I made this a while back from an old spark plug, an airline fitting, a scrap of vacuum line and a cheap toy whistle. Works rather well, considering! By the time it toots you are well on the way! :TU:
Good idea! I use a cork out of a wine bottle. When the cork rockets out of your 455 and goes into orbit, your at TDC
I thought i remember my dad having something like that back in the day it sure does have a specific use