dlwasser12

Looking to get some information how the PDK trans works for club racing and how reliable it is. Are there any upgrades you need to do and what trans fluid should you use.

ProCoach

PDK rocks! Plenty of good info under the search. They're now repairable, too.

Carlo_Carrera

What are the best shops for PDK repair?

ProCoach

The pioneer (and the only one that I know of that has done significant volume, and for several years) is Todd Lamb's Atlanta Speedwerks.

Some good videos on their PDK repair page: https://www.atlspeedwerks.com/transmissions

Lots of good PDK info and answers to the OP's questions on their PDK Facebook Group (can't link it on this post).

I have no connection, but I have hear very good things. Todd is a stand-up guy and they are a Rennlist sponsor, too.

Another good source for PDK info/mods/add-ons is John Tecce at BGB Motorsports in Ormond Beach, FL.

ProCoach

Here's more good info, plus a repair shop database worldwide. https://t-design9.com/porsche_PDK_di...on_sensor.html

I look at it like I shop for a surgeon. I want someone that's done a 100, not 1 or 2. That's why I would recommend Todd's shop.

OP, while there have been issues, I've worked with by now several hundred 911, 987, 981 and 718 PDK-equipped cars racing, and I can assure you that these are not the problem area for most cars.

Part of the trepidation prospective racers have about this system is that Porsche requires their dealer exchange PDK transaxles, rather than repair them. Hence the frightening bills.

Not saying all failures can be repaired. Far from it, racing is am incredibly taxing environment, especially with the thermal issues. But, there at least now exists an alternative to the manufacturer's prohibition of "breaking the case" on the PDK for possible repairs.

Carlo_Carrera

Ormond Beach FL! How convenient, my father-in-law lives there.

ProCoach

John is a terrific resource, one of the first to race a PDK-equipped car at the highest professional level. Lots of experience and wisdom there.

nineball

agreed on both points - pdk is awesome on track and john's shop is top notch. have a friend who bout a prep'd 987.2 racecar from him and then upgraded to a gt4rscs and had john's shop do everything on that one. he was very happy.

brake dust

What "upgrades" if any, did Porsche do to the Cayman Club Sport?

38D

basically none. They removed 7th gear but the rest is the same.

nineball

a good read - https://www.motortrend.com/features/...family-values/

ProCoach

Marc Miller is such a gem. Excellent coach, been doing it before it was a thing.

RennPart

The diff in the Clubsport is not the same as the street car.

I believe 7th gear is there but the TCU is programmed not to use it.

--Aaron

Krokodil

CS vs. Street - primary ratios are the same but the constant ratio shaft and the R&P ratio are different resulting in a different final drive ratio - CS @ 3.775 vs. Street at 3.443, giving the CS a shorter final drive for quicker acceleration, but same drops between gears in the stack

Also, we ran a street PDK with a Guard LSD for 5+ years without issue. The PDK needs to be kept cool, so we ran three different coolers - one for the clutch section and two for the gears.

erliuic

The PDK in the B1 cars are pretty reliable. I think it's because it's less power and you can add cooling. Anecdotally, the 981 Clubsport PDKs seem to last somewhere between 9-12k miles. To my knowledge, you cannot add cooling for the PDK for GTD.