Why is this not mine supercharged 944 S2 engine ?

Chriz75 · 05-12-2005, 11:51 PM

Hi,

What do you think about this engine ?
Supercharged Porsche 944 S2 for you who doesn't see that!

These guys have their shop just a couple of miles from me and I have asked how much this mod costs. They said depending on the spec I want it would cost between $7000 to $16000. The pictures are the more expensive mod.

See their home page(in swedish), bottom of the page is the S2:
ENEM

The S2 delivers 380 horspowers!

More pictures:

Does anyone want to sponsor my engine upgrade to this one ?

An Autorotor screw type supercharger with a water cold intercooler... mmm ...

My self I was thinking of adding a Eaton M62 with a low boost, around 5-7 psi and adding a 951 intercooler.
But I'm currently installing my Pro M MAF so that is taking all the time for the moment. I have built an own converter with a PIC processor. It works in a simulated environment now I just need to buy the real hardware.

bryanthompson · bryanthompson's Garage

Wow, that's totally crazy.

OT: What software are you using for your PIC simulation? Are you using c or assembly to program it? I just bought a pic programmer and am looking for the best software to use for learning to program on it and whatnot... Life would be way easier if I could use Java, but... that's not possible.

Chriz75 · 05-13-2005, 12:41 AM

I have used microchips free developent environment. I use assembler but I think you can use C with theirs environment but not for all PIC processors.

Microchip

Zero10 · 05-15-2005, 06:33 PM

I use MikroBasic for PIC programming, free upto 2000 bits (or is it bytes) of compiled code, enough for projects like this.
I then bought a programmer from qkits.com (since they're canadian, it's cheaper for me) to program the PIC's.
It all works pretty well.

Exactly what MAF are you using? I'm thinking of doing a MAF conversion when I get a bit of free time, working on a temperature monitoring system right now.

d993 · 05-16-2005, 01:45 AM

Quote:

Originally posted by Chriz75
Hi,

My self I was thinking of adding a Eaton M62 with a low boost, around 5-7 psi and adding a 951 intercooler.
But I'm currently installing my Pro M MAF so that is taking all the time for the moment. I have built an own converter with a PIC processor. It works in a simulated environment now I just need to buy the real hardware.

The Eaton M62 is way too small for big HP gains on a 944S2 motor, and it's not very efficient.
The most efficient superchargers (by far) are the Whipple superchargers.
If you go with a Whipple 2300AX, (it costs about $1800 and is also Swedish made), you can expect a 120-130hp gain with only 6-7psi on a 944S2 with stock compression.
Of course you have to build your own brackets and piping.
And you'll also need some type of piggyback fuel enrichment or programmable MAF, and good intercooling or water injection.

Chriz75 · 05-16-2005, 02:37 AM

Yes I know that the Eaton M62 is not for big HPs, but I think it would work ok for 5-7 psi with stock compression and an 951 intercooler. It should give something about 70-100hp gain. The only reson for making the M62 choice is that it is fairly cheap.
In the pictures there is an Autorotor which is equal in function to the Whipple supercharger(both are screw types, Lysholm).

I know that the screw is much better supercharger than the roots blower, but they are more expensive.
I think the fuel management is the biggest issue when building a supercharged engine. New injectors and fuelpressure regulator is one small step then reprogramming the maps and the MAF.
But this project is only a dream just for now...
Change to the MAF is the first step which I'm working with right now.

I'm trying to find an intake temp sensor that would match the specs for the internal AFM sensor. I think I might go with a GM one because they don't differ to much from the specs of the orignal tempsensor.
Maybe someone here knows where to find an IAT or VAT sensor that matches the internal one in the AFM ?
I'm not going to remove the sensor from inside the AFM.

d993 · 05-17-2005, 07:37 PM

You're right, the Eaton is much cheaper. I can get one for about $450.
The AFM you would want to use is one from a 968, or from a 928 S4, GT, or GTS. They are capable of measuring alot more air than the old barn-door style flow meter.
Good luck with your project.
Let me know if I can help. I've been playing with these cars for a while now, and I've learned quite a bit and have a lot of parts.
Parting out 5 968's, 2 944S2's, and 1 964 Cab

Chriz75 · 05-17-2005, 10:55 PM

Does the 968 AFM fit the 944 S2 without modification ?
I have started to do a modification to get a Ford(Pro M) hot wire MAF to work with my 944 S2.

I have not yet change anything in my wire harness but I have made a converter that will record the transferfunction of the AFM and the MAF and then let the MAF emulate the AFM function. I have also added four potentiometers to fine adjust the low, mid, high and under acc. But it is not ready yet. Some work is still to be done...

d993 · 05-17-2005, 11:31 PM

It appears you have some knowledge about these mass flow sensors........
I assume you're using the Mustang Cobra, or Lightning Truck MAF.
Great options.........I've used them in the past on Z-cars (300zx Turbos) with great success.
That was a while ago (a couple years). I'm, not an old man (only 30y/o), but I've been playing with Audi's, VW's, and Porsche's since I was 16 or so.
Back in 1993, when I was 19, I had a '87 Audi 5000CSQ that I modified with (among other things) 19psi of boost, which was unheard of back in 1993. Everyone was against what I was doing, claiming that the engine would "blow up" soon, but the car ran fine for over 25k miles until it was wrecked by a friend of mine.........
I took the necessary measures to counter the additional boost, and it also helped that I wasn't afraid to experiment.
I've destroyed 2 Nissan/Datsun engines, and 1 BMW engine in the past, but never a VW/Audi/Porsche engine.
My uncle and I may have been the 1st to do a VW G60 swap in a VW Rabbit pickup truck back in 1991. He won a few trophies (which he still has) at a couple of the local spectator racing events we had here in Georgia back in 1991-1993.
Those were the good old "exciting days", where we came up with a idea and made it happen by simply daring each other to do it!!!
Definately no time or patience for the simple and common "monkey see, monkey do" ideas with these cars..............