Cosworth Performance Racing Short Blocks
Cosworth Performance Short Block Features:
- New Cosworth Block
- New Cosworth forged crankshaft
- Cosworth Forged H-beam connecting rods
- Cosworth Forged Pistons and rings
- Cosworth Tri-metal bearings
- Cosworth Heavy Duty mainstuds
- Piston squirt jets
- Balanced to within .5 gram
- Complete blue-print assembly
- Ring gap set
- Bearing clearance checked
- Deck height checked
- Connecting Rod side clearance checked
- Crankshaft end float checked
| High Performance Short Block Assemblies | ||
|---|---|---|
| Subaru | ||
| SB8005 | Subaru STI EJ25 Short Block (2.5L)-Forged Pistons, Rods | |
| SB8007 | Subaru STI EJ25 Short Block(2.5L)-Forged Pistons, Rods W 79mm Billet Crank | |
| Nissan | ||
| 20000067 | Nissan VQ35 Short Block (3.5L) Lo comp 8.8:1 | |
| KK3879 | Nissan VQ35 Short Block (3.5L) Hi comp 11:1 | |
| Mitsubishi | ||
| CI8015 | Mitsubishi Evo VIII/IX 4G63 Short Block (2.0L)-Forged Pistons, Rods | |
| CI8018 | Mitsubishi Evo VII/IX 4G63 Short Block (2.2L)-Forged Pistons, Rods, Billet Crank | |
Cosworth High Performance Engine assemblies are the perfect basis for your high performance application. Each Cosworth Short block has gone through countless hours of engineering and evaluation to determine the best combination of parts and build specification, ensuring maximum reliable performance. Each Cosworth High Performance Engine assembly starts with all new select components as the foundation of the performance build. Every block is thoroughly inspected before the cylinders are honed to perfection. Cosworth then balances the rotating assembly that includes either a new factory forged crankshaft or Cosworth Billet crank along with Cosworth Forged connecting rods, Cosworth Tri-Metal bearings and Cosworth Forged Pistons. The motorsport grade parts are then professionally assembled by expert engine builders in the Cosworth engine assembly facility. Each High Performance Engine Assembly includes a complete specification sheet listing all critical dimensions along with a serialized plaque. For maximum performance, combine with a Cosworth CNC ported Big Valve Cylinder Head and camshaft set.
Cosworth Performance Racing Long Block
Cosworth Racing Long Block Features:
| High Performance Long Block Assemblies | |
|---|---|
| North American spec EJ25 "CS600 & CS600X" | |
| 20000162 | Subaru EJ25 (2.5L) w Big Valve Cylinder heads and KK3766 Camshafts-Billet Crankshaft |
| 20000161 | Subaru EJ25 (2.5L) w Big Valve Cylinder heads and KK3766 Camshafts-STD Crankshaft |
| 20002503 | Subaru EJ25 (2.5L) 2007 w Big Valve Cylinder heads and KK3766 Camshafts-Billet Crankshaft |
| 20002504 | Subaru EJ25 (2.5L) 2007 w Big Valve Cylinder heads and KK3766 Camshafts-STD Crankshaft |
| Includes engine assembly with cylinder heads, camshafts, oil pump and cam covers | |
| European/Asia spec EJ25 "CS600 & CS600X" | |
| 20000160 | Subaru EJ25 (2.5L) w Big Valve Cylinder heads and KK3920 Camshafts-Billet Crankshaft |
| SB8008 | Subaru EJ25 (2.5L) w Big Valve Cylinder heads and KK3920 Camshafts-STD Crankshaft |
| 20002505 | Subaru EJ25 (2.5L) 2007 w Big Valve Cylinder heads and KK3920 Camshafts-Billet Crankshaft |
| 20002506 | Subaru EJ25 (2.5L) 2007 w Big Valve Cylinder heads and KK3920 Camshafts-STD Crankshaft |
| Includes engine assembly with cylinder heads, camshafts, oil pump and cam covers | |
Cosworth Racing Long Block Features:
- New Subaru EJ25 STI Engine case
- New Subaru EJ25 STI Forged Crankshaft
- Optional Billet Cosworth Crankshaft (CS600X)
- Cosworth Forged H-beam Connecting Rods
- Cosworth Forged Pistons and rings
- Cosworth motorsport Tri-metal bearings
- Balanced to within 0.5 gram
- Complete blue-print assembly
- Enlarged Intake and Exhaust ports
- Large diameter stainless steel intake valves
- Large diameter Inconel exhaust valves
- Hi Rev, Dual valve springs
- Titanium Retainers
- Hardened Steel spring platforms.
- Multi angle valve job
- CNC Machined port finish
- Knife edge port divider
- Cosworth S2 High lift camshafts
- Valve lash set
- Cosworth high pressure oil pump
- Cam covers
- Cosworth serial number
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