Turbocharged engines are becoming ever more popular for passenger cars and this has presented questions about the materials used for the components which are being placed under increased pressure.

Here at Viper Performance we only use the highest quality silicone in our turbocharger hoses. A report made by a senior industry specialist in the USA highlights the advances made in Fluorosilicone compounds for transportation applications. The report specifically concentrates on the demands on Silicone in turbocharger hoses. The studies carried out in this report indicate the differences between varied silicone formulations.

With the popularity of diesel engines growing they have become more common in smaller cars, with limited space under the bonnet for heat dissipation. It is quite common to see continuous temperatures of >200°C. This makes replacing the organic rubbers and thermoplastics with silicone rubber essential. In tests some silicone formulations show much less tensile loss and elongation loss when exposed to high temperature than others. Highlighting that not all silicone compounds are as effective at the job in hand. When it comes to temperature resistance selecting a high quality silicone is essential.

Another key requirement is for the turbocharger hose to survive contact with hot oils. The report in question shows tensile strength loss of as much as 80% in some cases. Other silicone formulations showed just 30% tensile strength loss, which again indicates the large performance gap between different silicone formulations.

The report concludes by recommending specific fluorosilicone rubber formulations that are capable of meeting the demanding requirements for turbocharger hose liners and other transportation applications. In essence, ensure that you choose wisely when purchasing silicone hoses, finding a supplier who can offer you high quality as well as competitive prices. You can read the full report here.

Here at Viper Performance we have also performed documented testing on cheaper quality hoses that we have found on the market. Viper’s video on youtube shows a comparison in hoses and highlights on what to look for and avoid.

Reference:  Michael A. DiPino. (2006). Advances in Fluorosilicone Compounds for Turbocharger Hose Liners and other Transportation Applications. Available: http://www.dowcorning.com/content/publishedlit/45-1493-01.pdf. Last accessed 31st March 2014.