Porsche 4.0L illegal?

[HORNDAWG]

It seems there is an issue with the 4.0L engine blocks being used in the Porsche 997 GT3 RSR. They installed steel sleves in the aluminum block when they bored it out to the larger size. The original engine is all aluminum.

Art. 5.2 - Modifications :

5.2.1 – Cylinder block, cylinder head(s), valve angles, firing
order, number and location of camshafts : they must remain
original, as they are fitted on the series vehicle.
5.2.2 - The adding of material to the cylinder block or cylinder
head(s) is not permitted. Intake and exhaust manifolds are
free but they must be supported on the original cylinder
head gasket face.

[fanta]

hmmm, this should be interesting.

[HORNDAWG]

I think what is coming into light here the fact that the original configuration of the homologated engine is not being run.

"The cylinder cases are made of a light alloy featuring aluminum, with Nikasil®-coated liners. For improved efficiency, including better fuel economy, the engine's compression ratio was raised to 12.0:1."

and what we are hearing is that it is running steel sleeves (liners) now. The problem seems to be that, as sleeving an engine is legal, there was no waiver or re-homologation before hand for the change in the sleeve(s). That would make the engine illegal as it does not match the original homologation. Will the bodies that be let them get away with it? I hope not, I would expect/hope the bodies to follow the rules even if it was a Vette! Everybody needs to play by the rules! What gets me in this is it seems to just boil down to laziness or c--ckyness, in either case, shame on Porsche!!

[Canada ALMS fan]

At least the series created a short term solution of a weight penalty instead of parking them. Longer term this needs to be addressed...

[fanta]

Originally Posted by Canada ALMS fan

At least the series created a short term solution of a weight penalty instead of parking them. Longer term this needs to be addressed...

Didnt seem to hurt the Lizards. Speaking o the Lizards, the 44 has been way off pace all year long. Has this basically turned into a test car for the team?

[HORNDAWG]

Hmm, it seems the new car GT3 RS has a 3.8 in it. So the 4.0 still has not been used in the base car!
__________________________________________________ _______________________

New Porsche 911 GT3 RS
The Most Sporting Road-Going 911

Stuttgart. Dr. Ing. h.c. F. Porsche AG, Stuttgart, is sending the new 911 GT3 RS to the starting line: Delivering even more engine power, offering lower weight, and featuring shorter transmission ratios as well as body and suspension elements upgraded to an even higher standard, the new 911 GT3 RS sets the foundation for homologating the racing version of the 911 GT3 and therefore offers everything it takes for ongoing success on the race track, continuing the series of absolutely uncompromising, sporting 911s homologated for the road.

The heart of the new 911 GT3 RS, the power unit, is based on the engine already featured in the 911 GT3. Like the latter, the RS power unit now displaces 3.8 instead of 3.6 litres, delivering even more power and revving up even faster and more dynamically.

The engine featured in the new 911 GT3 RS delivers 15 bhp more than its counterpart in the 911 GT3, that is maximum output of 450 horsepower from the fast-revving naturally-aspirated power unit. This means specific output of more than 118 bhp per litre from the six-cylinder, an extremely high figure for natural-aspiration technology even in the strictest worldwide comparison. And unlike many other high-performance engines, the power unit in the new 911 GT3 RS remains fully suitable for everyday use.

The new 911 GT3 RS comes exclusively with a six-speed manual gearbox optimised for short gearshift travel, low weight and high efficiency. To enhance the level of performance throughout the entire range of engine and road speed, the gears come with a shorter transmission ratio than on the 911 GT3, deliberately making concessions in terms of even higher top speed.

To further improve its sporting behaviour, the new 911 GT3 RS comes for the first time with a purpose-built and specially set up PASM suspension, with wider track not only at the rear, but also on the front axle. Accordingly, the body of the new 911 GT3 RS is wider not only at the rear, but also at the front through the use of additional wheel arch covers.

The front axle comes with nine-inch-wide wheels running on 245/35 ZR 19 sports tyres, the rear axle features twelve-inch-wide wheels incorporating 325/30 ZR 19 sports tyres.

The dynamic engine mounts featured as standard also serve to improve the car’s driving dynamics to an even higher level. Depending on driving conditions, the mounts change in their stiffness and damping effect, improving the connection between the engine and the body when driving under very dynamic conditions.

As yet a further point the car’s aerodynamics develop even more downforce than on the GT3, again benefiting the qualities of the car on the race track. Racing qualities are also why Porsche is introducing another new option in 2010, a lithium-ion battery delivered with the car and, replacing the conventional lead battery, reducing weight by more than 10 kg or 22 lb.

The new 911 GT3 RS shows its close connection to motorsport also through the dynamic looks of the car borne out in particular by its low ride height, the new, extra-large carbon-fibre rear wing with its specifically designed wing supports made of aluminium, the characteristic dual tailpipes on the extra-light titanium sports exhaust, as well as special front and rear parts exclusive to this model.

Sales of the new Porsche 911 GT3 RS are starting in Germany in January 2010. The Euro base-price is Euro 122,400.- without value-added tax and national specifications.