If you’re looking to own a high horsepower weekend street car or even race car, then our Stage 2 Engine Build is exactly what you’re interested in. Our Stage 2 engine build contains Mahle 2618 pistons which have a 1.2mm Nitrided top piston ring to handle high heat and extremely high cylinder pressure commonly seen in high horsepower Direct Injection engines. The patented HV385 supersonic thermal spray process is applied to the top ring for superior bonding, increased durability and increased scuff resistance. In addition, the second ring is also 1.2mm but reversed twist taper faced made of cast iron. The third ring is a standard tension oil control ring. The piston’s wrist pin is of H13 Tool Steel material which is not your standard Premium Chrome Moly nor your 9310 material. These pistons from Mahle have hard anodized ring lands to prevent galling and micro-welding. The GRAFAL skirt coating itself helps reduce drag, scuffing, friction and cylinder bore wear which is something you cannot find on any other manufacturer’s pistons. The phosphate coating that gives off the grey appearance to the pistons provides a lubricant film in the pin bores and ring grooves. This will benefit you when there is a lack of lubrication such as on cold starts. Pistons are modified to reduce LSPI (Low Speed Pre-Ignition).
The 2618 pistons mated with Manley H Tuff rods make the perfect “M&M” combination. These Connecting Rods are manufactured from 4340 forgings. They are also Heat treated, stress relieved, shot peened and 100% individually magnafluxed. The “M&M” combination has been our proven combo to hold great power reliably for over a decade. ACL Tri-Metal Rod bearings are then paired with the H Beam connecting rods which can endure high loads and high revs. Clevite Tri-Metal Main bearings are also used in the Stage 2 package, which also are capable of withstanding very high loads for extended periods of time. Their load rating is more than 2000 psi higher than the Bi-Metal bearings and are compatible with all types of steel crankshafts.
Another great service that we offer is the teardrop-shaped cavity machined into the Crankshaft assembly itself to improve bearing lubrication. In order to get extra oil to the rod bearings, we create a teardrop shaped cavity to the crankshaft’s main oiling holes. On the Stage 2; the crankshaft, crank pulley and sprocket gears are keyed. This is to ensure that timing doesn’t slip, as it tends to happen when making over 500whp using the OEM friction washer approach. We then delete the Balance shaft with our BSD kit. This reduces parasitic drag to the crankshaft freeing up horsepower and also allows your engine to rev more freely. The only side effect to this is slight increase in engine vibration transferred through the chassis. The OEM Main bolts are replaced with ARP2000 Main Studs which are perfectly capable of handling over 1000 WHP.
The OEM Valve Train is upgraded with 85lbs Beehive Valve Springs vs the OEM which only offer 38lbs spring force. This offers better high RPM stability for the Valve Train under high boost and increased camshaft lift. OEM VVT actuator is modified to the pin areas for high RPM stability to prevent cam-timing runaway; meaning the ECU’s request for intake cam timing at high RPM will always be met.
To keep it all together and make sure there is absolutely no head lift, we utilize our Custom Age 625+ 10mm Head Studs. These head studs have an outstanding U.T.S (Ultimate Tensile Strength) of 280,000psi. Compared to the ARP2000s, which only have a U.T.S of 220,000psi. The CA 625+ Head Studs with our new Superseal Service helps you sleep at night knowing your head will never lift under high loads.
For maximum clamping pressure, on all Stage 2 engine builds and up, Speed Perf6rmanc3 O Rings the Cylinder Head to provide a tight seal around the Fire Ring area. O ring means a small groove is cut into the Cylinder Head. This setup is highly recommended when running over 30psi of boost pressure.
Products included in the stage 2 long block package: Rated 700hp+
- Mahle 2618 Pistons
- Manley H-Tuff Rods
- SP63 625+ Custom Age Head Studs
- ARP Main Studs
- ACL Tri-Metal Rod Bearings
- ACL Tri-Metal Main Bearings
- Modified crank w/ Teardrop-shaped cavity
- O ring
- BSD Kit
- Upgraded Heat-treated Intake VVT
- Timing Chain Guides
- 85lbs Beehive Valve Springs w/ 7* Lock Conversion (For higher rev)
- Optional Vertical Gas ports
- NEW SP63 Upgraded Timing Kit (Found here)
Here are the brand new stock replacement items included in the price:
- SP63 Upgraded VVT Actuator
- Timing Chain
- Cam Frictions Washers (2)
- Oil Pickup