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Cosworth Short Block 79mm Forged Crank 9.2:1 CR

$5,938.00

MODEL # COS2 20007702
Manufacturer Part # 20007702
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If you have taken the mod path beyond the limits of what a stock engine can handle, then it may be time to upgrade to an engine built with an engine block that is a result of countless hours of research and dyno evaluation.

Our superior EJ25 short block contains premium components to sustain large amounts of power and boost. Each short block begins with a brand new Subaru case. The case is thoroughly inspected just before the cylinders are bored out appropriately to receive a set of our incredible Forged Pistons.

From this point, everything is balance in the rotating assembly which includes a new Subaru forged crankshaft along with a set of forged H-beam connecting rods. A set of tri metal race spec bearings are employed to the rods, while one of our skilled engine building experts finishes the assembly.

This particular block will have a 9.2:1 compression ratio.

Here are further details:

•    New Subaru EJ25 STI Engine Case

•    Subaru Forged 79MM Crankshaft

•    Cosworth Forged H-beam Connecting Rods

•    Coswroth Forged Pistons and Rings

•    Cosworth Coated Tri Metal Bearings

•    Balanced within .5 Gram

•    Ring Gaps checked

•    Deck Height checked

•    Connecting rod side clearance checked

•    Crankshaft end float checked

Replacement Components

COS1 10001436, Replacement Piston Kit

COS1 20001515, Single Piston

COS1 20001517, Replacement Rings

COS1 PP5433, Wrist Pin Clip

COS1 PA2674, Wrist Pin

COS2 20015303, Replacement Rod

COS2 20002587, Rod Set


SPECIFICATIONS

Bore Size: 99.5mm
Compression Ratio: 9.2:1
Crank: Forged
Crank Size: 79mm
Displacement: 2.5L
Oil Pump Included: No
Piston Material: Forged
Rods: Forged
Size: Stock
Mfgr. Warranty: No Warranty
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