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Kelford camshafts, Nissan TB48DE (2001-2026)
1 273,00 €
Kelford camshafts for the Nissan TB48DE engine. Choose a profile to suit your engine parts and intended use. Profile specifications and required modifications are detailed below.
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Kelford is a New Zealand camshaft manufacturer with roots in Christchurch dating back to 1968. Its profiles range from upgrades for street-driven cars to fully built race engines. Choose the cam around the rest of the engine and its intended use, rather than simply picking the longest duration.
This selection is for the Nissan TB48DE engine. Profile differences, spring recommendations and required modifications are detailed below.
Technical specifications – available profiles for this engine
Profile 223-A
Stage 1 for a near-stock naturally aspirated TB48DE with bolt-on intake and exhaust upgrades. Adds low and mid-range pull with good throttle response, retaining street manners when towing. Retains NVCS/N-VCT variable intake timing. Recommended springs: KVS04.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.25mm cold at the cam | 0.30mm cold at the cam |
| Cam lift | 9.85mm | 9.85mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 9.60mm | 9.55mm |
| Advertised duration @ 0.10mm | 264° | 264° |
| Duration @ 1.00mm valve lift | 225° | 225° |
| Timing IVO @ 1.00mm valve lift | 13.5 ATDC | – |
| Timing IVC @ 1.00mm valve lift | 58.5 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 42.5 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 2.5 ATDC |
| Suggested centre lines | 126° | 110° |
| Valve lift at TDC | 0.12mm | 1.24 mm |
Manufacturer profile information
Profile 223-B
Stage 1.5 for a tuned naturally aspirated TB48DE with bolt-on intake and exhaust upgrades. Adds mid-range and top-end pull while retaining NVCS/N-VCT variable intake timing. Recommended springs: KVS04.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.25mm cold at the cam | 0.30mm cold at the cam |
| Cam lift | 10.05mm | 10.05mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 9.80mm | 9.75mm |
| Advertised duration @ 0.10mm | 272° | 272° |
| Duration @ 1.00mm valve lift | 232° | 232° |
| Timing IVO @ 1.00mm valve lift | 10 ATDC | – |
| Timing IVC @ 1.00mm valve lift | 62 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 44 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 8 ATDC |
| Suggested centre lines | 126° | 108° |
| Valve lift at TDC | 0.28mm | 1.88 mm |
Manufacturer profile information
Profile 223-C
Stage 2 for a tuned naturally aspirated TB48DE, focusing on top-end pull. Retains NVCS/N-VCT variable intake timing. Recommended springs: KVS04.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.25mm cold at the cam | 0.30mm cold at the cam |
| Cam lift | 11.05mm | 11.05mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 10.80mm | 10.75mm |
| Advertised duration | 286° | 286° |
| Duration @ 1.00mm valve lift | 244° | 244° |
| Timing IVO @ 1.00mm valve lift | 4 ATDC | – |
| Timing IVC @ 1.00mm valve lift | 68 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 52 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 12 ATDC |
| Suggested centre lines | 126° | 110° |
| Valve lift at TDC | 0.67mm | 2.26 mm |
Manufacturer profile information
Profile 223-D
Stage 3 for a built naturally aspirated TB48DE drag engine. Recommended supporting changes include a ported head, larger valves, a free-flowing intake and exhaust, and a stroker bottom end with high-compression pistons. Suits ethanol blends or methanol. NVCS/N-VCT can be retained after careful clearance checks. Recommended springs: KVS04.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.25mm cold at the cam | 0.30mm cold at the cam |
| Cam lift | 12.35mm | 12.10mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 12.10mm | 11.80mm |
| Advertised duration @ 0.10mm | 308° | 294° |
| Duration @ 1.00mm valve lift | 264° | 256° |
| Timing IVO @ 1.00mm valve lift | 6 BTDC | – |
| Timing IVC @ 1.00mm valve lift | 78 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 54 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 22 ATDC |
| Suggested centre lines | 126° | 106° |
| Valve lift at TDC | – | 3.65 mm |
Manufacturer profile information
Profile 223-T
Stage 1 for street or off-road use with a turbocharged or supercharged TB48DE. Moderate overlap, good throttle response and more mid-range pull, retaining driveability when towing. Suits a 60–72 mm turbo and retains NVCS/N-VCT variable intake timing. Recommended springs: KVS04.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.25mm cold at the cam | 0.30mm cold at the cam |
| Cam lift | 9.85mm | 9.85mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 9.60mm | 9.55mm |
| Advertised duration @ 0.10mm | 264° | 264° |
| Duration @ 1.00mm valve lift | 225° | 225° |
| Timing IVO @ 1.00mm valve lift | 19.5 ATDC | – |
| Timing IVC @ 1.00mm valve lift | 64.5 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 48.5 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 3.5 BTDC |
| Suggested centre lines | 132° | 116° |
| Cam lift at TDC | – | 1.24 mm |
Manufacturer profile information
Profile 223-T1
Stage 2 turbo profile for a powerful TB48 race engine with a turbo of at least 70 mm. Focused on mid-range and top-end pull. Retains NVCS/N-VCT variable intake timing. Recommended springs: KVS04.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.25mm cold at the cam | 0.30mm cold at the cam |
| Cam lift | 10.65mm | 10.65mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 10.40mm | 10.35mm |
| Advertised duration @ 0.10mm | 278° | 278° |
| Duration @ 1.00mm valve lift | 238° | 238° |
| Timing IVO @ 1.00mm valve lift | 13 ATDC | – |
| Timing IVC @ 1.00mm valve lift | 71 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 54 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 4 ATDC |
| Suggested centre lines | 132° | 115° |
| Valve lift at TDC | 0.15mm | 1.42 mm |
Manufacturer profile information
Profile 223-T2
Stage 3 drag profile for a turbo of at least 88 mm and high boost. For E85 or methanol. Removes NVCS/N-VCT variable intake timing and requires adjustable cam gears.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.25mm cold at the cam | 0.25mm cold at the cam |
| Cam lift | 11.05mm | 11.05mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 10.80mm | 10.80mm |
| Advertised duration @ 0.10mm | 292° | 302° |
| Duration @ 1.00mm valve lift | 252° | 260° |
| Timing IVO @ 1.00mm valve lift | 14 BTDC | – |
| Timing IVC @ 1.00mm valve lift | 58 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 70 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 10 ATDC |
| Suggested centre lines | 112° | 120° |
| Valve lift at TDC | 2.44mm | 1.96 mm |
Manufacturer profile information
Checking heights are shown with the duration figures. Net lift is the net valve movement specified by the manufacturer, while cam lift is listed separately. IVO/IVC denote intake valve opening/closing and EVO/EVC exhaust valve opening/closing. BTDC/ATDC mean before/after top dead centre, and BBDC/ABDC before/after bottom dead centre.
Installation and profile selection
Confirm the exact engine version, valvetrain design and the modifications required by the profile. Check cam timing and valve-to-piston clearance during installation. Springs, lifters and other supporting parts mentioned with a profile are not included unless the profile explicitly states that they come with the kit.
Examples of related vehicle applications
- Nissan Patrol Y61 4.8 TB48DE (2001–2026), depending on market
- Nissan Safari Y61 4.8 TB48DE (2001–2007)
The list covers versions with the specified engines only. Exact fitment and required modifications depend on the selected profile, cylinder head, lifters and timing system.
| Weight | 10 kg |
|---|---|
| Brand |
