The Importance of Compression Ratios and How to Measure Them:
Since race pistons in domestic V-8 engines move up and down in excess of 100 times per second, replacing them is a normal part of a racer’s routine. NHRA Top Fuel and Funny car teams replace them after every race pass and every second qualifying pass. Pro Stock teams
replace them after every 40 passes approximately, and weekend warriors replace them every 12 to 18 months, sooner if their engines are nitrous-assisted. Read the complete story as it appeared in Maximum Drive magazine’s 2015 Sept/Oct issue.