Porsche 944 Turbo S Street / Track Motorsport Pca on 2040-cars

Prepared as the ultimate street legal Track Car for dual-purpose HPDE/street duty.  Comfortable enough to drive daily - safe, predictable, and fast enough to terrorize at the track.

This car compares favorably to the ‘real’ Turbo S Upgrades.  My car is a 1986 standard Porsche 944 Turbo upgraded to 'near S' specs... and in some cases improved specs (adjustable camber, larger improved turbo, race seats, etc.):

Stock Turbo S	1986 Turbo S Clone FOR SALE
K26-70 Turbo	K26-8 Larger Turbo modified by Vitesse
Larger 4-piston brakes from 928 S6; smaller in rear	4-piston fixed caliper Brembo brakes all 4 wheels
Limited slip differential	Limited slip differential
Anti-lock brakes	Real men don’t use anti-lock
Stiffened torsion bars	30mm stiffened torsion bar
Stiffened anti-sway bars	M030 anti-sway bars: 30mm front, 22mm rear
Adjustable Koni shocks	Adjustable Koni shocks & Adjustable Camber Plate
Funky plaid interior	Custom perlon carpet and Corbeau Race Seatss

 

Suspension

·         Porsche 968 M030 anti-sway bars

o   Front diameter 30 mm

o   Rear diameter 22 mm

o   New updated 968 Porsche links and bushings

·         Adjustable Koni dampers

o   Front spring rate 350#

o   Adjustable front spring collar

o   Rear spring rate 30mm torsion bar (largest available – and preserves stock mounting for forces – rate comparable to front)

·         Corner Balanced

·         KLA Strut Brace

·         Racers Edge adjustable camber plates

·         New OE bushings

o   OEM Control Arm bushings

o   Weltmeister Inner Spring Plate Bushings

o   968 Style Caster Blocks

·         New OE lower control arms and ball joints

Brakes

·         Factory 944 Turbo Fixed Calipers

o   quick change clip – 1 min per corner

o   Professionally cleaned & rebuilt approx. 5000  miles ago

·         Performance Friction 97 Compound pads

·         Street pads

·         Zimmerman x-drilled rear rotors

·         OE style front rotors

·         Stainless Steel Brake Lines

Safety

·         Custom-built  Jerry Sidock designed roll bar from B Pillars back

o   6 point welded construction – custom fit to provide maximum cargo space in rear hatch

o   Absolutely perfect fit, finish, and vehicle integration

o   Vertical Main Hoop for ultimate safety

o   Harness Mount

o   Custom welded-in cage, tight to perimeter of vehicle preserves the huge storage space in rear hatch (carry all four track tires, tools, chairs, etc. to the track)

·         Corbeau Forza race seats, suitable for 6-point harnesses

o   Black upholstery

o   3” cam-lock harnesses for both driver and passenger

o   Schroth eyelets and backing plates

o   Positioned for safe and comfortable belt angles

o   Two separate eyelets for anti-sub belts for a true 6-point setup

Reliability

·         New metal impeller water pump installed with recent engine rebuild

·         New OEM radiator and hoses; aluminum thermostat housing, new thermostat, and gaskets

·         Redline MTL in transaxle

·         Redline Water Wetter in cooling system

·         Fluids replaced every ~2 years

·         Mobile 1 15W-50 in engine

Engine / Drivetrain

·         Recent engine rebuild with assistance of Steven Cramer of Autocore (SEM PCA HPDE Safety Chair)

o   K26/8 “cheater turbo” from Turbo S

§  Turbo custom modified by Vitesse for faster spool-up and higher top end than standard K26/8

§  Slightly larger than stock for increased power

§  Tial dual-port wastegate

§  Lindsey Racing adjustable boost control

o   New updated metal impeller water pump kit

o   New timing belt

o   Reworked high flow fuel injectors

o   Gates Racing Timing / Balance / Roller Kit

·         Lindsey Racing 3” Exhaust

·         Lindsey Racing Performance Chip

·         Lindsey Racing Boost Enhancer

·         SPEC Stage 2 Clutch

·         Fidanza Lightweight Aluminum Flywheel

·         Limited Slip

·         New OE Engine Mounts

·         Custom A-Pillar Two-gauge Pod

o   Boost Gauge & Air / Fuel Gauge

·         Lindsey Racing Idle Stabilizer Hoses with Venturi Delete Kit

Interior / Other

·         Custom, Dark Charcoal Purlon Carpet (the same light weight material found on early 911s)

·         RS Rear Seat Delete

·         Momo Steering Wheel

·         Backdated to Porsche OEM Manual Steering Rack for improved feel and no power sapping power steering pump

·         Aftermarket Stereo plays nicely

·         Power sunroof motor removed to save weight – sunroof caulked to keep water out

·         Tinted Windows

Wheels / Tires

·         Car comes with one set of wheels… negotiable on all wheels… possibilities:

o   Factory Fuchs with General UHP Ultra High Performance Street Tires

§  Highly desirable and valuable wheels

§  Black with polished lip

§  7x16 front with 225-50-16 General UHP tires – 90% tread

§  8x16 rear with 225-50-16 General UHP tires – 90% tread, and 20mm T?V certified, bolt-on, 21mm H&R wheel spacers

o   OE Porsche Phone Dials with Hoosier R6 Track Tires

§  OE Silver finish

§  8x16 on all four with 245/45ZR16 tires (three OK, one flat spot)

o   OE Porsche Phone Dials with Blizzak Snow Tires

§  OE Silver finish

§  7x16 on all four with 205/55-16

·         Two Blizzak REV01

·         Two Blizzak WS-50

·         Tread Patterns VERY Similar

o   Two (2) sets: OE Porsche Phone Dials with Track Tires

§  Wheels painted yellow with red speckles

§  7x15 front and rear square setup

·         One set: (2) 225/45R15 Hoosier R6 tires & (2) Kumho Ecsta V700 R-Compound tires

·         One set: (4) 245/50ZR15 Hoosier R6 tires

Disclosure

·         Rod Bearing Spun May 2009 – Engine fully rebuilt 2012-2013 (I should have hired Steven Cramer sooner!) with only break-in mileage on new engine.  Runs VERY strong.

·         Odometer has been broken for a few years: mileage unknown; reads 49,648 (estimated 55,000)

·         There are a few paint chips from use – car looks great from 10’

What’s Needed

·         Due for brake fluid replacement

·         Due for transaxle fluid replacement

·         One 245/45ZR16 Hoosier R6 to make complete set

·         Odometer repair

Performance

·         New K26/8 Turbo has not yet been on the Dyno; however, the seat-of-my-pants tells me we’ve picked up another 25 to 50 very usable HP or so

o   Chip, Boost Enhancer, and shimmed waste gate (since removed when I added the new Tial 38mm Dual Port wastegate) improved Rear Wheel HP from 190 stock to 240.98 and increased torque from 70ft-lbs to 290.12 ft-lbs.

o   Estimated current Rear Wheel HP 265-290

o   Estimated current torque well over 300 ft-lbs

·         My 951 is an extremely easy car to drive on the track… 50/50 weight distribution front to rear, nicely corner balanced, balanced performance of power vs. handling

·         All lap times with low boost of approximately 14 PSI before K26/8 turbo was added

o   1:21 at Waterford Hills almost totally shot Hoosiers

o   1:38 at Gingerman (prior to new turn 10A) on Kumho Escada 700 R-Compounds

o   1:35 at Grattan on fairly worn Hoosiers

o   2:45 at Road America on used Hoosiers

o   2:23 at Virginia International Raceway on used Hoosiers

o   1:46 at Mid-Ohio on used Hoosiers