helps the saw is the last frontier of extracting all we can out of these things. I have been cutting the combustion chambers with my CNC mill and designing the perfect shape in CAD with the optimum compression ratio and squish ratio. This has given me a good boost in power over anything I have built previously. I'm now going to build a new muffler with CNC front and back to see how that works out. I'd be interested in some of your thinking about this.
Excellent stuff here! Watch this: ruclips.net/video/hBUjYGf7SeQ/видео.html
I like hitting a well placed wall with my exhaust. The length of pipe before it hits the wall makes a difference. I built this one the way I did do to the restrictions of it needing to be within the stock cannister. I didn't want to cut that tube either, but I needed to in order to get the pipe where I wanted it. Dyno Joe ran one of my pipes and it made a saw that already had a typical muffler mod go from 3.8hp to 4.3hp. So...try to make sense out of my video, and use that info to help with your cad program. But...you can't always get the desired length, and much more important is hitting the wall. My pipes are called Hammerhead pipes.look up the video for the Ported ECHO 7310 to see the Hammerhead.
That shindaiwa should run great with the higher compression.
Nice Hellboy Big Guy!
A Putz that acts like a Pro, LMFAO! Good God. Some of the saw porting community truly take themselves seriously. Well, to those of us that have wrenched a lifetime for a living. Yer #2 on my list of favorites. You're Brilliant with R&D's, crushing the Poulan, & Chinese saw Stigmas. I mean, I can go on for quite a spell, & I aint being a shmack ass (as we used to say in the service). Your work is very appreciated! Ya putz 🤣🤣. That's fantastic
I'm pretty sure it was more of a complement than it was a slander...but could have went either way. Would have been better if he had said goofball, but putz...thats kinda serious to me. Ya know? Regardless, I've been playing this little RUclips game in some fashion since around 2012. I have learned that some folks are completely incapable of online communication, and others are just assholes. I don't let it dig at me.
@@novicelumberjackOh I'm sure you're right. I kinda insert my foot sometimes. But yeah, you do a Ton of work that we all appreciate.
Port the 60cc wemars
Nice video. I don't think polish exhaust does shit either. Not enough to make me care.
I often forget to say...smooth- yes. Smooth is needed because of trying to avoid build-up. Mirror polish helping flow? For a basic port job? I ain't buying it. Now...like Charles Brisco has ported a saw that was 8.9 hp. You best believe if I did that, I'd be going back in and polishing the shit out of that thing trying to get it up to 9! But that's what I'm saying. Polishing to a brilliant shine should be left for the really impressive stuff, not basic.
don't be offended by what i say about racing chainsawyers in my banana cut chainsaw video... best not to watch it 😜