Ed MD

Year: 1985
Make: Porsche
Model: 928
Cont. Porsche Models: 928 (all)
Mileage (numbers only please): 104000
Options (Please check ALL which apply): Air Conditioning, Alarm System, Antilock Brakes, Cruise Control, Foglamps, Intermittent Wipers, Leather Seats, Power Brakes, Power Door Locks, Power Steering, Power Windows, Sunroof
Color: Porsche Red
Price (no $ sign please): $17500
Private or Dealer Listing: Private Listing
Location (Region): South
Body Style: Coupe
Transmission Type: Manual - 5 speed
2 or 4 Wheel Drive?: 2 Wheel Drive
Engine Type: Fuel Injection
Stereo System: AM-FM CD

1985 928 Euro S2, 5 Speed
Indischrot - Schwarz Interior
Prototype 16V Twin Screw Supercharger System by 928 Specialist

• 18" Turbo Twist Wheels - 8.5" F / 11" R
• Yokohama ADVAN 245/35-18 and 295/30-18 Tires
• 928 Specialists Front and Rear Adjustable Sway Bar System
• Bilstein Sport Shocks
• Front and Rear Custom Tie Downs
• 928SP Short Shifter
• 928SP Stainless Door Sill Plates
• 928SP Windshield Banner
• Carbon Fiber X-Brace
• MSDS HPC Coated Headers
• 3 1/2" Custom Exhaust System
• MOMO "Street Racer" Seats w/5 point Corbeau Race Harness
• Factory "Sport" 930 Type Steering Wheel
• GTS Shifter ****
• Aluminum Interior Trim
• White Colored Gauge Face Kit
• Custom Aluminum Brake/Clutch and Accelerator Pedal Pads
• HAWK High Performance Street PLUS Brake Pads
• 55 Bar "Racing" Rear Brake Regulator
• Brake Speed Bleeders
• Stainless Steel Brake Lines
• 5 lb.(338 RWHP), 8 lb.(353 RWHP), 10 lb. Pulleys
• “Shark Tuner” Chips
• Adjustable Fuel Pressure Regulator
• VDO Fuel Pressure Gauge
• A-Pillar 3 Gauge Pod
• Air/Fuel Ratio and Boost Gauges
• Race Radiator w/Dual Electric Fans
• Aluminum Front Belly Pan
• Lightweight Hi-Torque Starter
• Optima Dry Cell Battery
• 4 point Race roll Bar
• Custom Fire Extinguisher Roll Bar Mount w/Extinguisher
• HID Driving Lamps
• Electric Crankcase Vacuum Pump
• 2 Moroso Air/Oil Separators w/Oil Return Pump
• Moroso Exhaust Evalcuation
• Pioneer Car Stereo CD, MP3, USP, Bluetooth
• Pioneer TS Series Speakers

New master and slave cylinder for clutch, new AC condensor, dryer w/R12 recharge, new shifter bushings, new driver door latch, new wide band O2 sensor, new floor and rear mats, new rear hatch cover and netting
Rear seats deleted, sunroof motor removed, rear wiper and motor removed, spare tire removed (parts stored)
ALL fluids changed before and after Texas (March 2011)
Additional set of front and rear brake rotors and pads
Federalized side reflectors removed, holes welded and quarter panels respayed



It's a great car, Runs very strong without any issues. With the 5 lb. pulley its very streetable, and its very easy to swap out to the 8 lb. pulley for track events.

Email me with any questions and I have lots of pictures if you want more.
eemeier@aol.com

Ed M

911 Crazy

Great looking car. PM sent.

Pfc. Parts

Ed, did I read the dyno on this car right, I think it shows peak output of 350 SAE HP? I have the NA version of this car and I'm pretty sure the stock numbers for the 16 and 32V heads are 309 and 292 respectively, so I'll conclude the supercharger adds approximately 40HP over stock?

I know these numbers are from the 2011 prototype, have you done any tuning since?

Thanks,

SeanR

Car is long sold and not in a working condition at the moment. Contact Andrew Olsen (AO) who is the new owner.

Pfc. Parts

Hey Sean, thanks for replying. I more or less guessed the car was long since sold, but I am interested in the performance numbers anyway, in fact I'm just about to post a "Turbo or Supercharge?" thread to get some feedback on the numbers people have seen.

I've almost finished restoring my '85 and now I'm trying to decide what to do next; either build the donor car for the track or part it out and buy a 944 (and build it for the track). I have some idea what I can get out of a 944 3.0L turbo so I can do some rough power/weight calcs for it, I don't have much on a blown 928, which is why I'm digging through these older reports.

Pfc. Parts

Sean, you bring up another good point here, which is how to compare these different numbers from all the sources. It was good to see a dyno chrt for this build, the numbers I used to compare it with were the ones published by Porsche, which you more or less impugne with your post.

Going through this exercise it's more important for me to use consistent numbers than it is to use accurate ones if you get my drift; I'm trying to understand the relative performance gains possible using the different approaches rather than absolute numbers.

So I think using your figure of 288hp at the crank (vs. Porsches claim of 309) we could say this build provided a 21% power increase of the standard Euro 16V at the crank.