What is the proper torque sequence for a Subaru valve / rocker cover that has an 8 bolt pattern?
1 Answer
The sequence shown below works for the (XV) Crosstrek, Impreza, and Forester (and possibly others) if it has the 8 bolt pattern for the valve cover. Tighten in order from 1 to 8.
Good videos for reference: https://youtu.be/nB-ls4cUkic and https://youtu.be/evk8PNZG8c8
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1I'm not familiar with this particular engine but these are usually shoulder bolts. The "shoulder" contacts the cylinder head and there is often a rubber washer that provides the pressure against the cover to seal the gasket. Greater torque does not provide greater pressure on the valve cover. Generally you just end up stripping the threads in the head. So these bolts often have low torque values because that's all that is needed to secure them.– jwh20May 24, 2022 at 19:51
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1They are shoulder bolts. Use a 1/4" ratchet and tighten until they are firm.– MJHMay 24, 2022 at 21:56
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1Better get some idea what 4.7 ft.lb. feels like , as commented it is next to nothing. Over tightened rocker covers and pans are a common problem with beginners. The gaskets extrude and leak. May 25, 2022 at 20:49
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1I'm familiar with shoulder bolts in valve cover usage. While it's a seemingly-trivial amount of torque, it works just fine...provided the rubber washers are in good condition. May 26, 2022 at 7:39