Why Porsche doesn't supercharge...

gosla · 08:09 AM

Helllo;

Been researching the pros and cons of turbocharger coversions versus supercharger systems.

Aside from the early days with Cisitalia and Auto Union, has Porsche produced any cars with superchargers? If not, are there any facts or opinions out there as to why?

Also, what about hybrid turbo/supercharger systems. I recall the likes of Toyota messing around with these. Any Porsche people go this route?

Finally, another opinion question: I have a 80 euro SC and I'm considering a budget of $10,000 for an engine or engine work. What would you do? As for now, I'm leaning towards a used, possibly Ebay factory turbo engine. What would you do? Hearing acceleration described as "violent" sounds good to me. I'm leaning towards more of a "sleeper" look. Stock body with the addition of a tail. Blinding horsepower under the lid...

Anyway, any info would be most appreciated...

NSA
Hazleton, Pennsylvania - Land of the underbudgeted ricers, 4x4 Camaro conversions & people with dubious taste in machinery...

Also, here's a pole that may prove to be interesting...

tryan · 11-18-2002, 08:36 AM

mercedes /amg is offering blower motors now. the 3.2 supercharger rivals the 5 liter in hp and torque(v6's suck). ford and nissan have a few superchargers out there. turbos are not as violent (off/on) as they used to be, but you (or anyone else) must respect the cool down cycle and religious oil changes.( i get to drive a 930 a few times a year. talk about lust.) i think blowers are easier/seamless on the motor and driver, but alas no one has give me the keys to one. read this month sedan comparison in automobile.the m5/rs6/e55 vs that fordcoventry thing. there is no substitute for cubic inches. stick a 3.6 in. my opinion.

alertmike · 11-18-2002, 10:40 AM

The setup on my 911 produces 6psi which sufficient boost for 323HP at the wheels. Does not run hot during DE. Great alternative to turbo.

Lothar · Lothar's Garage

You could do a lot for 10k if you rebuild/upgrade. However, it depends on what you plan to do with the car. For mostly street use, you probably would do better with a 3.6 swap. Call Dr. Timmins.

island911 · 11-18-2002, 11:34 AM

Quote:

Originally posted by gosla
Helllo;

Been researching the pros and cons of turbocharger coversions versus supercharger systems.

Aside from the early days with Cisitalia and Auto Union, has Porsche produced any cars with superchargers? If not, are there any facts or opinions out there as to why?. . .

Entropy.

A turbo is an exhaust driven supercharger. As a system, the turbo will be more efficient. The belt-driven supercharger pulls power out of the crank. The turbo makes good use of the exhaust. Which, BTW, has not usually completed its' combustion fully when it leaves the cylinder. With the combustion continuing past the exhaust valve, why throw it away to the entropy gods?

tryan · 11-18-2002, 02:17 PM

island, are not all of us just random acts of chaos ? or is that enthalpy

eion · 11-18-2002, 02:19 PM

Sounds like you could do a lot worse than a 3.6 conversion.

gosla · 11-18-2002, 03:37 PM

Seems to be a lot of support for all of the options I named. As far as the 3.6 conversion goes, what sort of power/torque is to be expected?

Although I'm sure there will be a lot of high speed highway driving, from time to time, mostly I'd be in rural city driving situations, blowing off some steam on back roads, etc.

I am lightening the car. With a budget of 10K for the engine/transmission, what kind of funds should be left over, if any, for improvements on the 3.6?

NSA

Hazleton, Pennsyltucky...

eion · 11-18-2002, 04:08 PM

Quote:

Originally posted by gosla
Seems to be a lot of support for all of the options I named. As far as the 3.6 conversion goes, what sort of power/torque is to be expected?

Power and torque as for a stock C2/C4 - 241HP or so, I can check the torque specs if you care.

JonT · 11-18-2002, 05:26 PM

I've done the 3.6 conversion on my car. It was well worth it for me. With a chip and free flow exhaust hp is around 275 hp. The torque curve is very flat and I'm guessing the 0-60 times are down around 5 seconds or less and the car is an absolute beast. I will send you a detailed listing of expenses and the name of my engine supplier if you are interested. $10k to 12k (possibly less if your engine is in good shape and you don't do the chip upgrade right away) is the expected budget for this conversion provided your engine is saleable. My email is Jon.Theobald@bp.com.

dean · 11-18-2002, 05:57 PM

I believe that Porsche use turbos because they produce more hp than a super does. Turbos are also more efficent at making that power.
I put a 3.0 turbo in my car. I am very happy with it. I think if you want to go turbo the cheapest way to do it would be a factory 930 motor. It ain't cheep though. I don't think you would have any $s left.