BGB Motorsports

Well folks...the long wait is over and the numbers are official. By taking our existing Grand-Am Cayman package, dropping in a DFI 3.8 and flashing the ECU we were able to break any horsepower and torque records previously achieved. By sending out the cylinder heads to get a valve job and porting, we were able to shatter any previous horsepower and torque numbers. Results as follows:

Existing bolt-ons:
Cargraphic Race Headers
BGB Motorsports 4" Intake
BGB Motorsports Race ECU
BGB/RSS Tuning DFI Pulley Kit

Dyno Results at the rear wheels on our Dynojet:

Stage 1 (as raced in Grand-Am) (stock): 3.4L DFI 987.2 MA.121C Engine: 340 horsepower and 272 lb/ft. of torque at the wheels

3.8L DFI 997.2 MA.101 Engine (stock): 385 horsepower and 299 lb/ft. of torque at the wheels.

3.8L DFI 997.2 MA.101 Engine WITH PORTING AND VALVE WORK: 405 horsepower and 311 lb/ft. of torque. The latest and greatest iteration which is our own attempt at a DFI 997 GTS engine produces crank horsepower on a Cayman of 458 and crank torque of 355. Eat your heart out Cup cars!

John Tecce
BGB Motorsports

aussie jimmy

wow - very nice!
what other mods need to be done?
transmission? diff?

GTgears

Stock gearbox other than our LSD as configured for when the car ran in Grand Am...

Turn3 Autosport

Nicely done John!

Cayman_Sense

John- That's awesome! Is this a non-PDK car? I'm assuming so based on Matt's comment re: LSD.

Chris R.

Wow!
What did you have on the 3.4L to get 340whp?
Amazing work, go and kick some cup ***!

Darkstar1

What a nice set up that is. Sounds like fun.

ChrisF

Congrats on the transplant and results. Curious how the car feels with what many think should have been installed in the car in the first place.

Krokodil

We installed a M97 3.8 in the Gen 1 race car and it feels great. Added torque makes the car much more forgiving in traffic.

Power is excellent, nice and linear - 360 RWHP and 290 Lb-Ft of Torque (unfortunately we now need to dial it back for class the weight/hp limit).

Overall it makes the Cayman an evey more amazing car

Cheers,

KS-CS

How do you "dial it back" - intake restrictor?

Kind of sucks that you can't enjoy the full benefits of the upgrade - would the full-power 3.8 make you competitive in another class?

gomarlins3

That's awesome. I wish Porsche would quite holding the Cayman back and put the correct engine from the factory in it already.

Krokodil

Different ways to dial it back - tuning, restrictor, combination

Not a big deal really. The car is plenty fun.

No, the car is too heavy for the next class up. Would need to spend mega bucks taking weight out and be stuck racing with 997 cup cars. Already running against older 996 cups.

Cheers,

Krokodil

Thanks, but I have to disagree with you. The engine it has stock is what allows us to buy it at the current price point (an is more than adequate). A Cayman with more power would likley eat further into 911 sales, necessitaitng a higher price on both cars (higher margins on 911).

The aftermarket 3.8 option is there for folks who want it (very small percentages of buyers I suspect) and BGB, Vision, and others are ready to make it happen.

We made this change to run a specific race class (needed more TQ), not because the car was slow.

Cheers,

KS-CS

Krok:

Did you blueprint and upgrade the components (e.g. connecting rods, etc.) on the 3.8 motor? Are the connecting rods (and bolts) on the 3.8 the same as the 3.4?

Krokodil

Yes, we installed Carrillo rods on the 3.8. We also machined the crank and did a few other things for performance and reliability.

The rod and rod bolts appeared to be the same type. Howeverl, they are not the same rod as the 3.8 has a longer stroke and therefor a longer rod.

Cheers,