Cylinder leakage test

[Terry Drinkwater]

I was fortunate to travel with Johnny Pilcher and his family to a lot of Pro Mod races, including ADRL and many local events. There was a lot of teardown in between rounds at the larger events due to excessive cylinder leakage. In all of our mid-race repairs, the problem seemed to be detonation and/or excessive cylinder temps, which would lock up the top ring.