99 Turbo Rallye-Kit?

Okay. As no one seems to know about it I assume it is a myth.

Anyway, I would like to find out which parts were used to build the group 2 engine for the 99 Turbo in the late 70s. 🙂
So to say, kind of recipe to build one, and if parts are readily available, where from.

From what I found out so far SAAB used the standard engine-block, crankshaft, rods, and cylinder-head.
Pistons were some forged Mahle or something with compression-ratio 6.5:1.
I assume the cylinder-head was nearly standard with ported channels? Bigger valves also?
Camshaft is said to be from EMS.

For the intake-system they used a Porsche 911 air-flap together with a Porsche 928 fuel-distributor, where they joined two exits with a t-piece to feed one injection-valve.
Does anyone know the BOSCH-numbers for these two Porsche-parts SAAB used?
And which injectors were used?

Intake-manifold seems to be a normal one for Weber-DCOE-carburettors, but with small tubes welded on to fit the K-Jetronic injection-valves. Throttle-flaps for each cylinder put in between the collector-plenum and the DCOE-manifold, something like cut-off DCOE-carburettors.
The plenum is water-cooled, but although I know some pictures from the car in the SAAB-museum I didn’ figure out so far how the cooling inside was done?
Is there a normal radiator in it? Which is then connected with the heater-core or with an extra cooler at the front.

I read in an old article that SAAB used first the Garrett T3-turbocharger from the series-car with modified, bigger compressor.
Exhaust-manifold was a special weld together made from some tubes and flex-tubes, with external wastegate sitting on it and bypassing from the manifold to the downpipe.

Well, that is a lot of information and a lot of questions. But I hope we can clarify some of them.

Thanks for any input here on this subject, or by PM or Email.

Tack!

Med vänliga häsningar,
Erik

Yes, please! 😀

/Erik

Hej!

Does anyone know the BOSCH-Numbers of the injection-parts that were used by Saab?

I heard about the air-flap-part of the K-Jetronic being from some Porsche 911 and the fuel-distributor from Porsche 928?

Anyone know the proper numbers?

Tack sa mycket!

Best Regards,
Erik

Hej!

No, I wont use the original inlet-manifold. 🙂

Would be nice if you can check the numbers.

I checked some pictures of Porsche 911 and 928 K-Jetronic. A small problem on the 928 air-flap woul be the position, where the outlet-tube is positioned (the tube, where the air is going to the motor). On 911 it is positioned on the side, on 928 in line.

Tack!

/Erik

Hej!

Okay, I see.

So a K-Jetronic from Porsche 928 would do the job? I assume it is 928 4.4l? BOSCH-Number? 🙂
Or is there an important difference between air-flap 911 928?

Does anyone have pictures from the custom air-flap outlet?

Tack!

Best Regards,
Erik