Aluminum Connecting Rods

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Aluminum Rods

Read more about aluminum rods.

 

ALUMINUM CONNECTING RODS

The image above is an example of a fully machined billet aluminum rod engineered for large displacement V8 applications such as GM, Ford, Mopar, where long stroke and large bore are the norm. Commonly used in racing venues gaged in quarter mile increments, these bad boys are increasingly finding a home in less-aggressive, more service-oriented streetrod engine programs.

Solid Beam Design

Available in all makes and sizes, these units are engineered to meet the most extreme conditions found in drag racing today where maximum boost and exotic fuels are often mandated. Rods of this configuration are destined for the most brutal of environments, affirmation as to why the style of beam pictured above has become the number one choice for those who excel at these very demanding racing programs.

Pauter aluminum rods can be purchased in standard dimensional configurations common to length, B.E. / S. E. diameters and widths or made to order through customer specified dimensions and or type of use parameters. Our well engineered tooling and flexible computer programming have made it possible to offer virtually any custom aluminum rod of somewhat comparable physical size at the same cost of its OEM-dimensioned counterpart. Simply put, no extra charge for customs.
Our aluminum rod product menu currently includes a breakdown of the following makes:
GM / Ford / Honda / Mazda / Mitsubishi / Mopar/ Nissan /Toyota / Subaru / VW

The list above is not a complete lineup of the rods we offer but a representation of those most commonly ordered. If you don’t see your particular brand call or email… it’s very likely we can help.
Recently, we have experienced an increased interest in aluminum rods for the small displacement 4-cylinder enthusiasts, a performance market previously more inclined to steel units. This was mainly due to size vs fitment limitations, a valid concern for sure but advances in design and materials and a willingness of engine builders to do what’s necessary clearance-wise to accommodate the often bulkier aluminum parts in order to save weight may explain the change in attitude, especially when power demands dictate a rod mass not conducive to the use of steel.

BTW If you’ve ever wondered what it takes to get a four or six-cylinder door-slammer deep into the mostly V8-dominated indexes… examine the rod pictured above, a perfect example of developing trends in popular small displacement platforms reaching performance levels never imagined by OEM engineers.

For our many loyal ACVW friends, we’ve reintroduced an all-aluminum part engineered for use in today’s popular air-cooled market offerings. Years ago (1980′s,) engineers at Pauter developed an extremely successful aluminum rod specifically designed for this once very widely accepted, street, drag, off road, oval, midget and road racing platform. During the engine’s heyday thousands were consumed in builds based on longer than stock strokes and considerably larger bore. In these particular engines, most, but not all aluminum rod applications forced the implementation of a physically smaller steel rod cap, rather than a larger aluminum part for reasons of fitment in the tight confines of the factory OEM 1600cc engine cases. With the availability of newer redesigned aftermarket engine blocks as basis for today’s large displacement builds, the steel-capped units are no longer a necessity. For what it’s worth, the bi-metal (steel cap/ aluminum beam combo) is not something we came up with but a borrowed concept originally, as far as we know, found in motorcycle technology brought decades earlier by European manufacturers Triumph and others. What may surprise you is that many of those same vintage aluminum rods are alive and well today lending truth to the fact that aluminum when used as a primary material in connecting rod applications can be relied upon for other than quarter mile use only.
Our six-cylinder product line with regard to the connecting rod market, both domestic and import has realized the largest growth in terms of customer interest and sales of any the big 3 engine platforms (4, 6 and 8 cylinder). It seems as though six-cylinder engines have found a place in nearly all models of every automakers inventory either inline, flat or “v” configuration they have become the engine of choice for a huge segment of new generation car owners. it should not be surprising that along with this growth is a smaller but parallel increase in those who choose to favor this popular platform as a means to their personal automotive performance goals.

When it comes to six-cylinder con rods steel has primarily been the dominant choice of materials but as of late there has been a groundswell of interest in aluminum, Powerful six-cylinder engines such as Toyota 2JZ, Nissan RB-series, Honda J-series even some of the older inline GM (cast crank) products all excellent candidates for aluminum when power demands vs rod weight are serious concerns.

As you know big end concentricity is an extremely critical factor related to service life of any type of connecting rod, to that end and with regard to our aluminum rod line, the machining of inter-locking serrations into corresponding mating surfaces of rod and cap is our standard procedure. This method of positive alignment of cap-to-beam segments is key to maintaining repeatedly accurate, concentric housing bores under severe load conditions.
As with most aluminum rod manufacturers our method of bearing retention is achieved by means of radial grooves to accommodate factory tangs for lateral (side-ways) locating as well as brass dowel pins to control radial (spin) movement.
An important point to be considered when aluminum rods become a part of your engine program is the necessary modification to rod bearings as related to dowel pins and their role in retaining bearing placement. As with most aftermarket aluminum rods this aspect can be problematic if, in your application, factory modified bearings are unavailable, in which case we can provide rod bearing sets pre-drilled to suit your specific needs.

Pauter Rod Specification Form (Live)

Pauter Rod Specification Forms (Static)

For further rod specification (with regard to weights, dimensions, bores, etc.), download and fill out one of the above forms.

INTERACTIVE 3D MODELS

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Connecting Rod Catalog
Frequently Asked Questions
Technical Rod Information