1987 Porsche 911 M491 Cabriloet

  • Location: Phoenixville, Pennsylvania, United States
  • Condition: Used
  • Make: Porsche
  • Model: 911
  • Type: Convertible
  • Trim: M491
  • Year: 1987
  • Mileage: 99,382
  • VIN: WP0EB0911HS170749
  • Color: Blue
  • Number of cylinders: 6
  • Transmission: Manual
  • Interior color: Tan
  • Vehicle Title: Clear

1987 Porsche 911 M491 description

1987 Porsche 911 M491 Cabriolet (Very Rare Find; 1 of 303)

3.2 Carrera; G50 transmission

Venetian Blue over Champagne


Factory option codes:

018 - Sports Steering Wheel with Elevated Hub

158 - Blaupunkt Reno Radio

341 - Central Locking

439 - Electric Cabriolet Top

454 - Automatic Speed Control

491 - Turbo Look, includes:

  • Factory wide body

  • Front & rear spoilers

  • Turbo brakes

  • Turbo suspension

533 - Alarm System


Original engine and trans with 99,382 miles (as of 3/7/18)

Fully functioning Electric Cabriolet Top with Clear Rear Window

Original service book, warranty book, tools, jack, COA, window sticker

Porsche spare tire air compressor

Convertible top boot

Blaupunkt Toronto BT head unit installed by PO (I have the original head unit)

Fabspeed high flow cat and max flow muffler (12/2017; I have the original cat and muffler)

All body vin tags, drivetrain tags and stickers in place

Owned by long-term PCA Member (Riesentoter Region)

Stored in climate controlled and insulated garage


Compression & Leak Down Results

Cylinder 1: 1606%

Cylinder 2:1606%

Cylinder 3:1633%

Cylinder 4:1624%

Cylinder 5:1605%

Cylinder 6:1605%


Tires: Bridgestone Potenza RE-11s

Front: 225/50R16 date code 0417

Rear: 245/45R16date code 0416

Recent Engine Out Service by Performance Auto in Malvern, PA at 98,669 miles

  • Inspected head studs and re-torque head

  • New clutch, clutch fork, shaft bearings, pilot bearing, flywheel ring gear, release bearing, lever shaft & lever shaft seal

  • New slave cylinder & slave cylinder line

  • New input shaft seal

  • New rear main crankshaft seal

  • New intake manifold gaskets

  • New oil lines

  • New fuel lines

  • New breather hoses

  • New cooling fan pulley

  • Valve adjustment

  • New valve cover gaskets

  • New spark plugs and ignition wires

  • Fuel injectors cleaned

  • Mobil 1 20W-50 oil & new oil filter

  • Mobil 1 gear oil

  • New shifter bushings & pivot cup

  • A/C conversion from R12 to R134A with new o-rings & fittings

  • New A/C receiver drier

  • New O2 sensor

  • Sent ECU out to be re-built

  • New luggage compartment struts

  • New engine compartment struts and deck lid latch

  • Replace K&N air box with stock air box and new air filter

  • Rebuilt starter

  • New Interstate battery


  • New OEM match champagne carpets from Lakewell

  • New Lloyd floor mats

  • New frunk carpet set from Auto Atlanta (have the original perlon)

  • Front seats reupholstered by PO

  • Very high quality repaint by PO

  • No chips, dings or scratches

  • All electrics and mechanicals operate properly with exception of the cruise control



Ownership History:

1st Owner - Richardson, Texas

(Service records from new until 1991)

2nd Owner - Flower Mound, Texas - 1/29/1992, 33,675 miles

(Two service records from 1997)

3rd Owner - Dallas, Texas - 5/10/2001 approximately 88,000 miles

(Two service records from 2004 & 2005)

4th Owner - Charlotte, North Carolina - 11/4/2005, 93,484 miles (No service records)

10/5/2011 - “Very Minor rear end damage reported”; I was told by the consignor that the 911 was scratched on the rear decklid while parked,requiring the rear decklid to be repainted.

5th and current owner - Valley Forge, PA - 6/13/2017, 98,618 miles


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  • Make: Porsche
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