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Kelford camshafts, Subaru EJ20/EJ25, intake AVCS, paddle/tooth-triggeri (2000-2007)
1 262,00 €
Kelford camshafts for the Subaru EJ20/EJ25, intake AVCS, paddle/tooth-triggeri 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/EJ25, intake AVCS, paddle/tooth-triggeri engine. Profile differences, spring recommendations and required modifications are detailed below.
Technical specifications – available profiles for this engine
Profile V2-199-A
A torque-focused profile for a near-standard engine. Suitable for 36 mm restrictor rally classes and a 46–54 mm turbo. Recommended springs: KVS109-STI. The intake cams use a paddle/tooth-style rear trigger, with AVCS on the intake side only.
| Specification | Intake | Exhaust |
|---|---|---|
| Valve clearance | 0.20mm cold at the cam | 0.25mm cold at the cam |
| Cam lift | 9.75mm | 9.75mm |
| Rocker ratio | 1 | 1 |
| Net valve lift | 9.55mm | 9.50mm |
| Advertised duration @ 0.25mm | 256° | 260° |
| Duration @ 1.00mm valve lift | 218° | 222° |
| Timing IVO @ 1.00mm valve lift | 21 ATDC | – |
| Timing IVC @ 1.00mm valve lift | 59 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 44 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 2 BTDC |
| Suggested centre lines | 130° | 113° |
| Valve lift at TDC | – | 0.83 mm |
Manufacturer profile information
Profile V2-199-B
A higher-lift rally and circuit profile for a 54–60 mm turbo, adding mid-range pull while retaining good throttle response. Requires shimless buckets. Recommended springs: KVS1847-BT. Paddle/tooth-style intake cam triggers, intake AVCS only.
| 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 | 15 ATDC | – |
| Timing IVC @ 1.00mm valve lift | 65 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 46 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 0 TDC |
| Suggested centre lines | 130° | 113° |
| Valve lift at TDC | 0.15mm | 0.99 mm |
Manufacturer profile information
Profile V2-199-C
For a built racing engine with a 58–66 mm turbo and E85. High lift requires head machining for lobe clearance and shimless buckets. Recommended springs: KVS1847-BT. Paddle/tooth-style intake cam triggers, intake AVCS only.
| 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 | 12 ATDC | – |
| Timing IVC @ 1.00mm valve lift | 68 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 49 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 3 ATDC |
| Suggested centre lines | 130° | 113° |
| Valve lift at TDC | 0.25mm | 1.29 mm |
Manufacturer profile information
Profile V2-199-D
For high-rpm, full-throttle racing with a 64–72 mm turbo, larger intake manifold and E85. Requires head modification for lobe clearance and shimless buckets. Recommended springs: KVS1847-BT. Paddle/tooth-style intake cam triggers, intake AVCS only.
| 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 | 8 ATDC | – |
| Timing IVC @ 1.00mm valve lift | 72 ABDC | – |
| Timing EVO @ 1.00mm valve lift | – | 54 BBDC |
| Timing EVC @ 1.00mm valve lift | – | 8 ATDC |
| Suggested centre lines | 130° | 113° |
| Valve lift at TDC | 0.47mm | 1.74 mm |
Manufacturer profile information
Profile V2-199-E
For a high-boost, high-rpm drag engine with a ported head, 1 mm oversize valves and a 67 mm or larger turbo. Intended for E85 or methanol. AVCS must be deleted and cam timing fixed. Paddle/tooth-style intake cam triggers. Recommended spring upgrade: 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 STI GDB Version 7–9 EJ207 (2000–2007), JDM paddle/tooth-triggeri
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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