94BULLITT
Super OPE Member
I got an old rough looking 029. When I shook it I could hear stuff rattling in the muffler. It had low compression so I thought it had a busted piston. I did not care enough to pull the muffler since it needed a top end. The saw was missing the recoil assembly and spur sprocket.
I tore the saw down and found that muffler was broke and the saw had ingested pieces of the muffler. I rebuilt it with a Cross Performance cylinder and the Cross Performance pop-up piston from H L supply. The Cross cylinder looked really nice. I was concerned about the weight of the pop-up piston. I thought if it weighed more, the weight might offset the bump in compression. My pop-up weighed 10 grams less than the flat top piston that came with the cylinder!
After I got into the saw I realized that the crankcase was busted on it. It was usable but I had bought a parts saw or part of a saw when I bought my 039. Luckily I had a good crank case. It is a late model with flippy caps which I like.
Everything went together without a problem. It started right up. I left it stock, other than the pop-up. The sounded. It had better throttle response than my 039 and 290/390.
I made videos of the tear down and rebuild. Then I did some testing of the muffler mod and some other things. I have videos of all of that as well.
I tore the saw down and found that muffler was broke and the saw had ingested pieces of the muffler. I rebuilt it with a Cross Performance cylinder and the Cross Performance pop-up piston from H L supply. The Cross cylinder looked really nice. I was concerned about the weight of the pop-up piston. I thought if it weighed more, the weight might offset the bump in compression. My pop-up weighed 10 grams less than the flat top piston that came with the cylinder!
After I got into the saw I realized that the crankcase was busted on it. It was usable but I had bought a parts saw or part of a saw when I bought my 039. Luckily I had a good crank case. It is a late model with flippy caps which I like.
Everything went together without a problem. It started right up. I left it stock, other than the pop-up. The sounded. It had better throttle response than my 039 and 290/390.
I made videos of the tear down and rebuild. Then I did some testing of the muffler mod and some other things. I have videos of all of that as well.