head gasket

  1. Banshee.E82

    Technical Need Help Figuring out parts to replace in engine rebuild

    Hello, I'm Nick and I am currently trying to figure out everything that I will be needing to rebuild my engine(N54 2008 135i 8 Bolt Manual @174,XXX Miles) to OEM Spec. I am Planning to get Hydra HP650 Turbos and aim for 550hp with headroom. To my understanding, the stock n54 motor with no...
    • Banshee.E82
    • Thread
    • bearings block engine head head gasket head studs hp650 n54 pistons
    • Replies: 4
    • Forum: N54
  2. AK135i

    External head gasket leak?

    Not exactly having good luck here, finally figured out my coolant leak. How often does this happen to n54's? I know blowing head gaskets arent too common but an external leak at the head has me surprised. The car was compression checked and cyl 1 was 18% down and the rest were fine, but no...
    • AK135i
    • Thread
    • bmw n54 coolant leak external head gasket leak head gasket
    • Replies: 13
    • Forum: N54
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