I am wanting to know the importance of removing and replacing the welch plugs on the 631588 diaphragm carburetor during a rebuild. The engine went through a flood and I did a complete tear down of the entire engine to clean, dry old and fresh lube approximately 1 week after the flood to salvage the engine/minibike. This includes all electrical and a minor carburetor rebuild (not removing the welch plugs, but replacing everything else). The engine ran, but was never 100% and was told that the carburetor needed to be replaced. I was unsure at the time, but kept the carb because I want all original equipment. Due to this fact, I removed the engine and used a new engine for my neighborhood riding needs.
Fast forward 17 years (went to college and stuff), I am ready to put the old engine back on and do a restoration. Do the welch plugs on the 631588 seal off potions in the carb not used or are they remnants of the casting procedure? I am going to do a complete rebuild of the carb again and start over, but I want to know the effects of the welch plugs not being replaced from when I was 14 years old. Lastly, I will be replacing the welch plugs anyway!! Any help would be greatly appreciated.
Fast forward 17 years (went to college and stuff), I am ready to put the old engine back on and do a restoration. Do the welch plugs on the 631588 seal off potions in the carb not used or are they remnants of the casting procedure? I am going to do a complete rebuild of the carb again and start over, but I want to know the effects of the welch plugs not being replaced from when I was 14 years old. Lastly, I will be replacing the welch plugs anyway!! Any help would be greatly appreciated.