Porsche 911 Turbo Flachbau

In August of ‘87, the car was sold new by George Follmer Porsche-Audi. The original owner wasted no time in seeking proper upgrades. In 1988, the 930 was brought to Andial — now Porsche Motorsport North America — and modifications from including a K27 turbo, larger intercooler, upgraded Bilstein shocks and stiffer torsion bars were installed.

After changing hands to the second owner in the early 90s, the more intensive modifications began, listed in detail at the bottom. Dick Elverud played a vital role in developing the car into its current performing state, and had a close relationship with the second owner of the car, enlarging the engine from 3.3 to 3.6 during one of his rebuilds and converting the trans to 5spd. Mr. Elverud is a highly-regarded Porsche race mechanic who fielded Porsche cars since the 1960s, from 906s to RSRs and 935s. The slant was used on road and track until the mid-2000s and driven infrequently thereafter, thus Dick rebuilt the engine again in 2015 after the car had sat for some time, with new bearings and seals throughout.

The interior is immaculate with no noticeable flaws to speak of, including the sport seats which are in excellent condition. The AC blows cold as well. The paint on the car is excellent. The second owner deleted the sunroof and drip rails / rain gutters, possibly after incurring some roof damage, and resprayed the exterior at the same time. Overall, the vehicle presents in excellent condition throughout and comes with COA, books/manuals, and most records dating back to 1987. Please do not hesitate to contact for more information or photos. VIN withheld but available upon request. Inspections are welcome and encouraged.

ENGINE

• Last rebuilt in 2015 by Dick Elverud, famous 935 and IMSA engine builder
• Displacement increased to 3.6l, built on original numbers-matching 3.3 case
  • 3.6l crankshaft (cross-drilled for oiling)
  • JE 100mm piston set for turbo engine
  • Porsche 100mm cylinders
  • Case machined for 100mm cylinders
  • Clearanced engine case & oil pump
  • Balanced crank, rods, & clutch assembly
• K27 Turbo
• Twin plug head conversion
• Cams reground to 964 profile
• Extrude-honed heads & intake
• Raceware connecting rod bolts, case studs, head nuts, and billet washers
• Titanium spring retainers
• Garretson longneck intercooler
• Powerhaus stainless exhaust system
• HI-6 CD boxes (2)
• MSD Blaster coils (2)
• Front oil cooler

TRANSMISSION

• 5 speed G50/50 short bellhousing transmission conversion
  • Purchased from Patrick Motorsports
• Rebuilt with close ratios / shorter gears
• Limited slip differential, modified for increased lockup
• Larger ring & pinion
• WEVO short shifter

SUSPENSION & BRAKES

• 23mm front and 30mm rear torsion bars
• Bilstein coilover conversion with Eibach springs
• Upgraded sway bars F/R (front is “through-body”)
• 993TT front brake calipers
• Stainless steel braided brake lines
• Brake ducts

EXTERIOR

• Sunroof delete
• Rain gutter / drip rail delete
• DP front valence
• 993 / aero mirrors
• 993 door handles and gaskets

Factory Highlights per COA:

• Slant Nose – per PCNA, 1 / 144 factory-produced 911 Turbo Slantnose Coupes in 1987; 1 / 369 between 1987-1989.
• Limited Slip Differential
• Sport Seats w/ Electric Height Adjustment (L/R)
• Electric Sliding Sunroof (since removed)
• Blaupunkt Radio ‘Reno’
• Alarm System
• Goodyear Tires
• California Emissions