Dual Valve Spring Set for Nissan TB42 / TB45 Engines
This dual-spring pack is designed for TB42 and TB45 engines where increased spring force is required for improved valvetrain stability under higher lift or extended RPM ranges. The springs install using the factory retainers, allowing straightforward integration.
Spring Characteristics
Seat Pressure: 95 lbs
Open Pressure: 230 lbs at 10 mm lift
Maximum Valve Lift: 12.5 mm
Suitable for heavy-duty, towing and forced-induction applications where elevated cylinder pressures are present.
More Information
Product Name
Performance Springs Nissan TB42/TB45 Dual Valve Spring Kit
Brands
Performance Springs
Engine
TB42, TB45
Make
Nissan
Delivery & Freight
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Disclaimer:
Product images are for description purposes only. Actual product may vary.
What information do I need to match these pistons to my engine?
You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.
How should ring gaps be set for these pistons?
Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.
Are forged pistons suitable for street engines?
Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.
What is the recommended seat tension for the Nissan TB42/TB45 Dual Valve Spring Kit?
The recommended seat tension for the Nissan TB42/TB45 Dual Valve Spring Kit is 95 lbs. This ensures optimal performance and reliability when installed.
What is the maximum lift capacity of the valve springs in this kit?
The maximum lift capacity of the valve springs in the Nissan TB42/TB45 Dual Valve Spring Kit is 12.5mm. Ensure your camshaft is compatible with this lift to avoid potential valve train issues.
Can I use my stock retainers with this valve spring kit?
Yes, the Nissan TB42/TB45 Dual Valve Spring Kit is designed for simple drop-in installation using your stock retainers, making the upgrade process straightforward.
What is the open pressure at 10mm lift for these valve springs?
The open pressure at 10mm lift for the valve springs in this kit is 230 lbs. This specification is crucial for maintaining valve control at higher RPMs.
Will these valve springs improve engine performance?
Yes, the Nissan TB42/TB45 Dual Valve Spring Kit is engineered to enhance engine performance and durability, making it a suitable upgrade for enthusiasts looking to maximise their engine's capabilities.
