Vauxhall Viva HB 1256 Turbo Injection Showcase

Brief compilation of the Turbo injection VM OHV build.

Spec list:
•1256 block
•1256 chevette head
•Mildly ported cylinder head
•8.5:1 compression
•Standard 1256 cam
•Hollow pushrods
•Heavily worked conrods (each rod 50g lighter)
•Conrods balanced end to end to 1.5g variance
•Crankshaft, flywheel, clutch balanced to 1g variance
•Lightened flywheel (from 5.9kg to 4.9 kg)
•High pressure oil pump
•Bespoke stainless inlet manifold
•Bespoke stainless exhaust manifold
•Bespoke stainless full exhaust system
•Oil cooler
•Baffled sump
•Garrett GT1752 Turbo
•45mm Throttle Body
•Electronic Fuel Injection/engine management

78.9 WHP @ 5070 rpm
96 ft•lb @ 2910 rpm
@ 6 psi boost.

Wish to thank all involved on the project. Special mentions to:
Dad
Matt Rowley - Fusion Fabrications
Alex Austin - Torques Fittings
Mark Catchpole, Dennis, Sam - Torque Developments International PLC
Chris, Bruce, Adrian - Gosnays
Guy Higgs - Omex
Fred Dukes - VVOC
Guy, Dangerous - Viva Outlaws
Gerry Johnstone
Auto Silicone Hoses
Opie Oils
TurboZentrum
Autodesk
Axminster
Specialist Components
Crafted Classics
My local auto store