Anyone have good pics of a euro 930 exhaust?

[david.avery]

Hey all

Looking for pics of a euro 930 exhaust. I'm thinking that it shares the heat exchanger parts with the carrera, judging from the pic that Rarleyl8 posted on this thread:

GHL headers worth it?

As I have the somewhat restrictive US Carrera headers on my protomotive stage 1, I was thinking that if the header parts of these were compatible that I might use them and get a boost. I would not use the crossover tube, but use the headers that collect into the common pipe as shown in the post above. Does anyone know if this will work? Here's the pic from the post I list:

[david.avery]

Or, to add to this, does anyone know of a high performance arrangement that keeps the standard config of stock carrera headers (merge as shown above)? I need to keep it like this to accomodate the turbo "J-pipe" setup I am using (check my sig)

[RarlyL8]

Here is a pic of my Euro exhaust before assembling. The heat exchangers (I am told) are the same units used for N/A Carreras. They certainly look the same.

If in doubt you can purchase a complete Euro 930 exhaust for $500 or less from what I have seen.

[david.avery]

Cool! thanks Rarly... You wouldn't know if their was a major difference between the US and the euro's would you? I know people go to them for more power on the 930, I didn't know what the fundamental differences are.

[RarlyL8]

There is a HUGE difference in the US vs Euro pre-'86 930 exhausts.
I have a picture of the stock exhaust that was removed from my engine when I bought it. I will post it for you later.

The Euro exhaust is considered a manditory upgrade before you can bolt on any other performance item on those US cars. The US exhaust alone drops the 930 from 300HP to 265HP. No mods will be effective unless the engine is allowed to breath.

The difference between the Euro exhaust (on a stock engine) and aftermarket headers is not significant. You probably need to go past the 450HP range with mods before you "need" headers. At $2500 vs $500 you make the choice.

[RideShoot&Drink]

I have an 87 engine and going from stock exhaust to full GHL system with heat made a world of difference...my 02 cents.

[RarlyL8]

Found a picture of the US smog exhaust in the classified section for you.

Yes, you should see a huge difference in your '87 930 going from stock to headers. You would also see a huge difference going from a stock exaust to the Euro exhaust. The stock Euro 930 put out 300HP from 1978 on. The US 930 did not hit 300HP until 1990 !! Sad state of affairs. Strap on a Euro exhaust to any US 930 engine and you receive your stolen HP.

[RideShoot&Drink]

Rarly, that is a scary picture...don't mean to hijack the thread, but how's 915 surgery going, have you decided which route to take? I also run 915 with otherwise stock 3.3 (minus exhaust). Knock on a wood runs fine so far...Would like to know what are the options out there...

[89turbocabmike]

Rarely, I was under the impression that the 87-89 turbos used the euro style exchangers and that the hp difference was due to the US cat/muffler system?

[RarlyL8]

Yes, the '87-'89 US 930 did use the Euro heat exchangers but not the Euro exhaust. The US cat/muffler continued to steal horsepower.
When I say that you can bolt on a Euro exhaust to your US 930 and get an instant 300HP I am referring to the entire exhaust system. I should have clarified that.
It is interesting to research the "advances" made in horsepower for the US 930 from 1978 to 1989. The US models made the switch to Euro heat exchangers in '86 but plugged the system up with smog crap. Each year after they added items that freed up a little more air flow until '89. That last year the engine put out 282HP with a cat. All that time and they still had not reached the level achieved by the free-flowing 1978 exhaust. Seven years later the 1997 993 varioram 3.6 N/A was laying down the same 282HP. Porsche got a lot of mileage out of that 3.3L CIS turbocharged engine.

RS&D - my 915 goes back together Saturday (11/5). I've been out of town and just could not get to it. The only "repair" made was to change out the carrier bearings. It's a shot in the dark and probably wishfull thinking. My side plate cover may be warped or I could have a damaged pinion bearing. I hope this quick fix buys me some time before I have to go inside the tranny. As I have said before, it is not economically wise to fix a broken 915 unless I get lucky and the broken part is cheap and something I can fix myself.
Thanks for asking.

Your options? It's simple. Don't drag race. My 915 would have lasted behind 400HP for many many years if not for that one moment of indescretion.

[david.avery]

Thanks for the info Rarly. My thoughts were, my proto stage1 is supposedly boosting late due to the stock headers of the 84 carrera, which are not thermal reactor type, but more like what you posted. They collect exactly the same. My thoughts were to use euro 930 HE, as they put the flange right where my particular J-pipe protomotive stage 1 needs it.

In retrospect, my options would have been much much greater had I gone with the rear mount. I think I was warned a few times, but heck, I'm still happy.

[RarlyL8]

Glad I could help.
What is a rear mount?
Many things affect boost lag and threshold, the exhaust is just one of them. Have you seen the aftermarket turbo systems that mount the turbo in place of the rear muffler? Talk about a long path!!

[david.avery]

Rear mount is where the 930 puts it, side mount, puts it in place of the cat.