CREST CNC Subaru EJ25 Billet Block

CREST CNC has rethought the Subaru EJ block casing. The company looked at the problems the standard block faces in high-power applications and designed this billet block to eliminate them. The piston-to-bore seal is improved, and the block has been designed and tested to support applications up to 1000hp with the right build and supporting modifications.

Each billet block is CNC machined from solid 6061-T6 aerospace-grade aluminium and features:

• Darton ductile sleeves, fully supported to eliminate sleeve drop
• ARP block case bolt kit
• 4-bolt main tunnel system
• 8 block main dowels (compared to 2 on the OEM block)
• Clearanced for stroker applications
• Precision tunnel boring and hone alignment
• Precision deck finishing
• 14mm head stud threads
• 16.5mm dowels