TPC Racing

The Race Against the Clock : 48 hours to track prep a 4.0L GT3!



The Car- New client to us, 997.1 GT3, 4.0L engine build, 997.1 cup front splitter, 997.2 cup replica wing and decklid, BBS E88 wheels, OEM PASM suspension, and OEM interior.

The Mission- To complete requested track safety prep, suspension work, brake fluid flush, oil change, and tech inspection before the last track day of the year that our new client friend can attend. This level of work is typically no drama, but due to several mishaps in shipping (at no fault to our vendors) we were left with only 48 hours(TOTAL HOURS, not shop hours!) to install the following.

• DAS Sport bolt-in roll bar, prepped, primed, and painted to Speed Yellow.
• Racetech RT4009WHR seats with Stealth option.
• Racetech Magnum 6-point HANS-compatible harnesses in Yellow(we got the last pair in the country!).
• DSC Sport active suspension controller and DSC Sport 3-axis accelerometer.
• Tractive DDA RT coilovers with custom spring rates. To pair with the car’s aero package while maintaining supple and refined street ride, we selected 90/143N-mm (504/800 in-lb) springs. (In order to meet the timeline we had to deviate from the blue Swift springs.)
• TPC Racing Pro Race 29/24.5mm adjustable sway bars and race links. (w/ optional rubber rod end boots)
• Street/track alignment with corner balancing.
• Brake fluid flush with Castrol SRF and oil change with Mobil 1 synthetic.

With the full team on deck, working in the same way we would the night before the championship race, we met the timeline and with a few minutes to spare to take some photos.
















Speed Yellow roll bar is ready to install!



Stealth seat for the stealth machine!









The Outcome-Our client friend came in the afternoon before the track event, we adjusted to his driving position and the harnesses to fit. Then we went on a road test with him all strapped and to see if any other adjustments were needed before he heads out to the track. He was thoroughly impressed by the first ride; comparing the DSC/Tractive to OEM PASM, his words were "how can it be so comfortable, and firm, and stable at the same time!!". As for the track, he had an absolute blast in his car knowing the safety prep is adequate for the usage and the suspension setup made him feel like a King!





At TPC Racing, our goal is to deliver exceptional service despite any and all unforeseen conditions. For anyone else wanting us to do this, well, we prefer to have more than 48 hours, but we can and will step up to the occasion.

You can find our products below linked to our website that were used on this GT3!

TPC Racing Pro Race Sway Bars

DSC Sport Controller

Tractive RT Damper Package


For more information please visit our websites TPCracing.com and DSCsport.com and for further questions or inquiries for service, track prep, or of the full package contact us via email at info@tpcracing.com or via phone (410)-799-7223.

Hoyt

Great job and build you guys did!!

chillindrdude

Met the owner of that car at the NASA-MA DE weekend. Friendly and easy going. Can't believe that car used to be turbo'd!

A friend hit 150+ on the straight at Summit in that car. It's frickin' FAST!

pissedpuppy

you guys do the 4L conversion? good looking car!

TPC Racing

We did not do the engine work on this particular car. But YES we do 4.0L engine builds! We have done 4.0L engine builds for 997.1, 997.2, and Cup, using factory motorsport RSR 80.4 mm stroke crankshaft. We have scheduled at least one more 4.0L build before the end of the year.

CosmosMpower

The guy probably ran in green run group and left the psm on lol.

shotor

So he Turbocharged his GT3, then de-Turbocharged his GT3 and then made it a 4.0L? That is almost the full spectrum of engines on this platform.

Did he mention pros and cons on the three varieties or any other info?

shogun974

Very interesting mods. What benefits the tpc sway bar kit offer over the oem GT3 sway bars? I mean replacing oem gt3 sway bars by tpc sway bars is a good track focused modification or can it be enjoyable for street driving?

Tom@TPC Racing

We originally designed our TPC 997 adjustable sway bars back in 2005 to fill the needs of the Grand-Am Cup racing teams. Back then(and still today) the factory 997.1 GT3 bars are a bit lacking in what we refer to as chassis platform. Coincidentally our bars are similar rate to what came years later on the 997.2 GT3/RS/4.0. Our bars are still ~15% stiffer at the stiffest setting while having extra adjustment hole on each bar to provide more increment of adjustment. For spirited road enjoyment and track, replacing the .1 bars with TPC bars makes the car noticeably more stable and plain feels better in nearly all driving situation. The ride over bumps is comparable to .2 bars. Actually, not much comfort(if any) is loss because the .1 bars that are much softer promotes excessive chassis movements. I speak from personal first hand experience having swapped out the bars on my .1 GT3 back when I drove my car almost everyday in the Summer.

chillindrdude

the "de-turbo-ing" wasn't by choice. apparently, something internal to the turbo failed and a metal fragment got sucked into and damaged the cylinders. the re-bore to 4.0L was done to repair the cylinders. at which time, he dropped the turbo completely to revert back to NA.

didn't really question him at length about the driving differences and power delivery.

gt2-josh

I sure wish my GT3 was slate grey....and a 4.0. Great work Tom and team! Awesome work on a short fuse. Best Josh

gnathologist

Your senses are strong and correct in every way, lol. I’m in green group 1 and yes, I like my traction control on
I just started tracking the car. I’m enjoying the sport. What I enjoy the most is seeing how dedicated track rats are working so hard on their cars. People are extremely nice and love the atmosphere

I surely looked the fastest in green group 1, but was getting passed by Subaru’s and old school mustang 5.0 lol. It’s all good as I’m learning to be a better driver.

gnathologist

gnathologist

I just want to sincerely thank Tom and Harris for taking such great care of my car. I have been searching for the right shop and I have found the one that I will build a long term relationship with.

It was so much fun at the track with Harris and I appreciated all of his guidance. Can’t wait for 2018!

boochook