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arrow precision engineering ltd 12 barleyfield hinckley fields industrial estate hinckley leicestershire le10 1ye united kingdom +44 0 1455 234200 +44 0 1455233545 2010

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2 intro 4 8 10 12 14 16 18 20 22 24 26 index crankshafts competition steel rods extreme titanium rods split-crank one piece rods classic vintage rods higher volume o/e rods chromoly flywheels cam followers pre-ground shims valve guides rod overhaul production notes hints tips bespoke www.arrowprecision.com 28 30 partners

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2 introduction we are arrow precision founded in the early seventies by engineer david arnold david had been working at the heart of the british motor engineering industry for many years and in 1974 decided to put his extensive experience to good use and formed arrow precision the company has always been located in the midlands at the centre of the british motor industry this enabled arrow to tap into the highly skilled engineering workforce that the region was and still is famous for it soon became apparent to david that there was a demand for competition connecting rods made to the highest specification and the company began to develop a product range to satisfy the needs of the discerning uk motorsport market david s son ian is now the managing director and is staying true to the founding principles of quality product innovation and service since expanding into crankshaft production new premises working practices and machinery have been introduced the core of highly skilled and qualified engineers enjoy the kind of inward investment that allows them to manufacture to the highest quality standards we now offer a complete crank and rod assembly and together with accralite acl and omega perfectly balanced and matched components for your high performance application with an iso 9001 2008 quality programme new manufacturing techniques and an increased number of staff the company has continued to go from strength to strength a network of distributors has been set up to enable customers around the world to easily obtain arrow s products arrow precision introduction quality is the key to our success the ultimate in quality is only achievable using up-to-date methods the latest machinery and superb engineers our highly trained staff monitor every one of the many operations needed to manufacture each and every one of our products ensuring consistency of product time and again our highly robust monitoring process guarantees that our products are truly world class only the highest quality raw materials are good enough for our customers we work very closely with our suppliers to achieve world class standards of heat treatment and coatings we use nickel and chrome alloy steel that is vacuum degassed double air re-melt to ensure minimum inclusions all our `in house manufacturing processes are subject to sample inspections and constant monitoring with the latest manufacturing techniques being employed such as laser etching and automatic peening our customers span across all areas of motor sport from track day `fast road car and bike applications all the way through vintage classic and club racers to speedway world championship british superbike moto gp world rally championship nascar lemans touring car formula 1 and many more we also manufacture fully machined oe connecting rods and cranks for some of the leading brands of high performance road cars for whom only the best in the world is good enough whether you require a set of cam followers for a ford escort or high volume bespoke design connecting rods we have a solution that meets your needs we have produced this brochure to give you a feel for the people using our products world wide the things they say about us and how it affects their results tell you more about us than any advert we can think of product design development is the combination of thirty years experience of listening to clients needs innovative design solutions continuous product development and inward investment programmes in partnership with our forging mills we have developed optimum manufacturing methods and materials which when combined allow us to create an unbeatable product for both road and track arrow s aim is to forge long-term confidential partnerships with all customers both large and small our design team works with the customer taking the specified design criteria and turning it into a comprehensive drawing this includes tensile and reciprocating load analysis data material spec and full dimensions for the clients final approval www.arrowprecision.com

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4 crankshafts by streamlining the production process and encouraging a design for manufacture environment at the conceptual and detail stages we have minimised lead times and improved quality increased use of both cad and cam have increased communication and understanding in house and with our customers client successes include the street-legal saloon world speed record with the brabus e v12 rocket the nürburgring lap record with the radical sr8 first place in the lm2 class and second place in lm1 in the lemans 24 hours they all relied on our crankshafts to help them achieve their outstanding performance arrow precision have a tradition of craftsmanship and technical excellence but will bring greater consistency and efficiency through new working practices and technological advances in design and manufacture we aim to manufacture the best that technology can give us but always with the hindsight of experience picture courtesy of brabus gmbh competition competition brabus rocket the world s fastest street legal sedan arrow lead the field in the manufacture of high performance crankshafts and continue to inwardly invest in new machinery premises and working practices supplying many of the world s top motor manufacturers tuners and engine builders our chief aim is to facilitate our clients drive for ultimate performance arrow s ethos of quality attention to detail and service is the only way to achieve this cranks fea custom service with reverse engineering facility fea analysis own grade low sulphur en40b fully machined balanced between 2 and 15 grams arrow crankshafts and connecting rods not only meet but exceed irements r most stringent requ ou jörn gander head of vehicle development brabus bh y of brabus gm picture courtes the v12 brabus bullit www.arrowprecision.com

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6 crankshafts whether it s a pre production concept or a reverse engineered piece from the brooklands era communication is the key to success in all our projects we liase closely with our customers vital in the manufacture of high end detail critical motorsport components we design using the latest 3d cad systems including solid works 3d design software allows increased communication with the customer in the critical early conceptual and detail stages of the manufacture process finite element analysis both static and dynamic are available upon request and help optimise designs for application using arrow spec 722m24 en40b cleanliness is a major advantage by closely controling our own spec steel we ensure oxides and sulphides are reduced the resulting increased cleanliness and reduced impurities give a major improvement in transverse properties e.g strength and ductility making the crank less likely to fracture improving the mechanical properties raises the resistance to shock and offers a better diffusion of nitriding resulting in increased endurance the oil supply to the big end is optimised to maintain maximum oil film thickness and strength low pressure from the main journals gives more efficient supply at higher rpm it also enables the crankshaft to run at lower oil pressure reliably the fillet radii is critical radii must be full and of correct form in both rough and finished state to ensure the nitrided layer is of uniform thickness around the entire surface customer confidence in quality and delivery is paramount with over twenty years experience in the manufacture of competition engine components this is exactly what we offer technical spec technical 100 crack detection full certification as required roundness trace and topography trace as required popular applications available from stock specification arrow s expertise manufacturing and quality standards match up to our own expectations mark parish head of engine division minardi europe solid works cad render www.arrowprecision.com

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8 steel rods competition picture courtesy of matt clark balanced end to end within a gram 100 magnaflux tested laser etched highest quality fasteners roger clark motorsport s record breaking subaru impreza steel three factors determine the performance of a competition steel rod weight strength and balance we achieve these through experience and attention to detail whether you are a one time customer or an international corporation we offer the same high quality connecting rod to all over the past couple of years many small but significant advances have been made in the design and manufacturing process making our rods lighter and stronger one of the most important of these steps forward is the introduction of fully automated peening arrow understand the need to harden the surface to an exacting standard removing stress raisers and attaining an even surface hardness right across the rod we have run saturation tests to determine the optimum exposure to the process and are now satisfied that the rods we make have the most consistent surfaces in the industry we manufacture h and i beam section rods and want to talk to anyone interested in purchasing the best there is our flexible production lines can manufacture from just one to thousands of rods arrow steel rods have been successful in world rally cars lemans series f3 touring cars speedway to name but a few and used oe by british luxury and sports car manufacturers in high power applications if you need the finest competition rod for your project look no further than arrow precision competition genuine high quality double air re-melt steel fully machined full client control guaranteed delivery uniform machine peening arrow cranks and rods are the best base for our record breaking subaru s its finest itish engineering at br picture courtesy of sywell leisure sports matt clark roger clark motorsport limited jodie hemming in action at silverstone www.arrowprecision.com

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10 titanium extreme 30 weight saving extreme titanium 6al-4v titanium forging full client control unique stud fastening system fully machined thermal molybdenum coated controlled peening balanced end to end to within a gram laser etched ilmor picture courtesy of arrow s titanium connecting rods are extreme they are used in extreme performance situations world super bike for instance where a light drive train and very low reciprocating weights gives instant throttle response and much lower gyroscopic forces allowing bikes to turn in quicker the thirty percent weight saving over steel makes a huge difference to the reciprocating mass of the rod and cap assembly and can reduce stress loading on other vital engine assemblies we have made great strides in the area of fastener retention probably the achilles heel of titanium rods where most titanium rods use a bolt to retain the end cap we use a stud and nut assembly this allows the correct stretch to be achieved without worrying about thread galling here s what john trigger super bike engine builder said about our retainer arrangement i have found arrow precision s stud and nut retainer design on the big-end eye to be 100 per cent superior to conventional bolt retainers because after 3000 racing miles there is no measurable stretch in either the stud or rod impressive when other benefits include ease of fitting and much greater reliability the new arrow precision ti retaining system is a huge improvement over the old style bolt arrangement all this coupled with our new thermal molybdenum coating equipment greatly enhances quality and reliability in a new generation of arrow titanium rod performance vehicles using our titanium rods include the minardi f1x2 cars moto gp porsche 997 rsr and nissan patrol desert racers if you seek extreme performance look no further than arrow precision jeremy mcwilliams testing the ilmor moto gp bike in qatar picture courtesy of minardi ecision we get from arrow pr d that is what uk mand high quality an tim roberts ilmor we de minardi f1x2 fleet rely on arrow titanium rods www.arrowprecision.com

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12 one-piece split crank of vega ra cing 100 magnaflux tested balanced end to end laser etched split-crank arrow precision split crank application one-piece rods are second to none we are pleased to have rods in speedway grand prix machines grass track and world karting winning at the highest levels week in week out our design team will help you develop an existing rod or come up with alternative solutions to improve your performance our engineers aim to lighten the steel rod but retain it s strength there are two types of non-split rod available each requiring different materials and heat treatment processes if your design has liners in the big end and a bronze floating small end our en24 nickel chrome forgings will be used for an unlined version carburised steel en36 is required and the con rod is heat treated only in necessary areas to 62 rockwell c this design has greater benefits it s as strong as a lined rod but 20 lighter with our flexible production planning we are able to manufacture variable quantities from a one-off experimental design to hundreds of identical rods e.g for use in sealed kart race engines as a customer you benefit from our years of experience whether you are manufacturing a tried and tested design where consistency is all or revolutionising the internal combustion engine we can help if you crave ultra high performance from a single cylinder arrow make the rod for you picture co urtesy one piece lindgren stead and saifutdinov in action earlier this year material choice lined or unlined full client input control h i section fully machined controlled heat treatment regard as precision produce what we arrow the best connecting rod on the market trevor eadon vega racing uk www.arrowprecision.com

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14 vintage classic individuals and single marque clubs make use of our expertise we make their replica rods from any one of our six standard forgings but unique to arrow is the 24 long nickel chrome steel forging this allows us to manufacture race quality rods for larger engines bentleys lagondas hispano suizas etc we can reverse engineer from an original design or we can innovate improving on designs which are up to 100 years past their sell by date each rod we make is treated with as much care and respect as a modern day race engine component as the owner of a vintage or classic car you will want control over the manufacturing process bring us a pattern to work from or manufacturers original spec and we can produce a drawing which will include material spec any bushing requirements special machining needs and of course dimensions and fastener types all for your approval from as few as one to hundreds of quality rods can be produced using flexible manufacturing lines and unique processes arrow precision make some of the finest rods available for classic vintage and veteran automobiles we can copy or innovate in any quantity and at the highest quality what more could you ask picture courtesy of uniform machine peening 100 magnaflux tested laser etched vintage arrow have built a reputation for quality by adhering to some of the values that our grandparents would have recognised far better than us a good deal of craftsmanship and expertise go into making the products that we export worldwide good reason then to trust us to craft a complete set of rods for your vintage or classic car from a 1906 mors record breaker or the rarest of pre-war italian race cars to 80 s and 90 s formula 1 cars guy broad in action with a broad sport prepared car broad sport classic service we receive d highly recommend the quality and we woul geoff richardson geoff richardson race engines uk custom orders fully machined unique long forgings guaranteed delivery en24 forged steel balanced end to end geoff richardson prepared lola t240 powered by richardson cosworth bdm geoff rich ardson ra ce engine s picture co urtesy of www.arrowprecision.com

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16 higher volume radical sportscars sr3 radical sportscars o/e higher volume where the need arises for a high quality rod in a performance production car arrow precision lead the way we have invested in new machinery and premises allowing us to move into volume production without compromising quality or delivery deadlines our production lines are producing rods at higher efficiency and of a better quality than ever before these fully machined rods are bound for the production market and are of the same quality found in a british touring car or a bentley speed six but we also have the ability to produce a high quality forged type connecting rod this rod is machined only in critical areas we still use only the highest quality drop forged nickel chrome alloy steel en24 but by only machining to achieve tolerance we significantly reduce costs these rods are specially forged for each application so production runs of at least five hundred are recommended for this method of production these critically machined rods can t be balanced and used at the highest end of the market but the material and dimensional accuracy is far above any other critically machined forged rod on offer today both our fully machined and forged type rods are subject to the same fastener technology and quality control as our competition steel rods guaranteeing you a consistent product in a changing world if you have a need for a high quality rod in a production line environment talk to us first picture courtesy of o/e t quality anufactured to the highes m mick hyde radical sportscars tu pic re c our tesy o di f ra cal spo rtsc ars genuine high quality double air re-melt steel magnaflux tested guaranteed delivery drop forged en24 brand name fasteners radical s sr8 at brands hatch 100 consistent peening bronze bushing available www.arrowprecision.com

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18 flywheels arrow precision s range of flywheels are all manufactured from en24 chromoly steel and are designed to complement high performance engines the advantages of a custom flywheel are threefold they are lighter allowing an engine to rev more freely they are also perfectly balanced reducing stress on other components and they can be custom made to exactly fit any after-market clutch our flywheels fall into two categories 1 integral ring gear type supplied in en24 chromoly in t condition fully machined these flywheels offer considerable advantages over original equipment most importantly the ring gear is machined straight from the core material giving excellent weight distribution and wear characteristics the flywheels are either finished in a polished qpq tuftride or matt tuftride coating giving a black surface they are then laser etched with our part numbers trademark and weight 2 separate ring gear type these are supplied as above in en24 chromoly in t condition without the outer ring gear these flywheels are at the pinnacle of automotive component manufacture in europe today arrow offer a full engineering service and liaise with our clients in all aspects of the design process we can produce to manufacturers original spec or completely redesign the flywheel to incorporate specialist clutches we also manufacture a range of related components including back plates and starter gears arrow precision offer a full custom service on all items sy of nismo jap chromoly chromoly en24 chromoly steel lower weight stock items custom made qpq tuftrided fully machined laser etched back plates and starter gears arabian oasis racing in action with thier nismo 350z in japan flywheels arrow aimed at the heart of your engine of nismo japan product a world class s deserve class race car world oduct arrow give us that pr daichi yamaoka nismo japan picture courte picture courtesy an www.arrowprecision.com

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20 followers cam followers have been amongst our best selling products right from the word go we have been developing new ideas and techniques for over twenty years today our depth of experience controlled manufacturing processes and innovation have ensured a product with an ever-growing reputation in the field of motor sport high lift performance cams exert huge friction forces on the sliding face of a follower lowering the sliding friction whilst retaining oil for lubrication during the running in period is one of the main problems facing the designer diamond coating and superfinishing offer solutions to this problem a ground finish will give surface readings of about 0.4 0.3ra a lapped finish will give 0.2ra where a superfinish will give an amazing 0.05ra add to this a diamondlike coating to negate the need for oil retention and a large part of the running in problem is solved in un-coated situations the nitride heat treatment process offers several advantages over carburised treatments such as excellent levels of hardness and retainment of dimensional accuracy the nitrided component is resilient to softening and will retain its surface hardness up to temperatures of 500 degrees c where on cooling the whole component will revert to its original hardness these components are less easily heat damaged by temporary lubrication failure than their carburised counterpart nitride hardening improves fatigue strength and a mean hardness of 750-950 hv is achieved by using custom baskets allowing the component to be uniformly exposed to the process our followers are renowned for their durability and strength and are used in lemans series world rally touring car f3 and f3000 plus a host of others arrow s cam followers are the choice for leaders in motor sport julian briche in one of the peugeot sport entry s to the danish touring car championships picture courte sy of peugeot sport engineerin g cam cam genuine high quality followers en40b billet high dimensional accuracy nitride hardened guaranteed delivery custom orders stock items arrow components give us the ability to win championships peugeot sport engineer ing denmark graham millar airborne at millbrook sbd 230+bhp 2.0l 16v vauxhall engine photography tony large www.arrowprecision.com

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22 shims pre ground · en24 chromoly steel · full client control · guaranteed delivery · blanks available · increments of .025mm · top hat and biscuit type pre ground to complement our range of cam followers arrow produce a range of ultra high quality tappet shims we can supply both top hat and biscuit type and these can be manufactured to any size the shims are heat treated to maximum condition giving excellent wear characteristics during normal use and to impaction in the event of valve bounce during over revving our tappet shims are made from the highest quality en24 chromoly steel the shims can be ground to any size from 5mm down to a minimum of 1.5mm we sell both blanks and pre ground shims the blanks allow the client to grind his or her own shims for total control or we can pre grind the shims in increments of .025 1/1000 removing the need for client machining facilities based on knowledge gleaned over thirty years our team of experienced engineers will advise and problem-solve on your behalf then apply dedicated manufacturing techniques to the production of your engine components all enquiries are dealt with in the strictest of confidence and our staff will do all they can to help whether its ten shims or thousands if you need a quality shim manufactured to strict tolerances and you have delivery times that must be achieved then you need to talk to arrow · stock items picture courtesy of vac motorsports shims when we want to win we use arrow precision components ner motorsport tony salloum president vac motorsports usa european endurance championship volvo prepared by mühlner motorsport picture courtesy of mühl www.arrowprecision.com

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24 guides arrow precision s range of valve guides are second to none we have many years of experience manufacturing valve guides for both race and street engines and have designs available catering for a wide range of applications we of course also offer a fully bespoke design service to meet customers specific requirements our customers can choose for their valve guides to be made from three different standard materials hard brass colsibro and beryllium copper all of which are kept in stock these are the materials we would strongly recommend however if a customer has other materials in mind these can be sourced and used if necessary our flexible manufacturing lines ensure short lead times and guaranteed delivery dates agreed with the customer before manufacturing begins our highly accurate manufacturing methods mean that all valve guides are concentric to within 0.05mm arrow aimed at the heart of your engine valve genuine high quality short lead times custom made material choice guaranteed delivery flexible batch manufacture valve guides ow we get quality delivery service and value from arr picture courtesy of roelofs eng we couldn t ask for more richard williams rs williams limited historic sports ferrari 250 gto prepared by roelofs engineering bv holland bv www.arrowprecision.com

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26 quality rod production production arrow precision manufacture components of exceptional quality in an industry known for its exacting standards our components will out-last and out-perform the competition offering the customer excellent value for money we manufacture from the highest quality steel specified and purchased by us from mills in western europe vacuum de-gassed nickel chrome alloy steel double-air-re-melt has a very low sulphur content .025 which means fewer inclusions and faults when forged imperfections are reduced to an absolute minimum ensuring excellent consistency in the six standard forgings reaching our machine shop we refer to this steel as en24 en24 817m40 british standard as used by arrow precision for most rods is comparable to 4340 aisi/sae which is available as both air melt and vacuum remelted steel checks should be made when comparing manufacturers just what type of 4340 is being used 4340 is higher in hardenability than any other standard aisi grade other names for 4340 include werkstoff 1.6565 and kurzname 40 crnimo 6 other steels used include 300m which is a silicon modified steel with slightly higher carbon and molybdenum contents plus some vanadium this is a vacuum remelted steel with deep hardenability along with ductility and toughness it has no comparable steel names before the machining process can begin a detailed drawing of the connecting rod is sent out for your approval a tensile and reciprocating load analysis will have been carried out and the design produced with the help of our unique cad programmes drawing details include material spec bushing requirements special machining needs and of course dimensions and fastener types once you have ensured the spec meets with your requirements your order will be scheduled in our machine shop and a firm delivery given and achieved our engineer will then write the machine plan including the selection of raw materials from as few as one to hundreds of quality rods can be produced using flexible manufacturing lines and unique processes during production all facets of the forgings are machined to ensure symmetry and balance and to remove any potential flaws having been split the big end is then torqued up using slave bolts we work closely with our fastener suppliers to ensure the correct bolt is selected for each application and point out the importance of attaining correct stretch in each fastener please see our hints and tips booklet after the peening process the slave bolts are removed and the correct bolts torqued up in their place we have enhanced surface hardening considerably by introducing a new peening process all peening is now fully automatic and exposes the rod to an exact level of steel shot peening in a controlled and uniform manner this allows 100 consistency to be achieved right across the surface of the rod removing stress raisers and reducing further the chance of stress fractures forming by carrying out tests we have determined the saturation point on a graph allowing us to achieve optimum hardness and consistency across many hundreds of components the rods are finish ground and balanced end to end to within a gram on each operation a recorded sample inspection is carried out our magnaflux crack detection unit tests all our rods in our specially constructed dark room and prior to dispatch a full sample inspection and 100 visual is undertaken the adherence to iso 9001:2000 enables us to monitor all materials and processes from beginning to end helping us to guarantee an excellent product finally and uniquely every rod produced is laser etched with the company logo but more importantly a date of manufacture a part designation and a set number many manufacturers mark their products with a stamp not only can this be hard to read but it can also harm the integrity of the item just another reason to buy from arrow precision notes made to the highest quality standards the best we have found rod overhaul service arrow rods are made to the tightest tolerances and highest standards but after an over revving incident or prolonged hard usage you might decide that you would like our team to check them for you we offer a full rod overhaul service removing the risk of running previously used rods in your precious engine our inspectors check all dimensions against original specification paying particular attention to big end and small end size roundness and alignment the rods are also magnaflux tested for any cracks and a report produced outlining the condition of the rods and recommending the best course of action to take stelios chaldeos j mattis engine tech greece the level of intervention necessary to completely recondition a rod varies greatly from a set of new fasteners to re-bushing and re-peening it is possible to bring most rods back to perfect condition however heavy wear at the big end is generally uneconomical to repair if you have purchased a previously used engine are carrying out an end of season rebuild or have had an over revving incident our overhaul service provides you with the confidence that your rods are in first class condition www.arrowprecision.com

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