This may seem like sort of a strange request, but is there a good resource for finding internal diagrams of the engine and turbo set up int he 955 twin turbo? I'm kind of a geek about this kind of stuff and I'd like to know more about the specifics.

One thing in particular I'd like to know is what kind / size are the turbos? I'm also very interested in learning about the exhaust flow (from intake to exhaust manifold).

Thanks!

 

Any ideas? How something as simple as the stock boost level?

 

.6-.7 bar ish

convert to psi by taking bar/.069

ex: .7/.069 = 10.15 psi of boosty

Turbos are too small!

 

Ha! Nice! So, around 8 - 10 psi?

And that stock boost gauge... pretty accurate?

 

haha NO. I put a better one in. The stock boost gauge has very slow response as well.

 

Of course, OK. That's pretty typical.

I'm just a geek that likes to know how the vehicle I drive works. I'm no mechanic, but I can mentally tear-down and rebuild pretty much any Subaru. Kinda shocked by the lack of discussions / info I can find on the topic for the Cayenne.

 

I'm the same way..I like to tinker and be a little educated about whats going on.

The turbos are I believe IHI-RHF5 ball bearing turbochargers (~I think). And they are pretty unique, the housings at least to the Cayenne. Maybe next summer I'll be able to get some manifolds made and some turbo upgrades put in there!! And I see you're in Denver too. There are some pretty cool Cayenne owners in Colorado. So maybe some meet ups.

 

IH? Or IHI?

Yeah, meet-ups are cool. Pretty used to them coming from the Subaru community. Is there a section on here that localizes members?

 

Ah, here's something:

https://www.6speedonline.com/forums/...ock-turbo.html

 

OK, it appears they are actually IHI RHF5's.

Interestingly, it would appear that this thread is saying a TD04 is an upgrade (last post):

https://www.6speedonline.com/forums/...-chargers.html

Looks like you already know that though, huh?

If that's true, I think I might have one or two off of a couple Subies just lying around somewhere... Ha.

 

The Porsche PET program has lots of exploded diagrams. Mainly for parts identification, however, I have used them before to understand how certain parts are assembled.

 

Is that this?

http://www.porsche.com/usa/accessori...artscatalogue/