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Home >> Lincoln >> 1991 >> Mark VII LSC >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> INTERCOOLER Inlet & Outlet Tubes >> 3.8L Supercharged >> Installation

3.8L Supercharged: Installation

  1. Ensure all sealing surfaces are clean. Install Teflon tape to circumference of sealing surfaces of intercooler inlet tube. Apply tape 1/8" from inner diameter, and overlap ends 1/4". Apply Anti-Seize Compound (ESE-M12A-4A) to sealing surface and threads of SC outlet adapter collar.
    CAUTION: DO NOT stretch Teflon tape during installation.
  2. Install inlet tube. Install stud into alternator/power steering pump bracket. DO NOT damage sealing surfaces of inlet tube. Install push-on nut on stud enough to hold inlet tube. Ensure inlet tube is free to move for alignment of sealing surfaces.
  3. Hand tighten supercharger outlet adapter collar on inlet tube. Install and slightly tighten inlet and outlet tube-to-intercooler nuts. Ensure tubes are free to move at sealing areas. Using adapter, tighten supercharger outlet adapter collar to 148 ft. lbs. (200 N.m). Wait at least 10 minutes, and retighten adapter collar to 148 ft. lbs. (200 N.m).
    CAUTION: Supercharger outlet adapter collar must be retightened after 10 minutes as Teflon tape will form to sealing surfaces.
  4. Tighten inlet and outlet tube-to-intercooler nuts to 15-22 ft. lbs. (20-30 N.m). Ensure clamping connectors on inlet and outlet tubes at intercooler are parallel to intercooler surface. Tighten inlet tube-to-alternator/power steering bracket nut to 30-40 ft. lbs. (41-54 N.m). Start engine and check for leaks.


  1. Install Teflon tape to circumference of sealing surfaces of outlet tube. Keep tape close to inner diameter, and overlap ends 1/4". DO NOT stretch tape during installation or a leak at sealing surface may develop.
  2. Install outlet tube underneath power steering pump bracket assembly. Install power steering bracket and stud retaining nut. Tighten nut to 30-40 ft. lbs. (41-54 N.m).
    CAUTION: Carefully install outlet tube to avoid damaging sealing surfaces.
  3. Remove bolt installed in step 5 during removal. Install power steering pump bracket-to-cylinder head bolts, and tighten to 30-40 ft. lbs. (41-54 N.m).
  4. Install power steering pump bracket brace-to-water pump retaining studs. Tighten nuts to 15-22 ft. lbs. (20-30 N.m). Install outlet tube on lower stud on alternator/power steering pump bracket.
  5. Install push-on nut to hold outlet tube on pump bracket. Ensure outlet tube is free to move for alignment of sealing surfaces. Install outlet tube clamping connector over intake elbow assembly studs. Install and tighten nuts to 15-22 ft. lbs. (20-30 N.m). Ensure clamping connectors on outlet tube-to-intake elbow are parallel to intake elbow surface.
  6. Install nut on stud of alternator/power steering pump bracket. Tighten nut to 30-40 ft. lbs. (41-54 N.m). Install outlet tube-to-cylinder block support bracket. Tighten bolt to 30-40 ft. lbs. (41-54 N.m).
  7. Tighten support bracket-to-front of cylinder block retaining nut to 15-22 ft. lbs. (20-30 N.m) and bolt to 52-70 ft. lbs. (71-95 N.m).
NOTE: Disassembly of supercharger unit may void warranty. Supercharger is serviced by replacement ONLY.
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