Build Calculators
Two separate tools for your VW & Porsche build — pick the calculator you need.
1Calculator One
Engine Build Calculator
Bore, stroke, head cc & deck height → displacement and static compression ratio.
Open Engine Calculator →
2Calculator Two
Gearbox & Speed Calculator
Gear ratios, final drive & tyre sizes → road speed in mph & km/h per gear.
Open Gearbox Calculator →
3Workshop Tool
Engine Logbook
Log customer engines dropped in, track build progress, extras & upgrades.
Open Engine Logbook ↗