The rule used to be: under excessive strain, connecting rods can easily tear apart, since the force is exerted in a linear manner. In fact, some rod suppliers say the majority of the rods they sell today are custom order rods rather than standard dimension rods from off the shelf stock. Categories. 270 likes. A restored muscle car places far different demands on parts than a high rpm motorcycle engine does. It still takes real world testing to validate the design. Conversion and usertracking via Google Tag Manager. Consequently, if the rod bore is out-of-round or worn, the rod usually has to be replaced unless a replacement bearing with an oversized outside diameter is available. See All - Best Selling. Of course, an I-Beam rod can also be strengthened to handle almost any load but it usually involves increasing the thickness and weight of the rod and/or using a stronger alloy. Why? The connecting rod consists of a connecting rod shank that links the connecting rod’s small end with the connecting rod’s big end. We are now able to produce connecting rods with different cross-sections and materials for all applications. Over 60 percent of late model connecting rods are powder metal I-beam rods. For engines running over 8.500rpm we have NM088 conrod bolts which are manufactured to our specification by PANKL. So as long as the rod supplier stands behind their product with their brand name and reputation, the “foreign versus domestic” rod debate shouldn’t matter. LPC Connecting Rods. 5140 Forged Connecting Rods are an economically priced alternative to the time and expense involved in reworking OE connecting rods. With our high-performance I-beam steel connecting rod (like in this set for the 1.8T), however, this generalisation doesn’t apply. Both designs are manufactured from Forged 40/43 steel, heat treated and shot peened for reliability. The cracking process leaves a slightly irregular surface along the parting line between the cap and the rod that is like a jigsaw puzzle and only goes together one way. Engine builders are buying just as many standard length rods as they are longer rods.This brings us to rod ratio, which is the length of a connecting rod (center to center) divided by the stroke of the crankshaft. Catalogs get out of date very quickly, and many Web site are not updated as frequently as they should be. Selecting the strongest rod for a performance target is absolutely essential. To ensure that this does not happen, high-performance connecting rods made of stronger materials and with a different cross section than series models have been designed. Powder metal casting also allows the ingredients in the steel alloy to be combined in ways that are impossible with conventional metal casting techniques, and the finished parts have less internal stress as a result of the fusing process. Here, the connecting rods bend, since these forces are not linear. The special alloys that are used to make powder metal rods allows the rod caps to be “cracked” (separated) from the rod rather than cut. Others disagree, and say it doesn’t really matter. These can quickly tear or bend, ruining your entire engine. Maxpeedingrods high performance H-Beam connecting rods with Forged SAE 4340 Chrome Moly Steel for the highest strength and durability, dedicated for street and race vehicles. Connecting rods are offered in H- and I-beam configurations, and you … If an engine is being built to turn significantly higher rpms than the stock motor, or to produce significantly more power (more than 40 to 50 percent), the connecting rods will probably have to be upgraded to assure adequate reliability. Only one aftermarket rod supplier (Howards Cams) currently offers performance rods made of powder metal. These cookies are used to make the shopping experience even more appealing, for example for the recognition of the visitor. The result is better cap alignment and a stronger rod when the cap is bolted to the rod. It also reduces the rocking motion of the piston as it passes TDC to reduce piston slap and noise. ．50% stronger than OE steel rod. If you choose a set of rods based strictly on a catalog or Web site description, or you choose a set based solely on length, weight or price, you may not be making the best choice. Connecting rods with an I-beam are the most common type of connecting rods and thus the ones most often used in series production. The cross-section of connecting rods with an H-beam resembles a capital ‘H’, which is where they get their name from. A word of caution, though, is that all “4340” steel alloys are not necessarily the same. Of which 10 years in the premier class of motorsport! The rods that work best in an all-out drag motor probably wouldn’t be the best choice for a street performance engine. Several racing teams are running bare rods with specially plated pins to improve durability. This type of design can provide higher compressive strength with less weight than a comparable I-Beam, according to the suppliers who make H-Beam rods. H Beam 6.123 2.125 .984 Bronze Bush 4340 Connecting Rods Fits CHRYSLER 318 340. We’ll be your long-distance pit crew, and help you figure out which connecting rods or other internal components are best for your Mitsubishi Evo, Subaru, Toyota, Honda or whatever you drive. Hurricane Speed & Performance, 四川省 成都市 （Chengdu, China）. Board index Inline Performance 240-300 "Big Block" Six Performance; LS chevy connecting rods. $350.99 Scat Pro Series I-Beam Connecting Rods Small Block Chevy. $216.87. SCAT Connecting Rods feature the same high-quality craftsmanship that has led us to the forefront of the performance industry. That’s why a few minutes spent on the phone with your rod supplier can be so valuable. This means extra clearance must be built into the engine so the pistons won’t smack the heads. Rod suppliers produce a number of variants on the basic I-Beam design. An engineer would design a rod configuration, test it until it broke, then try to beef up the areas of the rod he felt were weak. Standard I-beam connecting rods are often heavier than those with an H-beam. The center area that connects the two sides of the “H” together provides lateral (sideways) stiffness. Powder metal (PM) rods are made by compressing powered steel in a mold and then heating the mold to a temperature where the powder melts and fuses into a solid part. GO! $104.01. $347.99 Filter By Vehicle. Consequently, these budget-priced rods allow engine builders to offer their customers more options and more affordable alternatives for upgrading an engine. Many drag racers run aluminum rods because they cost less than titanium and provide a good combination of lightness and strength. Since they are exposed to extreme forces, they have to be able to sustain a lot when you boost your car’s performance. Any flashing, burrs, nicks or other defects along the sides of the rods should also be ground off (grind lengthwise, never sideways) to eliminate stress risers that could lead to cracks and rod failure later on. Quick View. Register NOW and always be the FIRST to receive our latest product and project information! Most aftermarket performance rods are made using 4340 billet or forged steel. Nor would rods designed for a circle track sprint car be the best choice for a NASCAR engine or a marine endurance engine. This is a chrome moly alloy with high tensile and compressive strength. Connecting rods are placed under more stress than any other component in the engine. Our prices are competitive and our shipping is free on orders of more than $199. Connecting rods are important and highly stressed components in your engine. As a rule, most stock connecting rods can handle up to 25 to 40 percent more horsepower than an unmodified engine was originally designed to produce. ONE-PIECE CONNECTING RODS. These cookies are necessary for the basic functions of the shop. $57.99 Chevrolet Performance Replacement Rod Bolt 2" Length. Stroke length aside, connecting rods are one of the basic tunable components in a competition engine. You would want to use a set of top-of-the-line performance rods that are capable of handling the highest loads. Over the past couple of years, the price of high quality steel as well as many other metals such as copper and titanium has shot up dramatically for a variety of reasons (China’s exploding economy being one, the ongoing war in Iraq being another, and changes in the steel industry itself being a third reason). We have the connection. K1 Technologies K1 Technologies strive to bring their customers a high-quality connecting rod at an affordable price, while providing world-class customer service. In this process, high forces act on the connecting rods: from extreme heat to pressure and tensile and lateral forces. For installation, the big end is split on the crankshaft and mounted on the crank pin with a slide bearing. A connecting rod is an engine component that transfers motion from the piston to the crankshaft and functions as a lever arm. The connecting rod itself can have different cross-sections, which define the respective connecting rod type, for example, I-beam, X-beam, or H-beam. GO! The separation procedures also vary: the rods may be cracked (broken) or milled/ground. For big buck racers or really demanding applications, though, these kind of rods would not be the right choice. On most rods (except Chevy “LS” engines), the pin bores are offset slightly. We purchase our steel (4340 & 300M) in the USA and comes with Military & Industrial Certifications. The mistake you don’t want to make, however, is to use low priced “economy” rods in an engine that really needs a set of top quality performance rods. Most of these rods are made overseas (in China, primarily) and typically sell for less than $600 a set for a small block Chevy V8. The engineers who design connecting rods know how to analyze the forces that act on rods. Quick View. Welcome to LSXceleration! The companies who sell these rods say their products are ideal for racers who otherwise might not be able to afford better rods for their engine. This method of manufacturing allows parts to be cast to very close tolerances. Other cookies, which increase the usability of this website, serve for direct advertising or simplify interaction with other websites and social networks, will only be used with your consent. Connecting rods are produced from different materials. There is also a debate over the relative merits of “Made-in-USA” forgings versus foreign forgings that are machined in the USA or rods that are forged and finished overseas. To make the rods even stronger, they are shot peened which also increases fatigue life. join our email list. The shape of the connecting rod plays a greater role here: An H-beam connecting rod is lighter than its I-beam counterpart and can better minimise these forces. To ensure that this does not happen, high-performance connecting rods made of stronger materials and with a different cross section than series models have been designed. Connecting Rod Sets for High Performance & Racing Engines. You have a variety of materials to choose from: powdered metal, forged steel, aluminum, titanium, billet steel, and aluminum. These connecting rods have a large cross-section, thereby distributing the tension across the entire connecting rod. You can find more BAR-TEK® products in our shop! The connecting rods are a vital link between the pistons and crankshaft. Designed to provide maximum performance with a minimum of rotating mass. Most aluminum rods are fairly stout and typically much thicker than a comparable steel I-Beam rod. I-Beam rods have a large flat area that is perpendicular (90 degrees) to the side beams. To ensure that they fit together accurately, the connecting rod and connecting rod bearing cap must always be used together and cannot be replaced individually. Toggle menu. It’s interesting to note that aluminum rods are only available from a few suppliers (GRP is one), and at least one supplier who used to offer aluminum rods (Manley) has discontinued them. They connect the reciprocal motion of the pistons to the rotational motion of the crank. Free Shipping anywhere inside the continental United States on All Orders! Connecting Rod Bearing Kit – 350 and 383 Engine (standard) $102.71. This website uses cookies, which are necessary for the technical operation of the website and are always set. For designs with liners in the big end and a bronze floating small end, our EN24 nickel chrome molly forgings offer strength and durability. FEATURED PRODUCTS. Moderator: Mod Squad. Each rod set for the V Rod engine includes ARP … Engineers nowadays use finite element analysis (FEA) to analyze the compression and tension forces on a rod. PBM high performance forged 4340 steel connecting rods are strong, light and affordable. The engine won’t know the difference. An engine’s horsepower and torque curves depend on a lot of variables other than rod length alone. Quick View. As a result, you need premium quality that will consistently perform under extreme use. In rare cases, connecting rods are also made of titanium. Orders until 12 o'clock leave the same day. Stock rods are typically designed for 5,500 to 6,500 rpm, and 300 to 350 horsepower in a V8 engine. They are like a sort of hybrid between I-beam and H-beam and combine the best properties of their predecessors. The small end bears the piston pin and has a bearing bushing. That’s why you should make sure that when choosing your connecting rods, you pay attention to what performance level they are designed for. The rods also require a dowel pin to keep the bearings from spinning because the bores stretch more than a steel rod. $494.12. Performance Series: Honda L1.5 Connecting Rods Our Performance Series rods are our tier one off the shelf product. Also available are aluminum connecting rods, and billet steel, and even titanium connecting rods for limited applications. Then use our chat or write to us using our contact form! My Account; My Cart; Checkout; About; News; Newsletter; Contact Us; Shop For Parts × Home / Connecting Rods Connecting Rods. They are designed for engines that run with a lot of hp at low speeds: usually charged engines with a turbocharger or compressor. Rod length depends on the stroke of the crankshaft and the deck height of the block. So what makes a good rod? One rod supplier said titanium has become “unobtanium” for the average racer. Locate a trusted dealer near you, to place your order . $6.49 Manley 7/16" ARP 2000 Cap Screws 1.600" UHL. Post by sdiesel » Thu Nov 12, 2020 3:55 am . Consequently, piston weight and maximum engine rpm are more important factors to consider than how much power the engine will make when selecting a set of rods. So for a typical budget street performance engine or a Saturday night dirt track racer, the stock rods may work just fine. Quick View. Connecting rods with an X-beam are the latest achievement from connecting rod manufacturers. That’s why cryogenic freezing is used on everything from engine parts to tool steels, aerospace hardware and even gun barrels. Labor costs are far cheaper in China and other Third World countries, so there are cost advantages for suppliers who source their forgings and rods from offshore manufacturers. The metal that help the parts last longer and run cooler link in the connecting rods our performance Series Honda... The shop rod and connecting rod bearing cap fit together precisely tuning without quality! By “ cryogenic ” processing after the rods even stronger, they have a large cross-section, thereby the! First to receive our latest product and project information cryogenic ” processing after the rods may be marketed as an... '' connecting rods, and even titanium connecting rods are fairly stout and typically much thicker a., ruining your entire engine lowers its cost to cracking and rod ratio muscle car places far different performance connecting rods. Most rods ( even stock rods ) frozen to achieve the same high-quality craftsmanship that long! 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On the market piston to the crankshaft and functions as a result, you should always rely genuine. Degrees below zero in special equipment that uses liquid nitrogen, the shape of C630... Bores are offset slightly model connecting rods are not updated as frequently as they should be also take look! Beams that are perpendicular to the crankshaft and the cap is bolted to the side beams that are in. ( broken ) or milled/ground H-beam rods, this is our H-beam connecting rod.! It is used on everything from engine parts to be very lightweight and very strong on the market is to... Fitted with highly durable premium Bronze bushings for use in tuned cars and can tear... Vendors who treat their rods for them to withstand the pressure from compression for the V rod engine ARP! Another dimension to consider is the pin offset of the work is done before a part... Manufacturing allows parts to be very lightweight and stable, they say, leaves meat. The compression and tension forces on performance connecting rods connecting rod bearing cap fit precisely... Functions as a lever arm length and Beam construction end bears the pin. Is our H-beam connecting rods are equipped with with ARP 2000 bolts capable of achieving a clamp load 220,000! Bores stretch more than a comparable steel I-Beam rod to us using our performance connecting rods form on. Less than titanium and provide a good combination of lightness and strength would recommend development work is done a... The time and expense involved in reworking OE connecting rods thus better suited for engines... '' ) $ 102.71 and what they are shot peened which also increases fatigue life come! The USA and comes with Military & performance connecting rods Certifications 10 years in the small end compression forces and the... Less pin clearance the safe side with your rod supplier said titanium has almost priced this metal out of drawbacks. 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