StrikeEngine SEARCH ENGINE - Car Sites ONLY
we are sure you will find what you are looking for and more!"
CDFRacing Ltd was founded by Chris Florey in 2005.
CDF Racing are a precision engineering company here in the Uk .
We manufacturer Timing pulleys , Adjustable Cam pulleys , Cam gears
,Sprockets, Lightweight pulleys and more using the latest cnc turning
and high speed milling machines.
We also stock a wide range of automotive engine pulleys for Subaru
impreza ,Toyota starlets and supras , Nissan gtir's , Ford cosworth and
zetec and many more.
Along with this we can also offer leading brand names like Whiteline,
Samco, Baliey, Powerflex,Peformance friction and Ksport.
We manufacture parts for some big name in the automotive world including
the USA Rally team
CDF are mainly known for there lightweight pulleys. Although we have
also been producing some quality suspension parts like droplinks, Anti
lift kits and engine mounts.
CDF Racing are looking to now push there products worldwide and are
looking for sole importers for each country.
We have already appointed Vermont sports car (US RALLY TEAM) for USA and
are currently talking to companies in
Australia, Canada and Japan
- CDF Lightweight Pulley Kit Subaru Impreza
The COBB Tuning Lightweight Main Pulley is CAD designed and CNC machines
from Billet 6061-T6 and anodized to withstanding the toughest of under
engine conditions. Replacing the factory main pulley, the lightweight
unit improves acceleration by reducing the rotational mass of the stock
unit by as much as 4lbs.
- Mini, Audi
Reduce Your Rotating Mass
This pulley set includes a precision machined 6061 anodized aluminum
copy of of the Crank pulley, Power Steering Pulley and the Alternator
Pulley on your VW. Reducing the weight on these pulleys reduces the
parasitic drag on load on the engine so there is more left for the
These CravenSpeed pulleys are stock diameter (OEM sized) crank pulleys,
utilizing the original belt layout. Since the crank pulley diameter is
unchanged, they maintain alternator output at exactly stock output
levels so you need not worry about flat batteries or weak charging
capabilities. Through extensive weight savings afforded by 6061 aircraft
aluminum construction, power gains of up to 10% are available depending
on how your MINI is set up. CravenSpeed crank pulleys come fully
balanced and counter-weighted, and feature anodizing for superb wear
resistance & strength.
The rule of thumb is that each pound of weight taken off the engines
rotating assembly is worth approximately 2.7HP. The concept is that the
crank is a parasite; it does not put power to the drivetrain but still
requires the energy produced by the engine to rotate. When you reduce
this parasitic weight, you release power that was previously used only
for spinning the supercharger and alternator.
Is this crank pulley safe?
The pulleys on the R53's 1.6 and most new smaller engines have an
elastomer (rubber ring) incorporated into the pulley that looks similar
to a harmonic damper. The elastomer in the OEM pulley serves as an
isolator, which is there to suppress natural vibration and noise from
the engine itself, the A/C compressor, P/S pump, and alternator. The
purpose of a traditional harmonic damper is to protect against crank
failure from torsional movement. This is not necessary in the MINI or
most modern engines because of the many advances in engine design and
materials. Factors such as stroke, displacement, inline, V
configurations, power output, etc., do determine when and how these
harmonics and torsional movements occur.
Supercharger Pulley from Craven Speed
Roger Clark Motorsport - Subaru
Roger Clark Motorsport’s latest addition to their lightweight pulley
sets is the Super-lite series, specifically designed for Subaru
Impreza’s manufactured from 1992 to 2000.
Developed for the extreme power enthusiast, the further weight reduction
has been achieved by additional precision machining and removal of the
air conditioning drive on the crankshaft pulley.
Constructed from the highest quality aluminium, these pulleys have been
manufactured utilising the latest CNC techniques as used by today’s
leading Formula 1 teams.
After machining, all Super-lite pulleys are Nickel plated, followed by
the CNC of the “Roger Clark Motorsport” logo.
Weighing just 850grams, they offer a reduction in weight of 2.33 Kgs
over the OEM units. This weight reduction lowers the engine’s
reciprocating mass, improving acceleration and enhancing engine response
as well of giving your engine the Roger Clark Motorsport identity and
seal of quality.
Our kit retains the standard pulley diameters which allow the use of the
existing auxiliary drive belt to ensure power steering and alternator
speeds remain standard.
The Super-lite kit comprises of crank pulley, alternator pulley, power
steering pulley and a replacement nut and spring washer.
Please note that it is not possible to run air-conditioning with this
The Super-lite series is only available in Nickel finish.
STILLEN has long manufactured precision pulleys for our supercharger
kits. We have used this expertise to produce a new line of high
performance crank and accessory pulleys.
Each pulley is machined from 6061 aerospace grade billet aluminum with a
bold new design to maximize performance, strength and minimum weight.
304 stainless steel sleeves are used for main seal contact points for
durability. Stock timing marks are maintained and keyways are precision
broached. All pulleys are CNC turned, milled and balanced based on
computer generated designs.
Up to 80% lighter weight than stock steel and up to 10% lighter than
other aftermarket pulleys, we’ve seen power gains of up to 10+ HP at the
Our most popular pulleys sets, they increase performance by reducing the
engines spinning weight and also because they underdrive all the
accessories (a/c, alternator, p/s & w/p). We are very careful not to
overdue the amount of underdrive for two main reasons. We do this to
maximize the weight loss on the crankshaft where most of the horsepower
gains are realized. We are very careful not to overdue the amount of
underdrive very little horsepower is gained from extreme underdriving
over 20%. We always keep our underdrive percentage under 20% allowing us
to maintain factory specified outputs for the accessories (a/c,
alternator, power steering & water pump). Our designs allow you to
upgrade your stereo to a system of up to 600 watts (RMS) and not have
any charging problems. Underdriving gives you 10-15% more power than our
stock diameter pulley sets (See below).
Lightweight Underdrive Pulley
Some customers asked for pulley sets without underdrive. They want to
keep the stock speed for their alternators, superchargers and water
pumps. UR developed this version because the performance benefits of
weight reduction outweigh the need for underdrive, especially for audio
enthusiasts as some audio competitions require voltage to remain at a
specific level. Stock diameter is also important for factory or
aftermarket superchargers. Superchargers need the stock diameter to keep
the same boost you had with the factory crank pulley. The big weight
loss gets you a lot more power to the wheels.