Conrods for Porsche from Albert Motosport

Connecting rods for Porsche from Albert Motorsport

dear all,

For many decades we have been supplying high-strength sports and racing connecting rods for Porsche to our customers worldwide.

How are our connecting rods made? What material are Albert Motorsport connecting rods for Porsche made of?

Albert Motorsport connecting rods are made from EN24 / 817M40 steel.

This is a high-strength #nickel-molybdenum alloy steel according to BS standard with very good mechanical properties.

EN24 / 817M40 steel is supplied in the heat treated condition, making it ideal for the manufacture of camshafts and #connecting #rods:


EN240.35-0.450.10-0.350.45-0.70≤ 0,050≤ 0,0500.90-1.400.20-0.351.30-1.80
817M400.36-0.440.10-0.400.45-0.70≤ 0,035≤ 0,0401.00-1.400.20-0.351.30-1.70

The production of our connecting rods takes place in the following work steps:

The Steel - Delivery:

After manufacturing the EN 24 steels in bar stock, these bars are delivered to our fabricator. There they are cut to a dimension precisely calculated for the manufacture of the future connecting rod and heated electrically by induction for the upcoming forging.

Electrical heating by induction:

During inductive heating, eddy currents are induced in the metal by an alternating electromagnetic field, and these are converted into heat as a result of the losses occurring during the re-magnetization.

In simpler terms, the flow of current around the metal, in this case our steel rod, heats the workpiece.

The forging process:
The workpiece, which has now been red-annealed by induction, is placed in a connecting rod blank and forged at a pressure of 300 - 600 tons. Forging gives the round steel the raw shape of the future connecting rod for our Porsche.
Forged connecting rods:
Depending on the application requirements for the future engines, the forged connecting rod blanks are now stored and processed further if necessary.
The grinding process of the flanks and surfaces:
The future shape of the connecting rod is then determined by the grinding process. H - connecting rods, which we use for our Porsche, get the lateral notches in this operation. The surfaces of the lateral bearing fits are also ground.
Cracking or sawing the connecting rods:
The slightly oval lower connecting rod bearing is now sawn centrically, the supporting flanks are ground to fit and the later anti-twist security notches for the connecting rod bearings are already made.
Drilling the connecting rod halves:
After the connecting rod surfaces have been ground, the holes for the bearings are now drilled into the connecting rods. Then the connecting rods are sawn and the contact surfaces of the bearing surfaces are ground.
Shot peening of the connecting rods:
The connecting rods that have been sawn and prepared for screwing are now destroyed on the surfaces using the shot peening process. The smallest markings are compensated in this way. At the same time, the surface of each connecting rod is protected against notch effects and sealed.
Inserting the connecting rod numbers:
To avoid assembly errors, the respective connecting rod halves are now numbered. This ensures that the same connecting rods and their lower parts are always assembled together during assembly.
For some connecting rod types, the numbering also marks the installation direction of the connecting rod in the engine, for example.
Insertion of the bronze bearing in the connecting rod eye:
The connecting rod eye accommodates the smaller bearing of a connecting rod. A connecting rod bushing or connecting rod bearing made of bronze is pressed into this small bearing. The material is a high-quality stable bronze with the following properties: Al (aluminium): 8.5-10.0, MN (manganese): 1.0-2.0, Fe (iron): 2.0-4.0, (Cu (bronze)).
The finishing touches, the honing of the bearing surfaces:
The last step before measuring and checking the quality of the connecting rod bearings is honing. During the honing process, the bearing surfaces are finely ground in the cross ship in order to remove even the smallest bumps and to provide the future connecting rod bearings with a secure hold.

The ready-to-install connecting rods for your Porsche:
At Albert Motorsport, we use sports connecting rods primarily in the construction of Porsche racing engines. In recent years, our connecting rods have also been used more and more frequently for the normal repair of serial bogs. If connecting rods have been damaged as a result of engine damage or have to be replaced, this is not only a recommended measure in terms of costs.

Conrods from Albert Motorsport are below the series - OEM prices in terms of costs. In addition to higher strength compared to series connecting rods, they also offer lower weight and lower weight tolerances of less than 1 gram within a connecting rod set.

With Albert Motorsport connecting rods, you have lower oscillating masses that are moved, and therefore better acceleration and lower vibrations due to weight tolerances. All this is endowed with better engine performance and smoother engine running.