Well, there's not much I can here as most of this work was done by the former owner. It is one of the reasons I bought the car.
The engine sports a 3.4L Mahle piston kit with a 9.8:1 (vs. the stock 9.5:1) compression ratio. An autothority chip programmed for the 3.4L was also added, as well as raceware studs to make sure everything stays together.
The G50 transmission now contains close ratio, straight cuts gears. This was added by the former owner after he noticed the car really came alive above 4200 rpm after the engine modifications. The closer gears now keep the revs above 4200 rpm if shifted close to redline. The straight cut gears do give a fairly loud gear whine, but they are supposed to be more efficient from what I am told.
After I purchased the car, I located a set of SSI headers and a single out Monty muffler being sold used on the Porsche mailing list Rennlist (an excellent resource for any Porsche owner). I had these pieces shipped up from the US and ordered the new oil lines necessary for their installation (the seller even sent me the part numbers of the oil lines!). I haven't dyno'd the car since the exhaust upgrade, but it feels stronger in the lower rpms and seems to fatten out the power curve a bit (of course, that may be all in my head).
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This is the exhaust system the day I received it. Yes, I realize that the headers are backwards, but you get the point. If you look at the right side header (which I placed on the left), you can see that the former owner was running on driver side heat only. I currently have the same setup, but plan on hooking up the passenger side heat in the spring. |
| Even though the Carrera has the slot in the bottom of the
bumper to let air at the oil cooler, I noticed the car was running hotter than
I liked at the track. I removed the right side fog light and used the plastic
surround for it to make a cool air duct for the oil cooler. Behind the mesh, I
made a sheet metal duct to direct the air straight at the cooler. In addition
to this, I removed the A/C so the condenser is no longer blocking the air flow
through the rear grill, and I added a "cool collar". The oil gauge
now get just slightly above the normal operating temperature during a track
session. With the factory plastic surround and the sheet metal behind the screen, the visual difference between the duct and the left side fog light is not apparent from a distance. As you can see by the picture, the duct is pushed in too far on the top, so I think I'll make a new one over the winter that fits better. |
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