Doing some work to make a universal 2 stroke leak down tester. This was fun to DIY, really good for bench testing an engine after it's been built.
The original tester I purchased (Not Affiliated) :
http://vintagesmoke.com/product/2-stroke-leak-down-test-kit/
Modified with 1/2 PVC fittings, Radiator hose, and a hose clamp.