SOT: Cayman X lives, take a ride!, 3.4 to 4.2L DFI 9A1 engine built our way! Options

[Jake Raby]

It may be water-cooled and modern, but I figured you guys would get a kick out of seeing what Blake and I have been working on along with Charles from LN Engineering since October of last year... Its still mid-engine, so don't bust my balls too bad :-)

We started with Charles' wife's track car, a 2010 Cayman S with a stock 3.4L 9A1 DFI engine. We stripped it out, carefully disassembled it and put it all back together again as a 4.2 liter beast... Its seen both bore and stroke increases and this engine currently displaces more volume than anything from the Porsche factory! So what if they have a 4.0?? Hell, we have a 4.2!

We finally got it fired up yesterday and got it on the road and dyno today.. It keeps lighting the tires up on the rollers (needs more tire) and the PDK tranny has some issues with holding the power, but we should be able to solve that with some ECU flashes. Today it made 320 at the wheels with the tires lighting up and it still has the stock exhaust and stock ECU flash..

We completed this project with only one Porsche special tool set and no manual, because the manual doesn't exist.. All performance components were designed and built by LN Engineering or RED.

I think we are on the leading edge :-) Here are some pictures of the internals.
:Note the cylinders, pistons and rods in this engine are from the same materials we use in our Type 4/ 914 builds :-)

104mm big bore Nickies 9A1 DFI crankcase half.

(IMG:http://www.914world.com/bbs2/uploads_offsite/fbcdn-sphotos-a.akamaihd.net-1095-1332550058.1.jpg)

Stroker crank and billet connecting rods..
(IMG:http://www.914world.com/bbs2/uploads_offsite/fbcdn-sphotos-a.akamaihd.net-1095-1332550060.2.jpg)


DFI piston, what a bitch these were to design, to include the hard anodized top ring land..
(IMG:http://www.914world.com/bbs2/uploads_offsite/fbcdn-sphotos-a.akamaihd.net-1095-1332550061.3.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/fbcdn-sphotos-a.akamaihd.net-1095-1332550061.4.jpg)

ECU controlled multi-stage lube pump..
(IMG:http://www.914world.com/bbs2/uploads_offsite/fbcdn-sphotos-a.akamaihd.net-1095-1332550061.5.jpg)

Inside the sump its a little different than a 914!
(IMG:http://www.914world.com/bbs2/uploads_offsite/fbcdn-sphotos-a.akamaihd.net-1095-1332550062.6.jpg)

Blake and I torquing the camshafts after setting valve timing.. What a bitch!
(IMG:http://www.914world.com/bbs2/uploads_offsite/fbcdn-sphotos-a.akamaihd.net-1095-1332550062.7.jpg)

Complete 4.2 liter DFI longblock
(IMG:http://www.914world.com/bbs2/uploads_offsite/fbcdn-sphotos-a.akamaihd.net-1095-1332550063.8.jpg)

Here is the complete beast ready for install back into Cayman X...
(IMG:http://www.914world.com/bbs2/uploads_offsite/fbcdn-sphotos-a.akamaihd.net-1095-1332550063.9.jpg)

Rumor has it there might be a challenge between Cayman X and a Cayman R at sometime in the future and a review of the two might just end up being put into print :-)

And now here is the video... It is disgusting, even with the PSM it still roasts the tires and gets sideways in the first 3 gears.. Not too bad for the first generation of development for the 9A1 engine. Blake did one hell of a job assembling this one and overcoming the challenges..

http://youtu.be/62i7wYcHAYg


https://www.youtube.com/watch?v=62i7wYcHAYg



This post has been edited by SirAndy: Mar 23 2012, 08:06 PM