Kelford Cams - Camshaft Sets - Nissan RB25 NVCS
Variant SKU: 246-A
Kelford Cams - Camshaft Sets - Nissan RB25 NVCS
Details:
Performance Cams for Nissan RB25 NVCS
The Kelford Cams range of camshafts for Nissan RB25 NVCS/VCT engines.
The RB25 NVCS engine is bought out in Nissan's R33 Skyline AKA the "BOAT".
This catalogue range is designed for hydraulic lifter engines, however solid profiles are available on request.
The low lift lobe designs on the A and A2 cams have proved very popular because there is no requirement for head clearancing.
If you can't find your perfect camshaft within our catalogue, designing custom profiles is our specialty! Simply order the custom camshaft and provide us all the details of your build. Confidential development for race teams is also available.
Note:RB camshafts are also fitted with two different kinds of triggers; by default we fit the spline and half moon type, if you need the "yoke shaped" type please let us know when ordering.
Camshaft Profiles & Technical Specifications
(Click on Camshaft Set or + for Technical Specifications)
246-A Camshaft Set:
- 262/262 Degrees advertised duration, 9.30mm/9.30mm lift.
- 262 Degree street performance cams.
- Low duration, low overlap, maximum velocity, for ultimate throttle response.
- No cylinder head clearancing needed.
- OEM spring can be used with 7500rpm and 1bar of boost.
Technical Specifications
Valve Clearance:
| Intake: | Set | at the | |||
| Exhaust: | Set | at the |
| Cam Lift: | Intake: | 9.30mm | Exhaust: | 9.30mm | |
| Rocker Ratio: | Intake: | 1 | Exhaust: | 1 | |
| Nett Valve Lift: | Intake: | 9.30mm | Exhaust: | 9.30mm | |
| Advertised Duration @ | 0.10mm | Intake: | 262 | Exhaust: | 262 |
| Duration @ | 1.00mm VALVE LIFT | Intake: | 222 | Exhaust: | 222 |
| Timing @ | 1.00mm VALVE LIFT | IVO: | EVO: | 45 BBDC | |
| IVC: | EVC: | 3 BTDC | |||
| Suggested Centre Lines: | Intake: | VARI | Exhaust: | 114 | |
| VALVE | Lift @ TDC | Intake: | Exhaust: | 0.81mm |
246-A2 Camshaft Set:
- 262/272 Degrees advertised duration, 9.30mm/9.35mm lift.
- 272 Degree street / strip cams.
- No cylinder head clearancing required.
- OEM spring can be used with 7500rpm and 1bar of boost.
Technical Specifications
Valve Clearance:
| Intake: | Set | at the | |||
| Exhaust: | Set | at the |
| Cam Lift: | Intake: | 9.30mm | Exhaust: | 9.35mm | |
| Rocker Ratio: | Intake: | 1 | Exhaust: | 1 | |
| Nett Valve Lift: | Intake: | 9.30mm | Exhaust: | 9.35mm | |
| Advertised Duration @ | 0.10mm | Intake: | 262 | Exhaust: | 272 |
| Duration @ | 1.00mm VALVE LIFT | Intake: | 222 | Exhaust: | 226 |
| Timing @ | 1.00mm VALVE LIFT | IVO: | EVO: | 47 BBDC | |
| IVC: | EVC: | 1 BTDC | |||
| Suggested Centre Lines: | Intake: | VARI | Exhaust: | 114 | |
| VALVE | Lift @ TDC | Intake: | Exhaust: | 0.85mm |
246-B Camshaft Set:
- 262/272 Degrees advertised duration, 10.00mm/10.00mm lift.
- RB 25 NVCS 272 Degree High lift Race profiles for high performance race builds.
- Machining is needed for cam swing.
- Must use KVS25R spring.
Technical Specifications
Valve Clearance:
| Intake: | Set | at the | |||
| Exhaust: | Set | at the |
| Cam Lift: | Intake: | 10.00mm | Exhaust: | 10.00mm | |
| Rocker Ratio: | Intake: | 1 | Exhaust: | 1 | |
| Nett Valve Lift: | Intake: | 10.00mm | Exhaust: | 10.00mm | |
| Advertised Duration @ | 0.10mm | Intake: | 264 | Exhaust: | 272 |
| Duration @ | 1.00mm VALVE LIFT | Intake: | 224 | Exhaust: | 232 |
| Timing @ | 1.00mm VALVE LIFT | IVO: | EVO: | 51 BBDC | |
| IVC: | EVC: | 1 BTDC | |||
| Suggested Centre Lines: | Intake: | VARI | Exhaust: | 116 | |
| VALVE | Lift @ TDC | Intake: | Exhaust: |