The ZEROSPORT Camshaft Set is a high-performance profile designed specifically for the Nissan TB48 (4.8L DOHC Inline-6) engine, commonly found in the Y61 Nissan Patrol.
Technical Specifications
Part Number: ZEROSPORT 4038
Engine Compatibility: Nissan TB48DE DOHC 24-Valve
Application: Intake & Exhaust (IN/EX) set
Advertised Duration: 268 Degrees
Valve Lift: 10.15mm
Performance Breakdown
Power Band: A 268° duration is traditionally categorized as a Stage 2 performance profile. It targets improved low-to-midrange torque and horsepower while preserving street drivability, making it popular for both street driving and off-road dune setups.
Lift Capabilities: The 10.15mm valve lift significantly improves air-flow volume compared to standard stock lift, maximizing efficiency without requiring radical head modifications.
NVCS Compatibility: Depending on the setup, Stage 2 cams are usually optimized to retain Nissan’s NVCS (variable intake cam timing) for optimal bottom-end throttle response.
Critical Installation Requirements
Performance camshafts alter the operational dynamics of your valvetrain. Ensure you take the following precautions during installation:
Upgraded Valve Springs: Given the 10.15mm lift, verifying maximum coil bind clearance is critical. Upgraded performance valve springs are highly recommended to prevent valve float at high RPMs.
Clearance Checks: You or your mechanic must manually verify the inlet-to-exhaust valve clearance and valve-to-piston clearance during the mock-up phase, as the high-lift lobes change these tolerances completely.
Dialing In: ZEROSPORT profiles are engineered to be professionally degree'd and dialed in by a qualified engine builder to achieve the precise timing card specifications.