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Home > 911 Catalog911 (1974-89) >  Pelican-Recommended Porsche 911 Upgrades > Chain Tensioner Update

Carrera Chain Tensioner Update Kit, 911 (1969-83)

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  One of the most well-known flaws in the pre-1984 911 engines is the chain tensioners, which can suddenly collapse. Failed tensioners cause a valve timing to change, which often results in a violent, high-RPM collision of the valves and pistons, which causes catastrophic damage to the engine. In 1984, with the introduction of the 911 Carrera, Porsche replaced the standard spring loaded tensioners with hydraulic pressure-fed tensioners. The Carrera Pressure Fed Tensioner kit includes 2 chain covers, oil lines, tensioners, and all the gaskets and hardware that you need to perform this upgrade. This kit can be installed on all 911 and 911 Turbo motors starting in 1969. Some early cars require an oil line adapter, and smog pump cars require replacement of two short studs with longer ones. In addition, to get the proper fit, you need to upgrade your chain sprocket idler arms, or install chain sprocket wheel spacers. NOTE: Chain housing gaskets are indeed included with the kit, and are placed in-between the two large pieces of cardboard that are taped together. This is done to protect the gaskets - do not throw the cardboard out when you get the kit (many people have done this), ALSO early 911s 1967-72 will need two longer studs part number 999-062-255-02. Check out this Click here to view a detailed, step-by-step technical article on updating your chain tensioners  
Chain Tensioner Kit Brand: OEM

No Longer Available


Chain Sprocket Wheel Spacers (2 req'd, sold individually, install behind idler arms), 1969-79 Brand: Canyon



Oil line adapter kit (1969-73, non-CIS) Brand: OEM



Oil line adapter kit (1973-1/2 CIS - 1989) Brand: Rauch & Spiegel



Smog Pump Stud (longer version), M8 x 65 (2 per car, sold individually)

No Longer Available


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