Supercharged 1987 Porsche 928S4
Price: $22,000 OBO
Conact Randy Page at randy_page@yahoo.com
General Information
1987 Porsche 928S4
80,500 Miles
Automatic
Transmission
Black Exterior/Black Interior
VIN:WPOJB0925HS861788
Option
Codes:
CO2: Equipped with catalytic converter
158: Radio,
Blaupunkt Reno SQR 46 (upgraded, see below)
302: Type Designation on
Rear (was not there when I purchased the car)
418: Side Protection
Mouldings
490: Sound System (upgraded, see below)
494:
Additional Amplifier (upgraded, see below)
650: Electrical Sliding Roof
(see issues below)
I purchased this car in early 2000 from a gentleman in Charlotte, NC.
At the time, it had around 47,000 miles and was basically stock
(just an RMB and turbo wheels). The car was in excelent condition,
it just need a few performance upgrades ;) After driving the car stock
for about a year, I started working on the upgrades that are
described below (a five year process). I did the vast majority of this work myself, with
a lot of help from folks on Rennlist, the big three, and
especially Tim Murphy.
I have tried my best to accurately describe this car, and
have attached a lot of big pictures so you can get a good look at it (sorry if
the download is slow.) I really hate to sell it, but I rarely drive
it anymore and could put the funds to better
use.
Engine Upgrades
·
Murf
Supershark Supercharger Kit
o
o
Vortech
polished air/water intercooler.
o
Polished aluminum pipes.
o
Vortech
polished blow-off valve.
o
Vortech
Fuel Management Unit.
o
Custom
cooling fans.
·
Bosch
rising-rate fuel pressure regulator.
·
Nology
spark plug wires.
·
Custom
dual exhaust
o
2.5”
mandrel-bent pipes.
o
X-pipe
with two O2 sensor bungs.
o
2
High-flow CATs.
o
2
Magnaflow stainless mufflers.
o
Chrome
exhaust tips (looks similar to 928GT tips)
·
Innovate Motorsports Modular Tuning System LC1 wideband O2 sensor
with XD-16 A/F ratio gauge.
o
This
sensor is installed in the second O2 bung on the x-pipe, and only powers the
XD-16 gauge.
·
Autometer vacuum/boost gauge.
·
Summit
liquid-filled FP gauge.
·
Parallel kick-down switch.
·
Powder-coated (almost chrome) parts
including:
o
Intake
manifold
o
o
Waterpump housing
· GTS oil pan baffle.
Wheel, Brake & Suspension
Upgrades
·
Eibach
progressive rate springs and Bilstein shocks.
·
Ott
droplinks front and back.
·
Swaybar
bushings.
·
Cross-drilled rotors.
·
Stock
calipers painted red.
·
Porsche
997 19” wheels (8” front and 11” rear)
·
Continental Sport
Contact Tires with about 90% tread remaining (235/35/ZR19 front and 295/30/ZR19
rear)
Interior Upgrades
·
Momo leather
steering wheel.
·
Jager
shifter and leather boot.
Audio Upgrades
· MB Quart Speakers
o Front: Mid range and tweeters fitted into stock locations with crossovers installed in the doors.
o Rear: Mid range with tweeters. Crossovers are installed within the factory openings. These are located in the back seat area.
· JL Audio Subwoofer. I do not know the model number, but I believe it is 8".
· Amplifiers:
o Subwoofer: Audiobahn A1502DP.
o Front: Audiobahn A1004DP.
· Notes
I replaced all the major audio components less than 2 years ago, however something is not working perfectly. I purchased all the components new, but there is a bit of a distortion in the sound. I believe it is related to the wiring, but cannot be sure as I have not really spent the time to debugg this issue.
Other Major Maintenance &
Modifications
·
Griffiths Kuehl
upgraded A/C condenser (works great.)
o
Running
R134
o
Upgraded/replaced all major hoses, o-rings,
etc.
o
Replaced expansion valve.
·
GTS
teardrop mirrors (heated and electric)
·
Griffiths “HO” power steering pump and rebuilt
rack.
o
Also
replaced all hoses and the reservoir.
·
Porsche
OEM fluid-filled motor mounts.
·
Oil pan
gasket.
·
All
other major gaskets and hoses including:
o
Intake
gasket
o
o
All
hoses including vacuum, radiator, etc.
·
O2
sensor, temp sensors, mass air meter, knock
sensors.
·
Rebuilt
cruise control unit.
·
Ignition coils.
·
Cooling
flaps and motor removed.
·
Tinted
windows
·
Heater
valve replaced
·
Hood
insulation replaced
· Timing belt and water pump replaced and tensioner rebuilt.
Known Issues
·
The
front bumper cover has some minor damage, which includes some spidering of the
paint. To be perfect it
would need to be repainted.
·
I made
a mistake when rolling the passenger side rear fender, and there is a slight
bulge in the lip (see pictures.)
·
There
are some small rock chips in the hood, but they are all very
minor.
·
Minor
wear on the driver’s side seat bolster (see
pictures)
·
The
vacuum diaphragms located in the dash that control the HVAC vents are leaking
(the replacements will be included.)
I have temporarily unhooked and plugged the offending vacuum lines so there will be
no vacuum leaks.
·
There
are a few minor scratches on the window tint.
· There is a small chip in the windshield glass (see pictures.)
· The brake light dummy alarm lights up when the car is first started. As soon as you tap the brake pedal, it goes out.
· The brake pad warning light comes on when the car is started. The brakes are perfectly fine, and I replaced the sensors when I last changed the pads. I suspect I didn't hook up one of the sensor cables correctly, but have not had time to check this.
Engine Pictures
Exterior Pictures
Interior Pictures
My Least Favorite Pictures
The pictures below show the aestetic
issues mentioned earlier.
