Yamaha RD350 · working archive
Keep the legend alive
Practical RD350 guides, workshop knowledge and carefully selected resources.
TORQUE
MEASURE · BUILD · RIDE · REPEAT
From the workshop
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Workshop utilities
Featured tools
FeaturedCarburetor Jetting CalculatorEstimate carburetor main and pilot jet corrections between operating conditions using pressure, temperature, humidity, dry-air density, selectable jet-number models, and actual available jet series.Open tool →
FeaturedCompression Ratio CalculatorCalculate geometric and trapped two-stroke compression ratios, clearance-volume components, exhaust-closing volume, and the chamber volume required for a target ratio.Open tool →
FeaturedCone Layout GeneratorGenerate exact-size flat patterns for cone and reducer sections with dynamic SVG previews, tiled multi-page printing, alignment marks, seam allowance, formulas, and FAQs.Open tool →
FeaturedExpansion Chamber DesignerInteractive two-stroke expansion chamber calculator with engine presets, dynamic SVG dimension and pressure-wave previews, printable dimensions, formula explanations, and FAQs.Open tool →
FeaturedPort Timing CalculatorCalculate two-stroke exhaust and transfer port timing from measured port heights, or solve the port heights required for target durations, with exact slider-crank geometry and live SVG diagrams.Open tool →
FeaturedSquish Clearance CalculatorCalculate nominal and solder-measured two-stroke squish clearance, band taper, uniformity, running-clearance estimate, and the gasket or stack change required for a chosen target.Open tool →