by Eindecker » Sun Jul 03, 2005 10:01 pm
Previous owner of my HB .15 buggered the first few threads in the muffler mounting (single) bolt hole by using an incorrect (but close) shortlength sae bolt. If I knew the correct metric size, I could retap the first few threads and salvage the situation with a proper longer bolt reaching into the unmolested deeper original threads. Can anyone size the bolt or hole from their engine for me? (if needed, look for a screw pitch gauge in your metric tap & die set) Bolt is MECOA item #25-1231