Finally there is a solution for the performance tuning market, thanks to Crest CNC reinventing the EJ25 and addressing every core weakness that exists regarding Hi-Output Subaru cylinder-head sealing, blow-by, lubrication and longevity.
Testing has shown 100+hp gains from the improved piston/bore seal alone and this block is designed to support up to 1000hp with appropriate supporting equipment.
Billet Block Features:
- Billet 6061-T6 Aerospace Grade Aluminium
- Darton Ductile Sleeves (fully supported to eliminate sleeve drop)
- ARP Case Bolt Kit
- 4 – Bolt Main Tunnel System
- 6 – Block Main Dowels (OEM has 2)
- Clearanced for Stroker Kits
- Precision Tunnel Boring
- Precision Deck Finishing
- 14mm Rolled Head Stud Threads + 16.5mm Dowels (Head Studs NOT included)
- Choice of Raw Finish or Anodised (5 Colours)
The Billet short-block does not include the rotating assembly or any internal components. Crank/Rods/Pistons/Bearings/Gaskets/Head Studs and all engine ancillaries are required.