| SKU:
231-A
Kelford Performance Camshafts
Nissan GT-R R35 (VR38)
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Description
Description
Kelford Cams continue to set the standard when it comes to high performance camshafts and valve springs for the GTR engine. Since their release in 2010, Kelford camshafts have powered the majority of race winning and record breaking GTR's worldwide.
Our core value of being 'Better by Design,' has lead to some recent changes to further enhance performance and reliability. The KVS38-BT valve spring set has been engineered specifically to suit the intricacies of the VR38DETT engine.
Catalogue offerings cater for a range of applications, from stock engines to well-built competition monsters. However, 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.
Camshaft Profiles - Click "Specifications" Tab for profile data:
231-A:
- 266/266 Degrees advertised duration, 10.00mm/9.25mm lift.
- Stage 1 EZ-Power cams to suit stock engines. Can use O.E.M. valve springs if boost and RPM limit are kept original.
231-B2:
- 274/274 Degrees advertised duration, 10.60mm/10.55mm lift.
- Stage 2 high lift cams for street and motorsport applications. Superior performance and timing chain system reliability when used with our valve spring set.
231-C:
- 276/276 Degrees advertised duration, 11.00mm/10.97mm lift
- 276/276 Degrees advertised duration, 11.00mm/10.97mm lift. Stage 3 racing cams to suit well built racing engines. Suitable for many types of motorsport applications.
231-D:
- 284/290 Degrees advertised duration, 10.60mm/10.57mm lift.
- Serious race cams to suit drag racing engines using E85 or methanol fuel. The lobe designed to suit high RPM, high boost applications.
231-E:
- 292/306 Degrees advertised duration, 11.00mm/11.00mm lift.
- Ultimate race cams for methanol burning pro drag racing motors, 6 second 2000HP+ type builds.
231-S6:
- 274&266/274 Degrees advertised duration, 10.60mm&10.55mm/10.55mm lift.
- Split lobe design cams, to promote swirl and maximise efficiency. Suits street, track and endurance racing applications.
Technical Specifications
Technical Specifications
231-A
| Engine Make: | Engine Model: | Part Number: | |||||
| NISSAN | VR38 R35 GTR | 231-A | |||||
| Valve Clearance: | Intake: | 0.30mm | Set | COLD | at the | CAM | |
| Exhaust: | 0.33mm | Set | COLD | at the | CAM | ||
| Cam Lift: | Intake: | 10.30mm | Exhaust: | 9.58mm | |||
| Rocker Ratio: | Intake: | 1 | Exhaust: | 1 | |||
| Nett Valve Lift: | Intake: | 10.00mm | Exhaust: | 9.25mm | |||
| Advertised Duration @ | 0.30mm | Intake: | 266 | Exhaust: | 266 | ||
| Duration @ | 1.00mm VALVE LIFT | Intake: | 226 | Exhaust: | 226 | ||
| Timing @ | 1.00mm VALVE LIFT | IVO: | 13 ATDC | EVO: | 48 BBDC | ||
| IVC: | 59 ABDC | EVC: | 2 BTDC | ||||
| Suggested Centre Lines: | Intake: | 126 | Exhaust: | 115 | |||
| VALVE | Lift @ TDC | Intake: | 0.13mm | Exhaust: | 0.78 | ||
231-B2
| Engine Make: | Engine Model: | Part Number: | |||||
| NISSAN | VR38 R35 GTR | 231-B2 | |||||
| Valve Clearance: | Intake: | 0.25mm | Set | COLD | at the | CAM | |
| Exhaust: | 0.30mm | Set | COLD | at the | CAM | ||
| Cam Lift: | Intake: | 10.90mm | Exhaust: | 10.85mm | |||
| Rocker Ratio: | Intake: | 1 | Exhaust: | 1 | |||
| Nett Valve Lift: | Intake: | 10.65mm | Exhaust: | 10.55mm | |||
| Advertised Duration @ | 0.30mm | Intake: | 274 | Exhaust: | 274 | ||
| Duration @ | 1.00mm VALVE LIFT | Intake: | 233 | Exhaust: | 233 | ||
| Timing @ | 1.00mm VALVE LIFT | IVO: | 13.5 ATDC | EVO: | 51.5 BBDC | ||
| IVC: | 66.5 ABDC | EVC: | 1.5 ATDC | ||||
| Suggested Centre Lines: | Intake: | 130 | Exhaust: | 115 | |||
| VALVE | Lift @ TDC | Intake: | 0.21mm | Exhaust: | 1.17 | ||
231-C
| Engine Make: | Engine Model: | Part Number: | |||||
| NISSAN | VR38 R35 GTR | 231-C | |||||
| Valve Clearance: | Intake: | 0.30mm | Set | COLD | at the | CAM | |
| Exhaust: | 0.33mm | Set | COLD | at the | CAM | ||
| Cam Lift: | Intake: | 11.30mm | Exhaust: | 11.30mm | |||
| Rocker Ratio: | Intake: | 1 | Exhaust: | 1 | |||
| Nett Valve Lift: | Intake: | 11.00mm | Exhaust: | 10.97mm | |||
| Advertised Duration @ | 0.30mm | Intake: | 276 | Exhaust: | 276 | ||
| Duration @ | 1.00mm VALVE LIFT | Intake: | 236 | Exhaust: | 236 | ||
| Timing @ | 1.00mm VALVE LIFT | IVO: | 12 ATDC | EVO: | 53 BBDC | ||
| IVC: | 68 ABDC | EVC: | 3 ATDC | ||||
| Suggested Centre Lines: | Intake: | 130 | Exhaust: | 115 | |||
| VALVE | Lift @ TDC | Intake: | 0.23mm | Exhaust: | 1.28 | ||
231-D
| Engine Make: | Engine Model: | Part Number: | |||||
| NISSAN | VR38 R35 GTR | 231-D | |||||
| Valve Clearance: | Intake: | 0.30mm | Set | COLD | at the | CAM | |
| Exhaust: | 0.33mm | Set | COLD | at the | CAM | ||
| Cam Lift: | Intake: | 10.90mm | Exhaust: | 10.90mm | |||
| Rocker Ratio: | Intake: | 1 | Exhaust: | 1 | |||
| Nett Valve Lift: | Intake: | 10.60mm | Exhaust: | 10.57mm | |||
| Advertised Duration @ | 0.30mm | Intake: | 284 | Exhaust: | 290 | ||
| Duration @ | 1.00mm VALVE LIFT | Intake: | 240 | Exhaust: | 244 | ||
| Timing @ | 1.00mm VALVE LIFT | IVO: | 10 ATDC | EVO: | 60 BBDC | ||
| IVC: | 70 ABDC | EVC: | 4 ATDC | ||||
| Suggested Centre Lines: | Intake: | 130 | Exhaust: | 118 | |||
| VALVE | Lift @ TDC | Intake: | 0.38mm | Exhaust: | 1.37 | ||
231-E
| Engine Make: | Engine Model: | Part Number: | |||||
| NISSAN | VR38 R35 GTR | 231-E | |||||
| Valve Clearance: | Intake: | 0.30mm | Set | COLD | at the | CAM | |
| Exhaust: | 0.33mm | Set | COLD | at the | CAM | ||
| Cam Lift: | Intake: | 11.30mm | Exhaust: | 11.33mm | |||
| Rocker Ratio: | Intake: | 1 | Exhaust: | 1 | |||
| Nett Valve Lift: | Intake: | 11.00mm | Exhaust: | 11.00mm | |||
| Advertised Duration @ | 0.30mm | Intake: | 292 | Exhaust: | 306 | ||
| Duration @ | 1.00mm VALVE LIFT | Intake: | 246 | Exhaust: | 260 | ||
| Timing @ | 1.00mm VALVE LIFT | IVO: | 7 ATDC | EVO: | 68 BBDC | ||
| IVC: | 73 ABDC | EVC: | 12 ATDC | ||||
| Suggested Centre Lines: | Intake: | 130 | Exhaust: | 118 | |||
| VALVE | Lift @ TDC | Intake: | 0.51mm | Exhaust: | 2.08 | ||
231-S6
| Engine Make: | Engine Model: | Part Number: | |||||
| NISSAN | VR38 R35 GTR | 231-S6 | |||||
| Valve Clearance: | Intake: | 0.30mm | Set | COLD | at the | CAM | |
| Exhaust: | 0.33mm | Set | COLD | at the | CAM | ||
| Cam Lift: | Intake: | 10.90mm | Exhaust: | 10.88mm | |||
| Rocker Ratio: | Intake: | 1 | Exhaust: | 1 | |||
| Nett Valve Lift: | Intake: | 10.60mm | Exhaust: | 10.55mm | |||
| Advertised Duration @ | 0.30mm | Intake: | 274 | Exhaust: | 274 | ||
| Duration @ | 1.00mm VALVE LIFT | Intake: | 232 | Exhaust: | 232 | ||
| Timing @ | 1.00mm VALVE LIFT | IVO: | 10 ATDC | EVO: | 51 BBDC | ||
| IVC: | 62 ABDC | EVC: | 1 ATDC | ||||
| Suggested Centre Lines: | Intake: | 126 | Exhaust: | 115 | |||
| VALVE | Lift @ TDC | Intake: | 0.38mm | Exhaust: | 1.17 | ||