Lexus UR 11.8:1 Specs

Lexus UR · 3.701" × 3.524" · 11.8:1 engine specs: 303 ci (5L), 8-cylinder, 3.7008" bore x 3.5236" stroke, 11.8:1 compression.

Dimensions

Displacement303 ci / 5 L
Bore3.7008"
Stroke3.5236"
Cylinders8
Compression ratio11.8:1
Bore/stroke ratio1.05

Construction

Block materialaluminum
Head materialaluminum
ValvetrainDOHC
Fuel typegas
Advertised HP389–416 hp

What these numbers mean

Bore/stroke character1.050 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM3,524 ft/min — in the range typical of performance street engines
Displacement per cylinder37.9 ci
Static compression11.8:1 — high enough that pump premium or better is normally required

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Variants sharing these dimensions (2)

These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.

YearAdvertised HPCode
389 hp2UR-FSE
416 hp2UR-GSE

Vehicles (5)

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