What actually is a tuning belt wrap kit?

Thomas Wachsmuth August 18, 2022 Tips, products, information & Co., Tuning Wiki

Reading time 4 Min.

In connection with engines with supercharging one hears from time to time the so-called "Tuning belt wrap kits". But what is such a thing? Belt wrap kit actually? A belt warp kit can cause a drop in performance prevent and optimized the standard belt drive of the engine. Such a set is particularly popular with a performance-enhanced compressor engine. The OEM belt drive of the engines for the compressor is often designed to be borderline as standard. If you then drive an engine that has a different compressor ratio (for example by means of a larger pulley or a twisted compressor wheel), then the factory belt quickly reaches its limits and the performance may even deteriorate. Why? Because there is a possibility that Slip on the compressor wheel, which not only reduces performance but also increases wear on the compressor belt. The phenomenon is often accompanied by a typical “Squeaking noise' when switching on the compressor.

Squeaking noise as a sign

What actually is a tuning belt wrap kit?

Through a Belt wrap kit, which is usually at least with an additional idler pulley is supplied, the wrap angle on the compressor wheel and on the pulley increased. The effect of this is that belt slippage when the compressor's magnetic clutch is activated is a thing of the past. Such a set from a well-known provider is usually included all necessary fasteners (Belt wrap kit holder, pulley for the aggregate belt, pulley for the compressor belt, torx bit, screws and washers, ribbed belt for the compressor) supplied for assembly. You should definitely pay attention to the scope of delivery in order to ensure perfect harmonization of the components. The use of the Belt Warp Kit increases performance on vehicles due to the Change of compressor to crankshaft pulley ratio, the force to be transmitted to the compressor pulley and this improves it responsiveness and the Efficiency.

for vehicles from Mercedes-Benz

Almost exclusively for modified vehicles from the company Mercedes-Benz (SL55 R230, E55 W211/S211, CLS55 C219, S55 W220/V220, CL55 C215, SLR C199/A199, CLK DTM AMG C209/A209, G55 W463) Belt wrap kits are available with the M113KE55ML or M155KE55ML engines. And a belt wrap kit can even be found when using the Compressor to crankshaft pulley Use. In the case of Mercedes-Benz vehicles, the installation of a belt wrap kit is required for compressor pulleys smaller than or equal to 80 mm recommended. Installation usually takes little more than an hour.

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