Core engine specification:

• 81mm Bore
• 77.4mm Stroke
• 1595cc
• Wiseco forged pistons with tool steel pins and uprated ring package
• IBspec H-beam con-rods with uprated ARP fasteners
• Fully balanced Honda crankshaft
• Manaflux tested and micropolished crank journals
• New Type-R Oil pump
• New type-R Water pump
• New rear main seal
• All new OEM lower and upper block seals & gaskets
• All fasteners on the block NEW OEM Honda
• All new oil jets
• All new Oil jet Pressure control bolts
• New OEM timing belt
• New OEM tensioner
• Custom spec dual valve-springs
• Remachined spring seats
• Aftermarket titanium retainers
• OEM valves and seats re-cut on a Serdi machine for perfect seal!
• resurfaced Cylinder head
• All new valve-guides
• New OEM cam cover
• New OEM thermostat housing & thermostat
• Customised coolant pipe for turbo centre cartridge coolant return
• All new engine covers
• New Distributor ICM & HT Leads 

The built engine was leakdown tested on the stand giving just 1% leakage on each cylinder! This was a promising result.

On any engine build everything has to be measured and quantified, getting equal compression/clearances goes a long way for keeping reliability in the long run. That plus competant dyno-tuning of course!

This engine was combined with a Garrett GT35R turbocharger and air to water charge cooling with a PWR barrell intercooler. It utilised boost-by-gear for traction and produced 392whp @ 16psi boost on Dynapacks. (Approximately 470bhp at the flywheel)

Some old pictures: