RE: Old Enya 60 muffler bolts?
Thanks Downunder, but I just answered my own question, or at least I have the screws. I have a little drawer of metric screws ranging from M2.5 to M4, and I found two M4x40mm screws that fit perfectly! I don't know the pitch. The funny thing is I had searched this drawer once before and concluded that I had the right body but the wrong pitch. But when I went back to it I couldn't understand what I had gotten wrong, because they screwed into my old muffler perfectly, and not just a short way either, but deep into the holes, and the length was perfect too! This is why my workshop is such a mess...once in awhile saving stuff pays off. I have no idea where those screws came from, but not from any Enya that I know of.
Someone showed up at the field a couple years ago giving away old engines. I got a box full of Enya 60 II parts and cobbled together an engine, but I couldn't find muffler bolts. There were two mufflers and the worst of them I drilled and re-tapped for 6-32 bolts. But when I ran it up on the test stand the exhaust port broke where the holes were for the baffle. In fact, the box had three other crankcases broken the same way, so I guess I was warned. The muffler got destroyed in the process.
That left one muffler and no crankcase. Then a 60 II crankcase turned up on ebay without any baffle holes, it was cheap, and no one else was bidding. So now I needed muffler screws, not wanting to drill and tap again.
After all this, I know it really isn't a very powerful engine, but I like it because of all the effort I put into it. It's in the single digits outdoors right now so a test will have to wait, but I'm eager to see. I took the Perry carb apart and gave it good cleaning. It should be good.
Thanks for the reply. Makes sense that they would use 3mm on the new ones since almost all mufflers seem to use those now.