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We are going to document the process of installing a 3.8L X51 997.2 engine in a 2012 PDK Cayman R in this thread. This beautiful 2012 Cayman R car arrived from NorCal a few weeks ago; the motor had to be built from scratch in Germany because the inventory had been depleted. That engine is headed to the shop now from the dealership having just arrived stateside last week.
The car is going to receive the following upgrades:
ENGINE / DRIVETRAIN:
Porsche 3.8L 997.2 X51/GTS Engine Rated at 408 HP / 310 lb/ft
3.8L ECU Flash with Dimsport Slave Tool for 91/98 Octane Maps
BGB / Fabspeed Stage 1 Cold Air Intake with Upgraded Cone Filter
Cargraphic Stainless Steel Longtube Manifolds with 200 Cell Cats
IPD 82mm 3.8L Downpipe Upgrade
Additional Cockpit Noise Insulation for Intake Sound
Guard Transmission Limited Slip Differential for PDK
SUSPENSION:
RSS Tarmac Series 2-Piece Monoball Lower Control Arms (FR/R)
RSS Tarmac Series Rear Toe Links
Power will be in excess of 420HP at the crank and with the PDK, LSD and additional camber, this car should perform well at the track. Delivery will take place here in Florida with a weekend shakedown at Sebring during the PBOC 2016 Winterfest event.
John
P.S. IF ANYONE IS LOOKING FOR A LOW MILEAGE, NEAR FRESH 9A1 CAYMAN R ENGINE, THIS MOTOR WAS BOLTED TO A PDK TRANS SO IT HAS NO OVER-REV ACTIVITY. IF YOU KNOW OF ANYONE IN THE MARKET FOR A SPARE 3.4L 9A1 / 987.2 ENGINE, THIS WOULD BE A GOOD ONE TO GRAB.
Are you doing any mods to the PDK so that it can handle the addition of 90hp (other than the LSD)?
I believe the PDK transmission is the same between the Cayman and 911. With the only thing that varies is the gear ratios and the fact that it's turned around.
Are you doing any mods to the PDK so that it can handle the addition of 90hp (other than the LSD)?
We have been running this configuration in our track cars and race cars for 2 years now. We have had no drivetrain issues. The PDK is very robust and can handle plenty of power; it holds up on 997 Twin Turbo cars making over 600 HP and 600 lb/ft. We have track tested this setup for races as long as 6 hours around places like Sebring through cold and unbearably hot temperatures. We are approaching 60 hours of time in the car in the shop that runs monthly. Zero issues with PDK slippage, oil temps, or anything really.
Originally Posted by Winegums
I believe the PDK transmission is the same between the Cayman and 911. With the only thing that varies is the gear ratios and the fact that it's turned around.
Correct. While the bell housings are different for the requirement to be flipped around and upside down, the internals are the same.
[QUOTE=BGB Motorsports;12723544]We have been running this configuration in our track cars and race cars for 2 years now. We have had no drivetrain issues. The PDK is very robust and can handle plenty of power; it holds up on 997 Twin Turbo cars making over 600 HP and 600 lb/ft. We have track tested this setup for races as long as 6 hours around places like Sebring through cold and unbearably hot temperatures. We are approaching 60 hours of time in the car in the shop that runs monthly. Zero issues with PDK slippage, oil temps, or anything really.
I'm impressed, and frankly a little surprised, that the same PDK box can handle 600hp as easily as 300hp. That's pretty darn impressive! BTW, I could swear I've seen your donor car somewhere before......
We have been running this configuration in our track cars and race cars for 2 years now. We have had no drivetrain issues. The PDK is very robust and can handle plenty of power; it holds up on 997 Twin Turbo cars making over 600 HP and 600 lb/ft. We have track tested this setup for races as long as 6 hours around places like Sebring through cold and unbearably hot temperatures. We are approaching 60 hours of time in the car in the shop that runs monthly. Zero issues with PDK slippage, oil temps, or anything really.
I'm impressed, and frankly a little surprised, that the same PDK box can handle 600hp as easily as 300hp. That's pretty darn impressive! BTW, I could swear I've seen your donor car somewhere before......
It's like you guys are twins! The Cayman R makes 330 HP & 273 lb/ft and the X51/GTS from the 997.2 is rated at 408 HP & 310 lb/ft. While the torque jump is very noticeable given that it's nearly 10% at the crank, the 37 lb/ft and 78 HP we are gaining aren't enough to anger the clutches in the PDK. Our race cars that we run into the ground are making about 435 HP at the crank and probably another 15 lb/ft over this setup but it's still not enough to tax the PDK that can easily handle the power and torque numbers from the 997.2 twin turbo. Porsche really does make some amazing bits and pieces for these cars. They're so reliable and robust.
John, how is putting Guard LSD affects temperatures / reliability / oil longevity?
The Guard LSD has more locking which will keep the rear ABS activity down which will reduce rear brake fluid temps but it will by nature slightly increase the transmission fluid temperature.
We sell a lot of coolers for the gear stack and LSD side of the transmission and while we call it a PDK cooler, the OE car has a cooler for the PDK and ours cools the other side so that it balances things out. We even have a lot of folks in hot areas of the county that have used our cooler by itself to make a stock car last 30 + minutes on a track where ambient temp forces a limp mode situation. It keeps gear and LSD temps down which in turn doesn't heat soak the bell housing and send PDK fluid temps sky high.
The Guard LSD has more locking which will keep the rear ABS activity down which will reduce rear brake fluid temps but it will by nature slightly increase the transmission fluid temperature.
We sell a lot of coolers for the gear stack and LSD side of the transmission and while we call it a PDK cooler, the OE car has a cooler for the PDK and ours cools the other side so that it balances things out. We even have a lot of folks in hot areas of the county that have used our cooler by itself to make a stock car last 30 + minutes on a track where ambient temp forces a limp mode situation. It keeps gear and LSD temps down which in turn doesn't heat soak the bell housing and send PDK fluid temps sky high.
John, thx for the info.
Just to clarify - your cooler is for gears part of the gear box or for the clutches+differential part?
Anyway, my intention was to understand how LSD introduction affects things not in a real track/race environment (there i'm sure you vent and cool as much as you can) but in spirited/canyon driving.
10-30-2015, 12:53 PM
Build Thread: 987.2_023 - PDK 3.8L X51 Cayman R
