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Kelford camshafts, Subaru EJ20 Version 5-6, without AVCS (1998-2000)
1 262,00 €
Kelford camshafts for the Subaru EJ20 Version 5–6, without AVCS 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 Subaru EJ20 Version 5–6, without AVCS engine. Profile differences, spring recommendations and required modifications are detailed below.
Technical specifications – available profiles for this engine
Profile 199-B
Torque-focused EJ20 profile for a near-stock engine. Suits rally classes using a 36 mm intake restrictor and a 46–54 mm turbo. Compatible with the original shimmed buckets. Recommended springs: KVS109-STI.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.20mm cold at the cam | 0.25mm cold at the cam |
| Cam lift | 9.55mm | 9.60mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 9.35mm | 9.35mm |
| Advertised duration @ 0.25mm | 256° | 264° |
| Duration @ 1.00mm valve lift | 218° | 222° |
| Timing IVO @ 1.00mm valve lift | 1 ATDC | – |
| Timing IVC @ 1.00mm valve lift | 39 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 43 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 1 BTDC |
| Suggested centre lines | 110° | 112° |
| Valve lift at TDC | 0.91mm | 0.92 mm |
Manufacturer profile information
Profile 199-C
Street, circuit or drag profile adding throttle response and mid-range pull. Recommended turbo size: 54–60 mm. Compatible with the original shimmed buckets. Recommended springs: KVS109-STI.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.20mm cold at the cam | 0.25mm cold at the cam |
| Cam lift | 10.50mm | 10.25mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 10.30mm | 10.00mm |
| Advertised duration @ 0.25mm | 268° | 264° |
| Duration @ 1.00mm valve lift | 226° | 222° |
| Timing IVO @ 1.00mm valve lift | 3 BTDC | – |
| Timing IVC @ 1.00mm valve lift | 43 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 43 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 1 BTDC |
| Suggested centre lines | 110° | 112° |
| Valve lift at TDC | 1.36mm | 0.92 mm |
Manufacturer profile information
Profile 199-E
Versatile race profile for a 58–66 mm turbo, focused on mid-range and top-end pull. Suits a well-built engine running E85. Compatible with the original shimmed buckets. Recommended springs: KVS109-STI-T or KVS1847-BT.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.20mm cold at the cam | 0.25mm cold at the cam |
| Cam lift | 10.80mm | 10.85mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 10.60mm | 10.60mm |
| Advertised duration @ 0.25mm | 274° | 270° |
| Duration @ 1.00mm valve lift | 232° | 228° |
| Timing IVO @ 1.00mm valve lift | 6 BTDC | – |
| Timing IVC @ 1.00mm valve lift | 46 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 47 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 1 ATDC |
| Suggested centre lines | 110° | 113° |
| Valve lift at TDC | 1.68mm | 1.13 mm |
Manufacturer profile information
Profile 199-J
Higher-lift circuit and rally profile focused on throttle response and mid-range pull. Suits a 54–60 mm turbo. Requires shimless buckets. Recommended springs: KVS1847-BT.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.20mm cold at the cam | 0.25mm cold at the cam |
| Cam lift | 10.90mm | 10.45mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 10.70mm | 10.20mm |
| Advertised duration @ 0.10mm | 264° | 260° |
| Duration @ 1.00mm valve lift | 230° | 226° |
| Timing IVO @ 1.00mm valve lift | 5 BTDC | – |
| Timing IVC @ 1.00mm valve lift | 45 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 46 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 0 TDC |
| Suggested centre lines | 110° | 113° |
| Valve lift at TDC | 1.49mm | 0.99 mm |
Manufacturer profile information
Profile 199-K
High-lift race profile for a well-built engine with a 58–66 mm turbo and fuel such as E85. The head must be machined for the larger lobes. Requires shimless buckets. Recommended springs: KVS1847-BT.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.20mm cold at the cam | 0.25mm cold at the cam |
| Cam lift | 11.50mm | 10.75mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 11.30mm | 10.50mm |
| Advertised duration @ 0.10mm | 272° | 268° |
| Duration @ 1.00mm valve lift | 236° | 232° |
| Timing IVO @ 1.00mm valve lift | 8 BTDC | – |
| Timing IVC @ 1.00mm valve lift | 48 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 49 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 3 ATDC |
| Suggested centre lines | 110° | 113° |
| Valve lift at TDC | 1.87mm | 1.29 mm |
Manufacturer profile information
Profile 199-L
Top-end-focused race profile for a 64–72 mm turbo, a larger intake manifold and E85. The head must be machined for the high-lift lobes, and shimless buckets are required. Recommended springs: KVS1847-BT.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.20mm cold at the cam | 0.25mm cold at the cam |
| Cam lift | 11.70mm | 11.25mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 11.50mm | 11.00mm |
| Advertised duration @ 0.10mm | 282° | 278° |
| Duration @ 1.00mm valve lift | 244° | 242° |
| Timing IVO @ 1.00mm valve lift | 12 BTDC | – |
| Timing IVC @ 1.00mm valve lift | 52 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 57 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 5 ATDC |
| Suggested centre lines | 110° | 116° |
| Valve lift at TDC | 2.33mm | 1.42 mm |
Manufacturer profile information
Profile 199-M
Drag profile for high rpm and boost. Intended for a ported head, 1 mm oversize valves and a turbo of at least 67 mm. For E85 or methanol. Recommended springs: KVS1847-BT.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.20mm cold at the cam | 0.25mm cold at the cam |
| Cam lift | 11.20mm | 11.25mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 11.00mm | 11.00mm |
| Advertised duration @ 0.25mm | 292° | 294° |
| Duration @ 1.00mm valve lift | 250° | 252° |
| Timing IVO @ 1.00mm valve lift | 13 BTDC | – |
| Timing IVC @ 1.00mm valve lift | 57 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 64 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 8 ATDC |
| Suggested centre lines | 112° | 118° |
| Valve lift at TDC | 2.42mm | 1.85 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
- Subaru Impreza WRX / WRX STI GC8/GF8 Version 5–6, EJ205/EJ207 (1998–2000)
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 |
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Price range: 1 262,00 € through 1 308,00 €
