Ever since the release of Dart’s new Iron Eagle 2JZ engine block, we’ve all been rubbing our hands together to see the first build with one hit the dyno (publicly, anyway). Well, Real Street Performance got their hands on one of the new Dart 2JZ blocks and wasted no time assembling it into a killer combination and putting it on the dyno. No burying the lead here; they made over 1,800 horsepower on the combination like it was a walk in the part. Let’s take a look at the combo.
The New Dart 2JZ
The star of the show is Dart’s Iron Eagle 2JZ engine block. This is the first aftermarket iron block of its kind, and as such offers quite a few upgrades from a factory iron block. The blind head bolt holes are available in either the standard 11mm thread or an upgraded 1/2-inch diameter thread. The water jacket is redesigned for improved cooling, and every other facet of the block — deck thickness, cylinder wall thickness, and outer block case — has increased thickness to increase strength and stability under load.
In addition to the new Dart Iron Eagle 2JZ block, Real Street used Brian Crower HD H-beam rods and a lightweight 96mm stroker crank. Both are parts not normally found in a combination running almost 70 pounds of boost.
Where the stock block’s maximum bore is 87mm, the Dart 2JZ block ups that to 88mm. It is also able to accept a longer stroke. For this build, Real Street decided to max out displacement by running the maximum 88mm bore right out of the gate, along with a 96mm stroke lightweight, forged 4340-steel crank from Brian Crower — 2mm longer stroke than you’d normally see in a 2JZ stroker combination. Those specs combine to add another half a liter to the 2JZ’s standard displacement, for 3.503 liters (213.78 ci).
In addition to being a long-stroke crank, it also features Honda-sized rod pins (47.95/1.888-inch) to slow down bearing speed from the standard 2JZ rod journal size (52mm/2.047-inch). Pairing with a set of Brian Crower forged HD H-beam rods and thin-ring 2618 pistons, there were a lot of, “Let’s see if this works” parts used in the short-block, since the components are outside of their normal use case.
The Dart 2JZ block has so much added strength and rigidity, the team decided to run the standard 11mm head studs and a traditional MLS head gasket, where they would normally run a fire-ring setup. That alone could change the whole high-power 2JZ…
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