On order

Reinforced valve spring kit PSA ET3J4

€368.64 (tax incl.)

€460.80 (tax incl.) -20%

Kit of 16 reinforced valve springs for the PSA 1.4 16V ET3J4 four-cylinder.

Brands: CATCAMS
Engine: ET3J4 (1.4 16V)
Springs: single
Contents: springs and upper retainers

The 1.4 16V ET3J4 of Peugeot and Citroën cars

The ET3J4 is the 1.4-litre, sixteen-valve four-cylinder that PSA fitted to the Citroën C2, C3 and C4 as well as the Peugeot 206, 207, 307 and 1007. With four valves per cylinder, it takes 16 springs.

The kit keeps the spring seats and the collets fitted on the production line: it only replaces the springs and the upper retainers.

CATCAMS reinforced valve spring set

Once released, the spring shoves the valve onto its seat and clamps it to the cam. Past a certain speed, valve, retainer and collets turn harder to restrain: too little load lets the valve lift off, bounce or even strike the piston.

The CATCAMS kit brings together 16 PAC-I99891 springs and 16 retainers 99440/S, rated 265 N seat pressure at 34.5 mm and 471 N with 12.0 mm of lift by the manufacturer. Factory spring seats and collets are left untouched.

Valve spring kit technical specification

Part number	Brand	Springs	Outer / inner Ø	Seat pressure	Open pressure	Rate	Max lift	Kit contents
PAC-I9989116+99440/S16	CATCAMS	Single	Outer 22.2 mm	265 N at 34.5 mm	471 N at 12.0 mm			16 springs, 16 upper retainers

Valve spring kit fitting details

Part	PSA original	Reinforced spring kit
Spring		Kit specific: PAC-I99891 (CATCAMS)
Retainer		Kit specific: 99440/S (CATCAMS)
Spring seat		Original kept
Collets		Original kept

The kit contains 16 single PAC-I99891 springs and 16 upper retainers 99440/S. The original spring seats and collets are kept.

Installed height means the distance between the upper retainer and the spring seat when the valve is closed, and every published load is exact only at the height quoted next to it. Grinding the valve seats moves the retainers apart, and the load then drops, per millimetre gained, by the amount of the spring rate in newtons. Check all 16 valves after machining.

	CATCAMS
Installed height	34.5 mm
Seat pressure at this height	265 N

Technical guide

Our brands

The Belgian brand CATCAMS (Cat Cams N.V.) produces camshafts for racing, exported to customers worldwide; its CNC grinding machine also cuts inclined lobes. Its springs are developed to work with its camshafts, which have taken part in the Le Mans 24 Hours and the BTCC.

How to choose

Extra spring load holds the valve down onto its cam as revs climb: this allows a sharper camshaft profile, a higher rev ceiling or a turbo, with no valve float. At 12.0 mm of lift, CATCAMS quotes 471 N for this kit. No maximum lift is published, so the lift of the camshafts you pick must be checked with CATCAMS before buying.

Criterion	Key point
Choosing the pressure	Only one pressure is offered: 265 N at the seat at 34.5 mm. To see whether it fits, look at the camshaft profile, the revs you wish to reach and any turbo; there is no point seeking more load than necessary, because anything beyond that only tires the cams and the remaining valvetrain parts for no gain. CATCAMS does not publish the original spring pressure, so no percentage gain can be quoted.
Single or double spring	A single PAC-I99891 spring works with the 99440/S upper retainer: no double spring is part of the content. Each valve receives one spring, with no inner spring to fit. Fitting stays simple: one spring per valve, installed with the supplied upper retainer.

When reinforced springs become necessary

Camshaft sharper than the original
Redline pushed higher by the build
Turbo or supercharger bolted on
Head rebuilt for circuit or rally use
Tired springs or valve float near the limiter

Compatible vehicles

Model	Engine code	Years
Citroën C2 (JM)	ET3J4	2005-2009
Citroën C3 I (FC, FN)	ET3J4	2003-2010
Citroën C4 (LA)	ET3J4	2004-2011
Citroën C4 I (LC)	ET3J4	2004-2011
Peugeot 1007 (KM)	ET3J4	2005-
Peugeot 206 (2A/C)	ET3J4	2003-2008
Peugeot 206 SW (2E/K)	ET3J4	2003-
Peugeot 207 (WA, WC)	ET3J4	2006-2013
Peugeot 307 (3A/C)	ET3J4	2003-2007
Peugeot 307 (3E)	ET3J4	2003-2007
Peugeot 307 SW (3H)	ET3J4	2003-2007

Important: this kit is reserved for the 1.4 16V ET3J4. The other PSA engines (TU, XU, EW) take different part numbers: check the engine code before ordering.