Break in period
Melting Slicks
Joined: Sep 2021
Posts: 2,555
Likes: 1,213
Lots of posts in the thread with no evidence to back up the assertions.
For best results follow the manufacturer's recommendations. That's always a better starting point than some random goober on the internet with no vested interest in your project.
Race Director
Joined: Oct 2004
Posts: 12,864
Likes: 4,667
It is pretty well documented by many engine builders that they like to heat cycle the springs before running on the dyno. I had my LS7 heat cycled. Spent a half hour one day on an engine stand unit with self contained fuel and cooling systems. I attended the dyno session in person. The builder ran it the day before on the self contained unit to cycle the springs, dyno'd the next day. It may be the reason my dual springs were still in spec after 50,000 miles, but I can't prove that, of course.
