Well I made this up what do you all think of the design?

 

Are those the original heat exchangers???? Looks like your pretty talented man.........is there an advantage to say buying an aftermarket set though???

 

Those are 993 n/a heat exchangers. The passenger's side has the flanges rotated to fit our engines.
I'm in the middle of doing this conversion to my car with Ben's help. I'll post some pictures when I start the install. My car will be the first 965 to use this system so I'm working out a few details on how to do it.

 

Hey thats cool, is there something special about the 993 heat exchangers any particular advantage??

Thanks

 

short runs and a bit larger primaries

 

Also, they're made from 409 stainless so the durability is excellent.
I'm also estimating they'll come in 25-30 Lb. lighter than stock.

 

Great minds....

I've wondered why this hasn't been done before.

Please let me know when you have this project finsihed. I'd love to know what you did for the heat and wastegate.

What material are you using for the short connection piece?



Regards,
Michael

 

I am assuming you are using 2 waste gates in this design? Why not just go twin turbo if your going through all this effort?

 

Yes please! Keep us posted Metal Guru

 

321 SS

 

That collector (Turbo flange) is gonna kill your power. Is it bifurcated (divided) to the turbo??

 

I did a hack "equal length header" with divisable secondary ( in other words the lengths of the secondaries
compliment each other, even though not the same length). With few other mods, got 360 hp/350 tq where the rubber hits the road, not sure how that translates to crank hp, but a bit better than stock.
1991 965 3.3L...

 

Roughly 425 BHP but how is the curve?

 

your kidding, I would have been happy with 400.
How do I upload a graph?
300 tq @3600
300 hp @ 4000
Peak hp @6000
peak tq @ 4000

 

pull was done in 4th, with 1500 rpm rolloff.