Crow Cams Dual Valve Springs - Nissan RB30
Dual Valve Springs - Nissan RB30 — 5833-12
Dual valve springs for RB30 turbo applications. Crow also lists this exact SKU with the 503NA cam; confirm the selected cam’s complete package with BBT.
The 5833 spring sheet specifies 1.335-inch outside diameter, 0.990-inch inside diameter of the outer spring, 0.770-inch inside diameter of the inner spring, no damper, 0.860-inch coil-bind height and a listed rate of 330 lb/in.
Crow’s dual-spring measurements use a +0.100-inch spacer under the inner spring. This describes the measurement setup; the installer must establish the correct assembled spring arrangement.
BBT can help select the matching cam and valvetrain hardware. Measure clearances and follow the component installation instructions.
Crow identifies 5833-12 as dual valve springs for Nissan RB30 turbo applications. This is a performance spring package and should be matched to the exact camshaft profile and measured cylinder-head setup.
Applications and compatibility
This part is listed for the following engine and vehicle applications where the Crow camshaft or valvetrain package calls for this exact part number:
- Holden Commodore VL — RB30E
- Holden Commodore VL — RB30ET
- Nissan Skyline R32 — RB30
- Nissan Skyline R33 — RB30
- Nissan Skyline R34 — RB30
Compatibility is still determined by the complete cylinder-head and camshaft combination; vehicle model alone is not a substitute for checking the required spring, retainer, lock, lifter and rocker setup.
Installation checks
Measure installed height and verify seat/open pressure, coil-bind margin, retainer-to-seal clearance and guide/seal clearance on the actual cylinder heads. Match the spring to the exact cam profile rather than selecting by engine family alone.
Associated Crow camshaft listings on BBT
This component is called up by Crow on applicable camshaft packages including:
- Crow Cams Nissan RB30 NA SOHC
- Crow Cams Nissan RB30 Turbo SOHC - Standard
- Crow Cams Nissan RB30 Turbo SOHC Medium Street Camshaft
- Crow Cams Nissan RB30 Turbo SOHC Mild Performance Camshaft
- Crow Cams Nissan RB30 Turbo SOHC Street/Strip Camshaft
- Crow Cams Nissan RB30 Turbo SOHC — 503TX3
The list above is representative rather than universal. Use the recommendation table on the exact camshaft page or contact BBT with the cam part number before ordering a complete valvetrain package.
Ordering and BBT support
Built by Boost & Tune can help confirm the correct Crow camshaft, springs, retainers, locks, lifters, rockers, timing components and supporting hardware as one compatible package. For modified cylinder heads, non-standard valves or an unknown existing combination, provide the engine specification and measured valvetrain details before ordering.
Product System
- Engine Parts
Vehicle Fitment
- Holden Commodore Vl Rb30E
- Holden Commodore Vl Rb30Et
- Nissan Skyline R32 Rb30
- Nissan Skyline R33 Rb30
- Nissan Skyline R34 Rb30
Confirm chassis, engine, drivetrain and production-year compatibility before ordering.