

With 167 bhp from the factory and an entertaining, capable chassis, the Peugeot 306 GTi-6 and
Rallye models have acquired something of a cult status as great all round fast road and trackday hot hatches.
But even the best can be improved upon, which is where leading high performance valvetrain
specialist Cat Cams NV comes in, with its 4903106 profiles. A direct replacement for the
comparatively mild standard factory XU10J4RS cams, the full technical specification of the
Cat Cams 4903106 profiles is:-
|
partnr. |
duration |
duration |
maximum lift |
parts |
application |
|
[data link] |
[0.1mm+cl] |
[1.0mm+cl] |
[cl=0] |
[-] |
(TURBO) |
|
4903106 |
267 / 259° |
228 / 224° |
10.95 / 10.40mm |
O.E.M. |
Fast Road Sport |
Back to back dyno testing on Northampton Motorsport’s dyno by Peugeot specialist Pug1off has
shown (when used in conjunction with a suitable ECU remap) that the Cat Cams 4903106 profiles
produce exceptional power gains, in this case 26 bhp.
Crucially, both power and torque are improved throughout the rev range, with a 17 lb.ft peak torque
increase and 10-12 lb.ft extra at 4500 rpm, making this an ideal fast road upgrade.
During testing the peak power increased to 181 bhp at 7500 rpm, with over 175 bhp available from 6100 – 8000 rpm.
(NOTE: The stock car seemed down on power, producing 155 bhp but this could be as a result of the 145,000 mileage.)
As a result of the Cat Cams / Pug1off ECU remap package, peak torque increased to 150 lb.ft on the high mileage test car.

Belgian performance camshaft manufacturer Cat Cams is delighted to announce the launch of a new fast road ‘Sport’ cam profile for the popular RenaultSport Clio 197.
Developing a cam profile for the Clio 197 F4R 830 engine is something of a challenge because the valve to piston clearance is minimal, limiting the extra amount of lift available to extract additional performance.
Designed using unique, in-house developed software, the end result of Cat Cams work is a pair of mild negative radius ‘Sport’ profiles manufactured from bespoke, hollow steel billets and CNC ground to ensure accuracy.
These ‘Sport’ profiles are a direct replacement for the original units as well as being compatible with the Renault factory hydraulic followers and variable valve timing system. Ideally suited to Clio 197 engines using the stock ECU and inlet plenum, Cat Cam’s ‘Sport’ profiles retain decent idle quality and the driveability needed for fast road use.
Cat Cams has also incorporated an adjustable cam position sensor ring on the inlet camshaft, enabling easy timing adjustment without having to alter the cambelt position.
Initial dyno results show that Cat Cams Sport profiles produce a minimum of 5 bhp and 5lb.ft of torque, running in conjunction with the factory inlet and ECU.
The new Clio 197 ‘Sport’ cams carry the part number 5504402 and are available now, priced at £686.06 + Vat and delivery. For motorsport users five additional rally, rallycross and race profiles have been launched at the same time.
|
partnumber |
czas |
czas |
max wznios |
wznios GMP |
osprzęt |
przeznaczenie |
|
[data link] |
[0.1mm+cl] |
[1.0mm+cl] |
[cl=0] |
[cl=0] |
[-] |
|
|
5504402 |
268 / 263° |
234 / 227° |
11.50 / 10.85mm |
0.05 / 1.35mm |
O.E.M. |
Ulica |

Belgian performance camshaft manufacturer Cat Cams is delighted to announce the launch of five new motorsport orientated cam profiles for the Renaultsport Clio 197.
Designed using unique, in-house developed software, the end result of Cat Cams work is a range of negative profiles manufactured from bespoke, hollow steel billets and CNC ground to ensure accuracy.
The range of specifications covers FIA Group N and rally cams designed to work with the stock Renault valve train and pistons, through to high lift short duration rally / rallycross and race cams specified for use with pocketed pistons and individual throttle bodies.
Here is the full technical breakdown of the new Cat Cams Clio 197 motorsport cam profile range:-
|
Partnr. |
czas |
czas |
max wznios |
wznios GMP |
osprzęt |
przeznaczenie |
|
[data link] |
[0.1mm+cl] |
[1.0mm+cl] |
[cl=0] |
[cl=0] |
[-] |
|
|
5504401 |
287 / 282° |
234 / 229° |
11.60 / 10.90mm |
0.05 / 1.30mm |
O.E.M. |
HYDR: F.I.A. Gr.N |
|
5504403 |
277 / 269° |
243 / 234° |
11.55 / 10.80mm |
0.05 / 1.75mm |
O.E.M. |
HYDR: rally & cross |
|
5504404 |
285 / 277° |
251 / 243° |
11.70 / 11.55mm |
0.15 / 2.30mm |
custom |
HYDR: rally & cross |
|
5504405 |
293 / 285° |
258 / 251° |
11.95 / 11.70mm |
0.30 / 2.75mm |
custom |
HYDR: rally & race |
|
5504406 |
300 / 293° |
266 / 258° |
12.20 / 11.95mm |
0.50 / 3.30mm |
custom |
HYDR: rally & race |
Vauxhall’s legendary C20XE 2.0-litre 16-v engine, also known as the ‘red top,’ is often the choice for tuning or transplant, into cars as diverse as Novas, Mantas and Mk1 Ford Escorts.
Hence why Belgian performance camshaft manufacturer Cat Cams has launched a full range of motorsport profiles for the evergreen C20XE engine, ranging from a rally profile that’s compatible with hydraulic tappets, to full race profiles designed for use with mechanical lifters.
Designed using unique, in-house developed software, Cat Cam’s C20XE profiles are manufactured from blank chilled iron castings and CNC ground to ensure accuracy. These profiles are available in gun drilled steel billet format on request.
Cat Cams has pioneered the use of high lift / short duration profiles, enabling engines to produce an unmatchable spread of torque with excellent power characteristics. The full part numbers and technical details of Cat Cam’s new C20XE motorsport cam profiles are thus:-
|
partnr. |
czas |
czas |
max wznios |
wznios GMP |
osprzęt |
przeznaczenie |
|
[data link] |
[0.1mm+cl] |
[1.0mm+cl] |
[cl=0] |
[cl=0] |
[-] |
(TURBO) |
|
4600733 |
274 / 274° |
236 / 236° |
12.00 / 12.00mm |
2.00 / 1.95mm |
custom |
HYDR: rally & cross |
|
|
|
|
|
|
|
|
|
4600881 |
261 / 257° |
233 / 221° |
11.30 / 10.30mm |
2.30 / 1.50mm |
custom |
MECH: rally & cross |
|
4600882 |
267 / 261° |
238 / 233° |
12.00 / 11.30mm |
2.90 / 2.50mm |
custom |
MECH: rally & cross |
|
4600883 |
272 / 267° |
242 / 238° |
12.50 / 12.00mm |
3.15 / 2.95mm |
custom |
MECH: rally & cross |
|
4600893 |
285 / 277° |
252 / 244° |
13.25 / 12.75mm |
3.90 / 3.35mm |
custom |
MECH: rally & race |
|
4600868 |
293 / 285° |
259 / 252° |
13.00 / 12.50mm |
4.20 / 3.70mm |
custom |
MECH: rally & race |
|
4600864 |
295 / 287° |
262 / 254° |
12.50 / 12.00mm |
4.50 / 3.95mm |
custom |
MECH: rally & race |
|
4600880 |
293 / 285° |
262 / 254° |
13.00 / 12.25mm |
4.50 / 3.95mm |
custom |
MECH: rally & race |
|
4600896 |
293 / 285° |
260 / 252° |
13.75 / 13.25mm |
4.85 / 3.65mm |
custom |
MECH: rally & race |
|
4610801 |
277 / 261° |
244 / 224° |
12.75 / 10.15mm |
2.80 / 0.80mm |
custom |
MECH: race & drag |
|
4610803 |
277 / 278° |
244 / 230° |
12.75 / 11.00mm |
2.80 / 0.80mm |
custom |
MECH: race & drag |