1999Porsche911:

East coast Irishman huh!?! No wonder I like your style mate. I too love my Evo Supercharged setup. Smooth pull from 2800rpm's all the way to almost 7000! I even get better gas mileage than without the new setup (unless I'm using too much of the loud pedal :-) ).

As a footnote, had a kid in a modified Sub. WRX blow by me on the highway recently. He slowed down and through the window I told him about 420hp from the supercharger and he told me he had about 400hp and 400ftlb torque. Being that his car is considerably lighter than mine I was hesitant to run a few gears w/ him. We both downshifted to 2nd and I pulled him by a little more than a car length before shifting, however his 3rd was dam quick and he had almost pulled me by a nose but apparently his redline is before mine so I was able to squeeze out enough to just edge him before we backed off. I was quite pleased with my convertible, luxury 4 whl drive cruiser being able to perform like that.

Regards

 

However, you can buy and install the EVO system AND buy a new engine for the price of the RUF system. I am sure their pricing will be cut in half once they get serious about marketing it.

 

does anyone know what type/brand supercharger RUF is using? Just curious.

E

 

I called TPC today to ask them about their setup. It's a litte more money for install because of the way theirs is setup, but I can definately see the advatage to using their roots blower vs. the centrifugal that Evo and Ruf uses. If I get more serious about this, I think I would explore the TPC. Seems to be the middle ground pricewise when compared to the RUF and Evo.

 

That's a good point, but if you buy the RUF system you don't need to worry about buying a new engine. You're paying for that piece of mind. Plus with the EVO system you'd still have to pay the labor on swapping the engine. With RUF, everything is covered.

I haven't heard of any issues with the EVO system, but it's not warrantied, and that has a price to it.

 

I don't understand why you would need any insurance. A properly installed SC system puts no more pressure on the engine than does bouncing off the 7300 rpm limit. I have absolutley no concerns about the engine or drivetrain...only how long the blower will last spinning at 50,000 rpm's. But if that goes, you're only talking about $3,000 for a new one and 30 minutes to install.

 

that sounds like a lot of fun. the ruf must be very expensive (ie: $10k + install of motor, more than Evo). and again, RUF will likely go through the trouble and expense to C.A.R.B. certify theirs so they can legally be sold to CA customers.

 

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hey, i fully support doing the EVO SC as my having had it done to my car illustrates. however, i think it absurd to claim it causes no extra stress on any of the motor components. RUF's refusal to do it on motors over X miles would suggest otherwise.

"Please take care of the milage of the engines:

- Up to 40.000 km no special check necessary
- From 40.000 km to 80.000 km we check the engine for the possibility of guarantee and replace the necessary parts
- More than 80.000 km we recommend a replacement of the engine:"

 

Ben: Did you ever sell your SC setup? I thought I remember reading at one point that you were going to remove it from the car.

 

I said: no more pressure on the engine than does bouncing off the 7300 rpm limit. And it is a fact that is adds NO additional pressure on the egine at any speed except at WOT.

 

No, I got lucky and found a home for it with an out of CA buyer. He also had an SC'd (TPC) 993 once upon a time so was familiar with SC'd 911s. I was getting some pretty large estimates for removing it so I could sell the car to a CA buyer since it couldn't be smogged (at the very least it would pass the visual inspection).

 

People who SC their 911s probably never use WOT, eh

 

The point I am making is that a NA car already has 500+ psi in the cylinders when firing anyway. You can cruise at 150 mph and not even have any boost from the SC. Running the SC in combination with a reduced maximum rpm not only reduces engine wear but increases the efficiency of the engine. That is why you get better gas mileage. The few seconds that you push the SC's boost into the engine, with a properly tuned system provides all the protection you need from pre-detonation. Addionally, my current setup far exceed what EVO or RUF is offering as far as power goes and I am extremely hard on my car with no indictaions of anything being harmed.

I have run engines for more than 40,000 miles with 12 psi of boost and 9.5:1 static compression. These engine were a fraction of the quality of the Porsche's engine and I had no problems. This was without computer controlled timing.

I doubt we will see any less in the engine life of a SC'ed 996 caused by the blower.