Connecting rod installation instructions

The whole Nitto 4340 connecting rod range is produced from the highest quality double melted forged billet material. Double melted 4340 is a significant feature when compared to other aftermarket offerings which are typically only single melted. The extra melting process removes material impurities, ensuring the 4340 material our rods are made from are of the highest standard. The forging of the billet also ensures a tight and uniform relationship between material grains, enhancing the strength of the one piece forging, unlike the commonly used two piece designs in the lower end of the market.

Our V2 connecting rods are our flagship steel connecting rods. In RB30, 2JZ and Barra applications, they have exceeded 2000hp – a clear display of how stout these connecting rods are. The market was crying out for a steel connecting rod that could withstand these power levels and we delivered.

The V2 differs from the regular I-beam in a multitude of ways. Most noticeably, the I-beam pocket has been revised in order to include more material in key areas. The sides of the beam and the pin end are profiled, not straight cut as seen with our H-beams and I-beams, and, the pin bushes have been upgraded to a CHE bush which is made from their proprietary material.

These features culminate in multiple 6 and 7 second drag builds as well as World Time Attack Challenge winners and Roll Racing dominators.

Features of our connecting rods:

• Grade Tested (X-Ray & Sonic) 4340 Billet Steel ONE Piece Forging
• Quenched and Heat Treated
• Shot Peen Hardness Treated (38HRC)
• Doweled Cap for Superior Alignment
• Quality ARP 2000 Series Bolts
• Optional ARP Custom Age 625 Plus Series Bolts
• CHE pin bushes
• Balanced to Within a +/- 1 Gram Tolerance Per Set
• Bore Diameters to Within +/- 0.0001" Tolerance
• Sunnen Honing Machines Along with Sunnen Diamond Honing Tooling are used for both Big & Pin End Machining and Sizing
• 100% CNC Profiled
• 100% CNC Drilled & Tapped

For custom piston orders, please contact a Nitto sales representative on sales@nitto.com.au or call +61 (02) 8846 5444.

These pistons are made specifically to suit our G16E GTS V2 connecting rods, featuring a 22mm pin. We've produced this combination in order to maximise piston pin boss strength as well as having fast access to pin upgrade options.

Our whole piston range is manufactured by CP Carrillo, based in California, USA. CP Carrillo are a subsidiary of Pankl Racing who are an Austrian automotive components manufacturer that manufacture components for the highest levels of motorsport including Formula 1, Le Mans Prototypes and Moto GP just to name a few. This means that every Nitto piston benefits from world leading technologies and processes that are passed from Pankl onto CP.

Nitto pistons are made to our own specifications in conjunction with CP Carrillo and are cut from CP’s low silicon content 2618 aluminium and Turbo HD forging (where applicable). Additionally, our pistons are accompanied by a PVD coated ring set which deliver the best bore sealing capabilities for boosted applications, eliminating virtually all blow by while reducing the friction against the cylinder wall. As part of the piston kit, CP’s upgraded 9310 material wrist pins are standard across our range. The pins are 100% Rockwell tested, case hardened and cryogenically treated in order to enhance their material grain structure and overall strength.

All Nitto pistons also come standard with additional features such as forced double pin oiling which is essential to keep the wrist pin well lubricated. Anti-detonation grooves are also included. Anti detonation grooves reduce piston to wall contact under high load and also protect the top ring by disrupting the detonation waves. Finally, another feature that is standard across our piston range are the accumulator grooves. Accumulator grooves accumulate residual gasses from combustion which alleviate top ring flutter and premature second ring wear, improving ring seal.

All of these features combine to create the world beating pistons that boast multiple world records across multiple categories in drag racing and circuit racing.