vandersmith

Been working with a vendor I found on here buried in pages from years ago. We've been emailing back and forth and this is the final product.

I'll ask him if he wouldn't mind me sharing his information, if you search on eBay you can find him

mistermct

sweet thread. soooo tempting to follow you down the rabbit hole... but I think I only need more noises. does the BMC filter make any difference in noise/performance?

CME

Welcome to the Club. Here is a list that overlaps some of what has been disclosed already:

RS Flywheel;
Pin/Weld Coolant Pipes;
997 RS shifter (feels great);
996 Cup split rear lower arms;
Metal Brake Lines (SRF Fluid);
Pagid Yellow RS29 front pads;
Pagid Black RS14 rear pads;
Proper alignment (kasamul (sp) good starting point);
Cup front lip;
Rear wing 8 degree angle adjusters;
Rollbar with Harnesses;
GT3 Euro seats (or similar);
Front bumper grills (protect those radiators); and
Guard internals for differential.

Good luck.
Chet

Vipertag313

Subscribed

Amir@Avus Autosport

Congrats on the car, and love how quickly you went to work on it! Some awesome changes in only a few short months. Should be a blast on track.

Looking forward to updates.

Gofishracing

Stunning . --- you've got me outdone. Aren't those CSF radiators and condensers beautiful !! No transmission rebuild? I love my speed bleeders. !

vandersmith

DONE - see earlier in post

Lots more to come. Example: previous 996 track build

baq911

Amazing build thus far! Sub'd - though I'm curious, what are your impressions going from a C4S to the GT3? similarities? differences? driving characteristics?

tgavem

ajcjr

Great thread, if you don't mind me asking as I seen you replaced a lot of things, are these questions that should be asked before purchasing the car? Are the motors and cars reliable for the track (ims issue or anything else).
Lastly what kind of lift is that.

thanks you and subscribed

Gadsby

tgavem

vandersmith

The car is a meant to be a perfectly sorted daily driver/track car. My goal is to keep this for an exceptionally long time and do everything right the first time.

As a PCA instructor, its important for me to state that Pinned/Welded coolant pipes are required for GT1 cars both GT3s & Turbos (read: not recommended, required) for a number of club events. Check with your local region or search here. Pinning the pipes after much research was always a large part of my plan for the car, it just turned out that it was both cost efficient and unfortunate that a lot more things needed to be addressed.

Here's the current build sheet of everything we've done since I took ownership of the car in December 17. Bear in mind that this car although it did come with 85k miles, it also came with 1" of service documentation since 2005 and passed Porsche PPI. It had every indication of being a well maintained example.

Maintenance Items:
Cooling:

• Pinned Pipes with JB Weld
• New Radiators = CSF Racing Aluminum Radiors for Left/Right & Center
• New Coolant Hoses = All of Them
• New Water Pump with Brass Impeller
• New Low Temp Thermostat
• New Coolant Level Sensor
• New Coolant Temperature Sensor
• Coolant Flush with Distilled Water + Water Wetter

Seals/Sensors:

• New Front Main Seal
• New Rear Main Seal
• New Axle Seals
• New Oil Expansion Tank Seals
• New Oil Heat Exchanger Seals
• New Transmission Seals
• New Crankshaft Sensor
• New Camshaft Sensor
• New Oil Pressure Switch
• Oil Change

Suspension/Brakes:

• New Solid Subframe Bushings
• New Upgraded Thrust Arms
• New Wheel Hubs x4
• New SS Brake Lines x4
• New Speed Sensors x4
• New Metric Head Brake Pad Pins x2
• New Speed Bleeders x8
• Brake/Clutch Flush

Transmission/Drivetrain:

• New Slave Cylinder
• New 2nd Gear Detent (Gbox)
• New Numeric Cup Shifter Cables
• Transmission Flush

Performance Upgrades:

Cooling:

• CSF Racing Aluminum Radiators for Left, Right, & Center
• Upgraded Water Pump with Brass Impeller
• 180 degree Thermostat
• Rennline Radiator Grills

Engine (Air/Exhaust/Etc):

• IPD Competition Plenum
• 82mm Throttle Body
• BMC Pop-In Air Filter
• Manthey Racing Complete Exhaust System (Headers/X-Pipe with 100-Cell Cats/Mufflers)
• RSS Solid Motor Mounts

Drivetrain:

• OEM Euro 996 GT3RS Lightweight Flywheel
• OEM 996 GT3RS Sprung Clutch
• OEM 996 GT3RS Pressure Plate
• OEM 996 GT3RS Pulley <--- This was insanely hard to find. There is a US, nationwide shortage.
• Numeric Cup Shifter Cables
• Numeric Ball-Bearing Shifter
• Cantrell Street/Track Motor Mounts

Suspension:

• KW V3 Coilovers
• Tarett Engineering Top Mounts/Camber Plates (F/R)
• Tarett Engineering Cup Control Arms
• Tarett Engineering Sway Bar End links
• GMG Racing F/R Sway Bars
• GMG Racing Front Bump Steer Kit/Tie-Rods
• GMG Racing Rear Toe Kit
• GMG Racing Rear Dogbones
• Upgraded Thrust Arms F/R with Poly Inserts
• Solid Subframe Bushings
• Alignment - Kussumaul Settings

Brakes

• Wrightwood Racing Cup Front Rotors (2-piece Floating)
• Street Pads - Stock Pagids
• Track Pads - Pagid RS29s
• Street Ducts - GT3 Brake Air Ducts
• Track Ducts - GT2 Brake Air Ducts
• MRG Titanium Wheel Studs

Interior Jewel Pieces

• 991 RSR Wheel with Rennline Quick Release
• Rennline Quick Release Fire Extinguisher

Coming Soon:

• GMG Half Cage
• GMG Seat Mounts
• Recaro Profi SPAs
• Schroth GT3 Harnesses
• Custom Wood Shift **** (Carrera GT Style)

vandersmith

GT3 vs C4S Comparisons:
If you check my C4S Build - which was an insanely over-the-top undertaking and I probably would have been better of buying a GT3 to start with as opposed to essentially building one in wide-body form - the differences are surprisingly not that stark.

Subjective Comparisons:

• Engines: The GT3 has noticeably more torque and pulls much harder. Even with the complete list of upgrades on my C4S (everything), the GT3 in stock form was and is a faster car. Now with the work done its off the charts.
• Shifting: Both cars got Numeric Ball-Bearing Shifters and Cup Cables. The gearing in the GT3 is actually longer but they shift identically and were meant to. I love Numerics stuff.
• Handling: As my C4S was converted to RWD with complete suspension upgrades, they handle about the same. Turn-in on the GT3 is an improvement due to the correct front wheel carriers, the wheel feels "lighter" at slow speeds.
• Braking: My C4S had the exact same GT3 brakes with upgraded pistons/seals. Both cars now stop exceptionally well.
• Track: See below

Objective
I have 22 track days of data from the C4S. When I get the GT3 back up north to PNW at the end of the season and run the same tracks again I'll put together some side by sides from Pacific Raceways, The Ridge, and possibly ORP.

I really wanted to get out before moving but couldn't find the time.

As luck would have it, the new owner of my C4S is in CA and we may get a chance to run side by side at Laguna or Sonoma this season which would be awesome to see if this was all non-sense or totally worth it.

Steve Theodore

What a great thread...I love how you meticulously compare all the parts, including weights, when you install new modifications. Congratulations on the GT3, they are a dream!