Mahle pistons are forged with a fully-machined crown. They come coated with a Grafal anti-friction coating on the skirts, which reduces drag, scuffing, friction and cylinder bore wear.
In order to keep everything spinning smoothly we called upon King Race Bearings. King Race Bearings XP series have many built in features that help with strength and overall bearing performance. Their pMax Black tri-metal structure is built to handle increased load capacity.
With their patented SecureBond micro-etch process that improves multi-layer adhesion and integrity you get a stronger copper intermediate layer and overlay. The unique 90* U-Groove shape helps with load distribution and durability at high RPM’s without any detriment to oil flow and lubrication.
Since we want our rods to spin just as free as our crank we ordered up a set of King Race Bearing con-rod bearings to complement the main bearings.
In order to hold everything together we’re giving our bottom end the ARP treatment with a set of ARP main studs. ARP is the go-to fastener for engine builds across all types of motorsports from drag racing to road racing to marine… You name it and ARP has their hands in it. All ARP studs and bolts are made in-house in the USA. We chose ARP studs over the stock torque to yield bolts because studs are easier on the block threads and the caps and girdle are held in better alignment. Studs also provide more accurate torque readings because they don't twist into the block when being tightened.
Along with ARP main studs we are going to be using ARP head studs to keep our new head married to the block. ARP studs are made of 8740 chromoly steel. 8740 has superior strength over a more common chromoly like 4130 because it has a higher carbon content and responds to heat treatment better. It also makes use of nickel as an alloying element which increases toughness. 8740 has a very high tensile strength of around 200,000 psi. The ARP studs also have several design features like rolled (superior to cut threads due to good grain formation in the thread root) asymmetrical J-form threads with more engagement area on the stressed side and a reduced center diameter to reduce stress risers. ARP studs also have high quality forged nuts and precision ground and hardened washers for accurate torque and positive retention.