JZX81

Available to pre order, delivery due in 1st Quarter 2024

2JZ Iron blocks come equipped with significantly improved features such as Siamese cylinder bores, a robust four-bolt steel main cap configuration, and an increased deck thickness — all meticulously engineered to ensure success during high-performance operation. With a comprehensive overhaul of the crank structure and re-imagined coolant passages, there has never been a stronger 2J block available.

Based off the ever so popular OEM Toyota 2JZ engine platform, Dart has taken a proven engine block, and made it even better. Revising the main caps from the 2 bolt cap design, to a 4 bolt cap design on 1-6 caps. Dart has increased the crankcase strength, providing a block that will work in 2000HP+ applications. We did not stop there, we revised and increased the cylinder wall, block deck, and outer case wall thicknesses, to help eliminate any failures under high boost applications.

• Siamese cylinder bores with extra thick walls — 88mm max bore size
• Billet steel 4 bolt main caps 1-6, 12mm/10mm main studs standard
• Extra thick outer block case, for increased strength under high HP levels
• Extra thick decks ensure reliable head gasket seal — .750″ additional deck thickness
• Scalloped water jackets increase flow around cylinders for better cooling
• Machined for screw-in style freeze plugs
• Revised oil passage location, for better flow and clearance with 94mm stroke
• Machined for piston oilers
• Can be machined for clearance for 94mm stroke w/ aluminum rods
• All OE bolt holes for starter, water pump, etc
• Blind head bolt holes available in 11mm standard or 1/2″ upgrade
• Parts kit included

SPECS

• Material: 220 BHN Cast Iron
• Deck Heights: 8.625″
• Mains: 2.5992″
• Cylinder Bores: 86mm (88mm Max)
• Main Bearings: Stock
• Main Caps: Billet Steel 4-bolt 1-6
• Freeze Plugs: Screw-In
• Rear Seal: Stock