Putting the Squeeze on

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... read more

2015 Mustang upgrade: the trouble with supercharging

By Sam Logan: Adrian Gomez, an industrious 27-year old who manages Mak Performance, a Miami specialty shop established in 1995, bought a 2015 Mustang 5.0 and with fewer than 7,000 miles on the clock installed a Pro Charger centrifugal supercharger. It extended the... read more

Supercharger installation rules from TorqStorm

By Alfie Bilk: Basic forced-induction guidelines (6-10psi boost range) for carbureted systems Forged pistons preferred for all boosted applications Cast or Hypereutectic pistons may be used below 500hp and low boost applications Compression ratios of 9:1 to 9:5.1... read more

Ovality and other guarded racing piston shapes

By Titus Bloom: Gibtec, makers of custom billet competition pistons reveals… Pistons are neither round nor do they have parallel sides. Instead they have a larger diameter towards the bottom, usually between the base of the piston and the piston pin hole, and... read more

Impressive diesel gains: 2.1lb weight-saving per cylinder

Irvine, CA: At CP-Carrillo, two hybrid combinations are in the final stages of testing. One is designated for the common rail 5.9 liter Cummins using a Duramax pin size and compression height with a rod length of 0.856in longer than stock. The other combo is developed... read more

CP-Carrillo: X-style pistons for power-adder engines

Irvine, CA: CP-Carrillo is introducing a new X-Style series of pistons for power-adder engines. Available for Top Alcohol Hemi applications with plus or minus 4.467in bores and Hemi canted valve for Pro Mod with plus-or-minus 5.000in bores, these pistons include... read more

The curse of the round wire lock

By Bertie Scott Brown, January 28, 2015   When a round wire lock, the spring-loaded device that retains the piston pin within the pin towers, comes out while the engine is racing, it releases a fanatical frenzy, a chain of events that most engine builders... read more

Nitrous: the race tuner’s biggest challenge

By Fergus Ogilvy, February 4, 2015 Starting a competition piston company in the second decade of this century could be a bleak proposition. Finding new customers isn’t easy. Engine builders have a stubborn tendency to remain faithful to their existing suppliers,... read more
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