I'm getting my parts and plans togeather to repower a Chinese buggy with a Arctic Cat 500cc 2 stroke twin.
I have driven this sled on a gravel road and It runs just fine for a sand Buggy. it looks like the engine will have plenty of room to fit. I might be able to reuse the origional expancion chamber but it would look cobbbled togeather if i did and I prefer my buggy not look like afterthought ( even if it its true)
I know the pipe shape and size does influence torque and hp power band ect. I'm sure there is math formulas to build expancion chambers to run the way we want but i don't know where to look? Any Info out there?