Connect with us

Hi, what are you looking for?

Tech

Diamond launches lightest-ever drag racing billet pistons for big-block power-adder engines

Diamond Pistons is announcing what they believe to be the lightest ever billet aluminum pistons with button retainers for big-block power-adder drag race engines.

Produced from 2618 material and designed for use in Pro Mod, Alcohol Dragster, Alcohol Funny Car, and Outlaw 10.5 race engines, these latest innovations reduce reciprocating mass by up to and beyond 40 grams per piston. Changes in the layout of the piston’s struts and webs as well as the introduction of sizable apertures to the pin bosses account for impressive savings of 20 to 30 grams. Further changes that include shortening the piston pins yield another 10 to 15 grams.

Moreover, this efficient arrangement of struts and webs has had a profound effect on the piston’s strength-to-weight ratio. According to Diamond’s senior designer of racing pistons, John Kempf, “Our success or failure depends on correctly processing all the statistics and creating a light, sound structure. The thickness of the ribs and gussets, their locations, how they intersect each other and how they transfer their loads to the main structure, especially around the pin bosses, are critical to gaining a structural advantage.” Significantly stronger than a conventional forging, these new pistons possess the inherent strength to combat poor rod-stroke geometry.

In addition to their lightness and strength they are center balanced. That is, they are balanced about the piston pin centerline, an attribute that is at its most effective during peak revs. Nothing undermines a good tune-up on a big-block at full chat like an out-of-balance piston.

Available with dished, flat top or domed profiles, these pistons are supplied with top or side gas ports (or both) to maintain thorough ring seal. They are also equipped with button retainers for rapid piston changes. End play is limited to 0.020in (0.010in on each button).

Predictably, Diamond completes the kit with Trend’s toughest and hardest piston pins, the new TP1, and Total Seal’s ring packs 1/16, 1/16, 3/16in or 1.5, 1.5, 3mm. Lastly, these pistons are offered in Diamond’s double-coat (hard anodized with moly skirt) or uncoated.

Click to comment

Leave a Reply

Your email address will not be published.

Advertisement
Advertisement
Advertisement
Advertisement

You May Also Like

News

Tony Christian, one of the pioneering drivers of the Pro Street movement, passed away Thursday, June 9. Christian was infamous for his battles with...

News

The Mid-West Drag Racing Series (MWDRS) is saddened over the passing of Pro Mod driver Ronnie Hobbs following an on-track incident during Friday night...

Exclusive

Courtney Enders is no strange to creating compelling drag racing content. As she says, she was a content creator before that was a term,...

The Wes Buck Show

“Stevie Fast” Jackson, current E3 Spark Plugs NHRA Pro Mod points leader, opens up on mid-season rule changes for supercharged and turbocharged entries and...

Since 2005, DI has informed, inspired and educated drag racers from every walk of the racing life - weekend warrior and street/strip enthusiasts to pro-level doorslammer and Top Fuel racers. From award-winning writing and photography to binge-worthy videos to electric live events, DI meets hundreds of thousands of racers where they live, creating the moments that create conversations.