RE: Looking for Cox .049 mods?
That's the article I was looking for. I'm also looking for mods to the product (plastic backed) engines, and sure starts. Thanks for the help, I don't have anything in particular to put one on, I just wanted to do something with this big can of parts I've collected. I have MANY pistons/cylinders, but they seem pretty worn, due to my lack of knowledge (castor) and lean runs more than 30 years ago!