blackbull

I'm curious what the general consensus is.
Question: Are Porsche turbocharger systems more effective (and cost effective) than the current aftermarket offerings???

What sayest the council?

TT Surgeon

Do you mean an OEM 911 turbo vs a turbo kit installed on a plain carrera?
OEM turbu every time.

Saoirse32

Agreed.

Edgy01

The factory system is always going to be a more 'sorted out' design, with considerations for many factors that aftermarket producers either have not considered, or been unable to foresee.

I had an aftermarket turbo system, by RayJay, on on 1981 911SC, that pushed my power production from 172 to 270 HP. The car would exceed 170 mph and the OEM clutch and brakes were more than sufficient to support the added power output. Porsche over engineers their cars, so you always have room for growth.

Beware of some of the 'late to the party' producers of superchargers or add-on turbo charger kits as often they have not fully engineered their kits. The trade off is generally the life of your engine.

For later cars, for example, a friend had his 2006 Carrera 4S supercharged at great expense. It was such a kludge job that he then wound up have to pay to have it removed and the car put right.

Do your home work.

On the other hand, factory 930s are in great numbers, but being considered 'special' by many USA buyers, were relegated to occasional use on sunny Sundays and items like waste gates, etc., seized up from lack of use. The worst thing you can do as a Porsche owner is to not drive it. These things, like many things benefit from regular use. For my system, I would only 'punch it' after about 20 miles of driving to ensure my synthetic oil (which is highly recommended for turbocharged engines to avoid coking of the turbocharger bearing) was up to operating temp. Ditto for cool down. Never put one away hot.

TT Surgeon

Agree with Dan.

speednme

Is it safe to assume that you are asking whether "stock vs aftermarket". If so it all depends what you are trying to achieve. Stock is greater for value and easier for newer diy guys. The 930 block was used on several Porsche race cars, so 930's can serve as a great starting point for someone with a vision beyond stock. It can and will cost you some coins if you're planning on farming out most of the work but that is not always a bad thing because when the time comes to move on, some buyers(of a modified car) prefer something that was put together by a well known builder than one that was home built. Of course you can always seek out a modified one that has been done to your taste and save yourself some money. Many will say that it is sacrilegious to touch a stock car but it's your choice and your vision. Either way the experience can be a fun one, if you choose wisely.

TT Surgeon

I think he's referring to installing an aftermarket turbo conversion kit on a regular carrera. Nothing wrong with modding a factory turbo.

onboost

Personally, I think the original poster's question was both skewed and vague as to what he's after and what he's building.

Aftermarket turbo conversion kits for a regular Carrera are no big deal these days.. (uhhh, protomotive etc..) far from the old RayJay kludge kits of yester-year

blackbull

Thanks all for the responses. Let me give more info to clarify. I have a 350Z TT @575whip. Would like to go with a 911. Question was posed to help me determine cheapest path to a 5-6 hundred h.p. car. Thinking about which to choose in relative ranking when taking into consideration factors such as forced vs na, model year etc

MUSSBERGER

There's cheap and there's right but there's no cheap and right with the air coolers. If your goal is 500 plus horsepower you're better off starting off with a least a 996tt.

onboost

If you want 500 air-cooled 911 hp then you'll want a properly set-up EFI motor. As Mussberger said, there is no cheap & right.

You should check-out Turbokraft..

TT Surgeon

On boost and mb are exactly right. A 930 is restricted by fuel, cooling, suspension, ignition and age, not impossible to overcome but extremely expensive. If you want a 500hp 911turbo, as mentioned go with a 996/997tt that will run circles around any 930.

speednme

IMO...many that go after high hp on a 930 are attracted to the 930 looks first and power second. There are many cars out there that can achieve high hp numbers for a lot less money than one would spend on a 930 or any Porsche for that matter.