Awesome
Start a thread on the build please!!

 

Excellent!!
+1 on starting a thread for the build. Do you have an estimate for the total cost (donor car + install)? What happens with the old engine, btw?

 

Imagine a light-weight 981 Boxster with the 991 "GT3" engine, brakes, and suspension bits in it. The ultimate roadster! Lee's project will come very close to this. Maybe if more people did stuff like this, then PAG would take notice?

 

John,

A 30-hour labor credit and one-year drivetrain coverage sounds great. It's heartening to see you believe in and stand by your work in this manner. But what about people like me who live in California? Do you have any affiliated shops out here that would apply that same coverage?

 

If you are talking about a Mezger GT3 engine, the engine won't bolt up to the gearbox. So step 1 is fabricating an adapter plate and custom flywheel to put the two together.

From there, the GT3 engine is not DFI and cannot be run on the stock Cayman ECU like the 9A1 engines can. So, you are talking full standalone from there, with all of the accompanying wiring.

Above and beyond the cost of the engine itself, I would estimate an additional $10k to get it in there.

I only know of one shop that has put a GT3 engine into a Cayman, and they did it along with an inverted Cup Car sequential gearbox to run in GT4 in VLN. That was Jurgen Alzen Motorsports. Probably added $100k to the build cost of the car.

 

For a moment there, I thought I was on the GT3 forum... I've never seen so many GT3 RL'ers on a 98x thread.

This may make me re-think my plan for an R8.

 

Count me in. Got rid of my 11 RS for the 14 CS. Crazy, maybe, but it's been a lot of fun researching and installing upgrades, and the car is just brilliant from a handling perspective. Can't wait to wring it out on the track. It's also nice to have BGB motorsports on our coast. John and his folks are cutting edge and a proven asset. A great resource for 987/981 performance issues.

 

Thank you for the information on the Metzger, but I was actually interested in the 2014 GT3 engine.

 

That's how I understood your question, too.

So how much to do the OP engine swap with the 991 GT3 engine?

 

Step 1: Find a wrecked 2014 GT3 and buy engine since Porsche won't sell you one. Expect to pay $25-35K (that's a WAG) for that used engine.

Follow up with me in about a year when you get your hands on that engine and we'll pursue it further.

 

Okay so I know this thread is months old but I just came across it... I'm very interested in this build for the street for a 2014 CaymanS. IMHO, a 3.8 (esp w/X51 pkg) or bored 4.0L engine is just the ticket for the 981.

As a west-coaster, my concern is getting the car registered in CA. Is it possible that this isn't a problem because it's a custom build; or am I just going to have to use or register the car out-of-state? At one time these types of engine swaps weren't a problem, but a few decades ago they made it so the only engine swaps that you could do were with the same (or newer) engines the car was offered OEM with... Thanks. This is exactly what the 981 needs.

 

Email me and we can get the ball rolling! Registration is not a problem as the car will pass smog. The warranty will be void but that's it. In a few weeks the 4.0L stroker kit will be finished so that the 4.0L Cayman will be a reality and a well priced one at that!

 

4.0? Cool! Ballpark price for motor vs stock 3.8?

 

It is all still somewhat tentative but if the 3.8 conversion is $20K, i'm trying to do the 4.0L for under $30K.

 

Sounds great. Will that work in a 987.2? You're working on my sons formerly red S now. Mine is an 09. I hope to do it next year.