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stem seal

  1. Valve guide seal Mystery?

    Engine Repair, Diagnostics & Rebuilding
    We have been freshening up a 76 2.0 litre head and after grinding we found this stem seal issue! The guides are not stock, or appear to be Centerline! They are for a 9mm stem! The boss or top is only 10MM OD. Much thinner then the 11.5 stock guides. Therefore the seal fit is loose and...