Kelford nokka-akselit, Mazda MZR 2.3 DISI L3-VDT (2005-2013)

Kelford camshafts, Mazda MZR 2.3 DISI L3-VDT (2005-2013)

952,00 €

Kelford camshafts for the Mazda MZR 2.3 DISI L3-VDT engine. Choose a profile to suit your engine parts and intended use. Profile specifications and required modifications are detailed below.

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SKU: 247 Category: Camshafts

Description
Additional information

Kelford camshafts, Mazda MZR 2.3 DISI L3-VDT

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 Mazda MZR 2.3 DISI L3-VDT engine. Profile differences, spring recommendations and required modifications are detailed below.

Technical specifications – available profiles for this engine

Profile 247-A

An EZ profile for a 48–54 mm turbo upgrade. Adds low- and mid-range pull with responsive throttle behaviour. Factory springs can be used with the standard rev limit and boost not exceeding 16 psi. KVS17-X springs are recommended for high-mileage engines or higher boost.

Specification	Intake	Exhaust
Valve clearance	0.30mm cold at the cam	0.35mm cold at the cam
Cam lift	9.80mm	9.85mm
Rocker ratio	1	1
Net valve lift	9.50mm	9.50mm
Advertised duration @ 0.10mm	252°	252°
Duration @ 1.00mm valve lift	212°	212°
Timing IVO @ 1.00mm valve lift	18 ATDC	–
Timing IVC @ 1.00mm valve lift	50 ABDC	–
Timing EVO @ 1.00mm valve lift	–	36 BBDC
Timing EVC @ 1.00mm valve lift	–	4 BTDC
Suggested centre lines	124°	110°
Valve lift at TDC	0.06mm	0.62 mm

Manufacturer profile information

Profile 247-B

Stage 2 for approximately 350–500 hp with a 54–60 mm turbo. Adds mid-range pull while retaining street manners. Suitable for E85. Recommended springs: KVS17-X.

Specification	Intake	Exhaust
Valve clearance	0.30mm cold at the cam	0.35mm cold at the cam
Cam lift	10.55mm	10.85mm
Rocker ratio	1	1
Net valve lift	10.25mm	10.50mm
Advertised duration @ 0.10mm	260°	268°
Duration @ 1.00mm valve lift	220°	228°
Timing IVO @ 1.00mm valve lift	18 ATDC	–
Timing IVC @ 1.00mm valve lift	58 ABDC	–
Timing EVO @ 1.00mm valve lift	–	48 BBDC
Timing EVC @ 1.00mm valve lift	–	0 TDC
Suggested centre lines	128°	114°
Valve lift at TDC	0.08mm	0.99 mm

Manufacturer profile information

Profile 247-C

A circuit-racing profile for approximately 500–750 hp and a 58–65 mm turbo. Turbo size refers to compressor inducer diameter. Suitable for E85 and similar ethanol blends. Recommended springs: KVS17-X.

Specification	Intake	Exhaust
Valve clearance	0.30mm cold at the cam	0.35mm cold at the cam
Cam lift	10.85mm	10.90mm
Rocker ratio	1	1
Net valve lift	10.55mm	10.55mm
Advertised duration @ 0.10mm	266°	276°
Duration @ 1.00mm valve lift	228°	236°
Timing IVO @ 1.00mm valve lift	16 ATDC	–
Timing IVC @ 1.00mm valve lift	64 ABDC	–
Timing EVO @ 1.00mm valve lift	–	52 BBDC
Timing EVC @ 1.00mm valve lift	–	4 ATDC
Suggested centre lines	130°	114°
Valve lift at TDC	0.16mm	1.37 mm

Manufacturer profile information

Profile 247-C2

A racing profile for approximately 650–900 hp with a 62–68 mm turbo. Intended for high-rpm, high-boost, full-throttle use on E85 or a similar blend. Recommended spring and retainer kit: KVS17X-T.

Specification	Intake	Exhaust
Valve clearance	0.30mm cold at the cam	0.35mm cold at the cam
Cam lift	11.30mm	11.35mm
Rocker ratio	1	1
Net valve lift	11.00mm	11.00mm
Advertised duration @ 0.10mm	272°	278°
Duration @ 1.00mm cam lift	238°	244°
Timing IVO @ 1.00mm cam lift	7 BTDC	–
Timing IVC @ 1.00mm cam lift	51 ABDC	–
Timing EVO @ 1.00mm cam lift	–	60 BBDC
Timing EVC @ 1.00mm cam lift	–	4 ATDC
Suggested centre lines	112°	118°
Valve lift at TDC	1.74mm	1.34 mm

Manufacturer profile information

Profile 247-D

A drag profile for a built engine making approximately 750–1,000+ hp with a 68 mm or larger turbo. Intended for E85 or methanol. Recommended spring and retainer kit: KVS17X-T.

Specification	Intake	Exhaust
Valve clearance	0.30mm cold at the cam	0.35mm cold at the cam
Cam lift	11.55mm	11.60mm
Rocker ratio	1	1
Net valve lift	11.25mm	11.25mm
Advertised duration @ 0.10mm	282°	292°
Duration @ 1.00mm valve lift	242°	248°
Timing IVO @ 1.00mm valve lift	9 BTDC	–
Timing IVC @ 1.00mm valve lift	53 ABDC	–
Timing EVO @ 1.00mm valve lift	–	62 BBDC
Timing EVC @ 1.00mm valve lift	–	6 ATDC
Suggested centre lines	112°	118°
Valve lift at TDC	1.96mm	1.56 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

Mazda 3 MPS BK/BL 2.3 DISI (2006–2013)
Mazda 6 MPS GG 2.3 DISI (2005–2007)
Mazda CX-7 2.3 DISI Turbo (2006–2012)

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.

Kelford Cams