Love that you are doing the clone wars! I have built two parts kits clones a 440 and 372. The 440 was my first one and really taught me a lot and got me into building. For the price and the fun you get, I think they are great! They are so fun to mess with and try out porting and mods without breaking the bank or feeling guilty for screwing something up.
No kidding. These would be pretty fun to play with. Blowing up a $1000+ saw isn't something I can even consider, but a $250 saw I won't be broken hearted about.
Badass dude! I have a g372 thats a turd, even with oem walbro carb... wondering if my porting is the issue... thanks for including the timing numbers.. 🤙
Loving these videos, testing different items to see what actually produces power. My 13 and 14-year-old boys have just gotten into porting, and this is super helpful. Thanks!
Joe run an 8 pin that saw will easily run it. You have machining tools so you have a huge advantage there. I built one with only porting and base gasket delete and it still had a terrible squish clearance I believe it was around 40 tho. I timed several runs between a 7 and 8 pin and the 8 won by a pretty substantial amount.
It should pull an 8 pin sprocket ok. I have a different brand of chinese 372. All i did was a gasket delete, opened up the lower transfer ports but not as high as you went and then took a bit off the bottom of the exhaust port so it was level with the top of the piston at bottom dead center. Did a muffler mod similar to yours and it pulls an 8 pin sprocket with a 24 inch bar no problems at all. I havent touched the timing but have thought about it.
What piston did you swap in to that saw if you don’t mind me asking sir. I love your videos. I wish you could make one every day. I’ll take what I can get though. Lol
Can you show how you check ignition timing on a saw? I’ve always just used a timing wheel to see how much cutting the key advanced it and then just going by feel of how it did….but I’d like to see like actual timing numbers with a light? Like to see where it’s firing? The reason I ask is I have heard these clone 372s are having some poor ignition timing where as in the past these 372s are kinda known for not needing ignition timing advanced. Vs for example a 272 you almost always can get some gains by cutting the key .030 or .020
First video of yours I've watched. You Tube algorithm recommend it. Around 30 years ago, two stroke tuning was much better known by various racers, motorcycle, snowmobile and boat with larger motors making 50~200bhp from 125~750cc motors (and more when cooling available on boat motors running around 80 deg C) Seems the chainsaw guys are the only people doing it nowadays? What is the capacity of the motor? Does it relate to model number ? (eg, 372 is 72cc?)
Ooh ooh, JOE TELL ME MORE ABOUT THE TIMING ADVANCE! how many degrees? Did you cut the key way wider in the correct direction and shove 2 keys in there? Or weld it in and cut a new keyway? My ooold 372xp, hozzlforma, I ported very mildly, piped it with uncle harve pipe out of anodized aluminum pipe, and big bored, pop up, still seems like it's got a lot more to offer
@@dynojoemods2764 i‘m going to lower mine to around 180. Now its a bit much i believe. Whats the Partnumber of that 044 Pistonbolt? I think that could compensate my welded Popup which has 85 Gramms . Thanks Mate
@@dynojoemods2764 Here is a video of 2 61s. The second saw is my good one. Cheers........ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-I57_Ec9RpQE.html
@dynojoemods2764 I'll try it and see how it does. One more question I have a g660 and I'm thinking about trying a big bore kit. Are there any tricks to them?. I've seen a lot about them running like crap and some good.
The counter weight on the crankshaft has to counteract the forces of the up and down weight. In a single cylinder you cannot achieve a perfect balance, but you can balance for a certain rpm range. Where the forces cancel out most of the harmful vibrations. But it is only effective in a short rpm window.
@dynojoemods2764 thank you. I was aware of how a rotating assembly in a V8 for example would need to be balanced, but I couldn't understand how a single cylinder would be affected.
