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Reinforced valve spring kits FIAT LANCIA 836A3.000

Reinforced valve spring kit FIAT LANCIA 836A3.000

€583.68 (tax incl.)

€729.60 (tax incl.) -20%

Kit of 16 reinforced valve springs for the Fiat 2.0 16V 836A3.000 four-cylinder.

Brands: CATCAMS
Engine: 836A3.000 (2.0 16V)
Springs: double
Contents: outer springs, inner springs and upper retainers

The 2.0 16V 836A3.000 of Fiat and Lancia cars

The 836A3.000 is the 2.0-litre, 16-valve four-cylinder of the Fiat Coupé 2.0 16V, the Tipo 2.0 16V Sport and the Lancia Dedra and Delta II that share the same block. With four valves per cylinder, it takes 16 sets of springs.

For each valve, the kit supplies an outer spring, an inner spring and an upper retainer. The original spring seats and collets stay in place.

CATCAMS reinforced valve spring kit

Each spring pushes its valve back onto the seat the moment the cam lets go, and keeps it there. As revs rise, the valve, retainer and collets carry more inertia; with a soft spring the valve floats, bounces and ends up touching the piston.

Here, the CATCAMS kit supplies 16 outer springs PAC-E95009, 16 inner springs PAC-I95009 and 16 upper retainers 99519/S, for 353 N at the seat at 35.0 mm and 1099 N at 14.0 mm of lift as published by the manufacturer.

Valve spring kit technical specification

Part number	Brand	Springs	Outer / inner Ø	Seat pressure	Open pressure	Rate	Max lift	Kit contents
99519/S+PAC-E95009+PAC-I95009	CATCAMS	Double	Outer 30.7 mm Inner 23.2 mm	353 N at 35.0 mm	1099 N at 14.0 mm			16 outer springs, 16 inner springs, 16 upper retainers

Valve spring kit fitting details

Part	Fiat original	Reinforced spring kit
Spring		Kit specific: PAC-E95009 (outer) and PAC-I95009 (inner), CATCAMS
Retainer		Kit specific: 99519/S (CATCAMS)
Spring seat		Original kept
Collets		Original kept

The kit contains 16 outer springs PAC-E95009, 16 inner springs PAC-I95009 and 16 upper retainers 99519/S. The original spring seats and collets are kept.

Taken from one retainer to the other with the valve shut, the installed height sets the real force of the spring: every printed load holds true just at the height given alongside. Machining the valve seats lengthens this height and cuts the load, per millimetre, by a number of newtons equal to the spring rate. Recheck all 16 valves after any machining.

	CATCAMS
Installed height	35.0 mm
Seat pressure at this height	353 N

Technical guide

Our brands

Racing camshafts designed and ground on CNC machines in Belgium are shipped worldwide under the CATCAMS name (Cat Cams N.V.). The brand's springs are built to run alongside those camshafts, campaigned in the BTCC and again at the 24 Hours of Le Mans.

How to choose

A beefier spring keeps each valve following the cam while the engine winds up, which opens the door to a livelier camshaft, a lifted rev limit, or forced induction with no valve float. For this kit CATCAMS gives 1099 N at 14.0 mm of lift. As no maximum lift is published, get CATCAMS to validate the lift of whichever camshaft you mean to fit before buying.

Criterion

Key point

Choosing the pressure

A single pressure is on offer: 353 N at the seat at 35.0 mm. To decide whether that is enough, weigh the camshaft profile, the rev range you want and any turbo. A pressure above what you need brings nothing and tires the cams and the tappets. The original springs' own pressure is not disclosed by CATCAMS, which is why no percentage gain appears here. Start from the lowest pressure that holds the valve on the cam.

Single or double spring

On every valve sit two springs, one inside the other: an outer PAC-E95009 and an inner PAC-I95009, below the upper retainer 99519/S. The kit therefore holds no single spring.

When reinforced springs become necessary

Camshaft lifting higher or opening longer
Rev limiter raised during the build
Forced induction fitted to the 2.0
Cylinder head overhauled for racing use
Worn springs, or valve float close to the limiter

Compatible vehicles

Model	Engine code	Power	Years
Fiat Coupé (175_) 2.0 16V	836A3.000	102 kW	1993-1996
Fiat Tipo (160_) 2.0 i.e. 16V Sport (160.EF)	836A3.000	102 kW	1993-1995
Lancia Dedra (835_) 2.0 16V (835ED)	836A3.000	102 kW	1994-1999
Lancia Dedra SW (835_) 2.0 16V (835ED)	836A3.000	102 kW	1994-1999
Lancia Dedra SW (835_) 2.0 Integrale (835ED)	836A3.000	102 kW	1994-1999
Lancia Delta II (836_) 2.0 16V (836AA, 836CA)	836A3.000	102 kW	1993-1999

Important: this kit is reserved for the 836A3.000 engine. The codes 160A8.046 and 836A3.011, from the same family, are not covered: check the engine code before ordering.