daly944

I have a 1987 944na with 28000 miles and an auto trans. In the search for more horsepower, I have explored many options, like buying a turbo instead, but I am a 16 year old male, and insurance is already high enough. I have decided to take a two step approach to supercharging. The first part would inlcude msds cone filter conversion, race headers, test pipe, and a performance chip. Step two would include a non intercooled supercharger kit from supercharging of knoxville. The supercharge alone will give me 237hp, and lots of torque. The other mods should give me about 20 hp, and about 25 ft lbs of torque. This will cost 5100 dollars installed. If anyone has any opinions or experience with any of these products, please reply. Thanks in advance, and wish me luck,
Brendan

Matt O.

Good luck...

But if you're spending 5K on the system, you could probably get 8 or 9K for yours since it has low miles, then you're looking at a decent Turbo.

By the way insurance on a Turbo isn't all that much more.

-Matt

daly944

I have looked at insurance for a turbo, and it would be a little over a grand more a year for me, being that I am a 16 year old male, and I am just so attached to my car, I have already done the interior with new mats, had the whole thing detailed, put in a killer stereo and radar sensing alarm. I would rather shell out the cash to make my current car faster than part with it. Thanks for your input though.

Matt O.

Sounds good to me. Let me know how it goes. I already talked to SOK but they said that they don't SC my car because the compression ratio is much to high. Porsche up'ed it in 89 with the NA 944, 2.7L.

Good luck, and seriously, keep me posted.

-Matt

Matt O.

May I make a suggestion?

Don't chip a NA 944. I have heard that it's completely not worth the big bucks. I think you get like 5 or so hp. Save your money for your SC...

-Matt

daly944

the only reason that I have given thought to a chip is because I am getting a supercharger. I was thinking of having one custom burnt form autothority to provide more fuel flow for my sc.

Matt O.

Copy.

How much money do you have to spend on this project if you don't mind me asking? You say you're 16 with minimal cash flow but that's quite a pricetag after it's all said and done. I'm 21 with minimal cash flow but still looking to get a turbo unless I can swap out my 89 for a 87 or before and SC it. I think that can be done for under 7 grand or so instead of 13 or so on a nice turbo.

Your 944 has 28,000 original actual miles? Cool - how much did you pay for it?

Thanks,
Matt

Jma_1

Daly944,

Can you post the phone number or website for SOK ?

Thanks.

daly944

I've got 5500 bucks to spend on this project. I payed 7500 bucks for my car, and its all original miles. Supercharging of knoxville doesn't have a website, but paul weir, a guy who installs their stuff does. He also has info about their stuff. THe webiste is: www.paulweir.com/rebuild/superchargef.html
sok's phone number is : 423-842-9556
their email is SoKporsche@chattanooga.net

Tabor

I would like to suggest that instead of spending money on Authority you could/should buy an aftermarket engine control system.

Like the Tec II or a MoTec.

Tabor

One more option, for less than $5,500 you can get a 968 engine. That will give you 236HP and 225 ft/lb of torque.

And you could supercharge that!

aka 951

just make sure the kit is not centrifugal

Erick

IceShark

This seems like such a bad idea .... the engines are different, I believe the heads are even a different alloy on a turbo. Going to change pistons? Only going to run a couple pounds of boost without an intercooler? New engine management and sensors? Not to mention the other stuff on the car.

I did see an '88 944 turbo engine in the want ads for $1,800. It is in Germany, though. That would be a better way to go than slapping on a supercharger.

daly944

whats wrong with a centrifugal supercharger?

aka 951

they don't work well with small displacement motors - there is varied success with larger displacement. You should pick up on old copy of Sport Compact car were they tested a Honda Civic with the latest and greatest Vortech. Although it make 270 hp to the wheels, the car couldn't manage better than a mid 14 sec quarter mile.

The problem is that the centrifugal units only put out the big hp and torque numbers at very high rpm. Dinan also supercharges M3's with centrifugal units and these cars are not that much faster than the stock cars even though they have close to 400 hp (compared to 240 stock). Steve Millen also does the same thing with M-B's and they are compartable in their relative sluggishness.

In short, the centfrigual unit incorporates a similar compressor housing to a turbo. At low rpm, the turbo can raise the compressor speeds with exhaust gas while in the supercharger the speed of the compressor is fixed and significantly slower than the turbo. At high engine speeds both work well and are comparable.

If you go for a supercharger, you should strongly consider a roots-type design because your car will benefit most from low-rpm torque. Roots are "positive displacement". Good luck,

Erick