porschefanatics

Independent parts atlas sources attached

Search
Menu

Engine · 993-ENG-COOLING-IMPELLER-ALSI10MG-F0-0001

993 engine cooling fan — archived Carrera F0 concept

ConceptNot authorised until engineering review

This folder preserves the exploratory Carrera F0 concept: twelve swept blades, a simplified hub and a peripheral ring. Its synthetic 280 mm geometry does not reproduce the Porsche rotor, and integration with the F0 housing fails. It is no longer the baseline for the current design. The separate reconstruction dated 28 September 2026 studies the 993 Turbo M64.60: an eleven-blade 96410601522 rotor, ventilated cup, ribs and separate hub, targeting a PMB / Classic Retrofit 240 A alternator. This reconstruction remains partial: its interfaces, airflow, material and mechanical integrity are not validated.

Catalogue status card for 993-eng-cooling-impeller-alsi10mg-f0-0001: no part geometry depicted.
Archived synthetic Carrera F0 study; not the 993 Turbo fan. The generic rotor views were withdrawn to avoid confusing the two designs. Status card; no part geometry depicted.

The design

Vehicle
Porsche 993, 1994–1998
Variants
993 Carrera fitment to confirm, 964 shared component
Porsche part numbers
96410601531
Category
Engine cooling fan impeller
Geometry basis
Mixed
Preferred process
Not chosen yet
Other candidate processes
Laser powder-bed fusion (metal printing), Direct metal laser sintering (metal printing), CNC machining, casting
Material
EOS Aluminium AlSi10Mg T6 for comparison; commercial part declared only as unspecified aluminum
Material standard
DIN EN 1706 EN AC-43000 and ASTM F3318 for the candidate; program-specific rotating, HCF, balance and overspeed specification to be contracted

Known limits

  • F0 concept archived as a design reference. F0 results must not be transferred to the new rotor.
  • The 300 x 300 x 150 mm is a commercial envelope, not an impeller drawing.
  • The 0.94/0.948 kg masses are commercial claims with no protocol and no weighing boundary.
  • The aluminum material has no grade, no process and no certificate; AlSi10Mg remains a candidate.
  • The 280 mm diameter, the 80/30 mm hub, the twelve blades and the ring are synthetic.
  • The previous F0 housing has a synthetic 252 mm throat: the computed radial clearance is -14 mm and the integration fails.
  • The 10,000/12,000 rpm cases, flow, pressure and temperatures are regressions with no 993 authority.
  • The centrifugal and modal screens pass, but the thermal screen fails; HCF, balance, flow and containment remain non-computable.
  • The STEP proves only a re-readable BREP; no manufacture, rotation, installation or start-up is authorized.

Post-processing it would need

  • Orientation, supports and access between blades to be qualified
  • Stress relief then T6 with quench and distortion monitored
  • Mandatory HIP to be decided by the HCF/defect card, not by habit
  • Machining of the hub, bore, faces and balance correction datums
  • Controlled finishing of the blade roots with no notches and no trapped media
  • Corrosion protection compatible with temperature and fretting
  • Two-plane dynamic balancing in the final condition

What a supplier would have to provide

  • Traceable machine, parameters, orientation, supports, powder, recycling and batch
  • Oriented coupons with tensile, HCF, fretting and hot corrosion tests
  • Notched specimens and blade-root witnesses in the final surface condition
  • Full CT, FPI and metallography with zoned defect criteria
  • Metrology of hub, bore, runout, concentricity, blades, clearance and mass
  • Proof of balance, overspeed, vibration, flow, blade loss/containment and endurance

Sources