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Not sure about this. The video I posted is a catless Y-Pipe and I don't hear any raspiness.
I meant to caveat my statements with an acknowledgement of the subjective nature of exhaust sound preferences (not to mention the difficulty in describing the exhaust sounds).
In your video I do hear what I refer to as "raspiness". For me, it is the "sh" or "ssssss" sound heard on the drive by.
I must also admit that for the longest time I was telling everyone that my exhaust setup had no drone whatsoever, when in reality I later realized that the tone I enjoyed at certain RPM's was indeed drone!
Last edited by hernanca; 06-01-2023 at 10:32 AM.
Reason: spellin
My understanding is that the raspy sound, at least in US cars, comes from removing the cats. I don't know if having a muffler/mufflers close to the motor in about the same position as cats would similarly attenuate (big word!) the rasp. It would be interesting to hear an early US 928 with cats side-by-side with the Euro version which has a muffler in the same location.
I am not well versed on the early car exhaust systems, so I have the question on whether these are all dual piped from the motor vs single piped as I have also seen on the early cars?
For that V8 burble, I believe an H-pipe used as the balance pipe between the two pipes of a dual piped system will provide more of that V8 burble than an X-pipe, when everything else is the same.
This is not my exhaust but the setup is exactly like in this picture. Albeit my is now better built at the back, with no restrictions under the rear axle and refurbished Ansamuffler. This is original front and middle straight-thru mufflers with the ansa baffle-muffler at the back...
This is something I had in the files. Not the best but at least something else.
If I'm not mistaken, that is an Ansa muffler on your car right? They are usually the only ones with the pipes hooked towards the back. Do you have any pictures of your exhaustsystem? Is it a dual system? Sounds nice..
Something further interesting to me and a bit of a mystery is why these Ansa systems were ordered. The factory Bischoff system is practically indestructible so why were the Ansa systems ordered and fitted? Ansa themselves advertised them as a cheaper alternative, which makes me think they were sold new in the 1990s or something when perhaps the original systems were beginning to show wear. But I still find that a bit hard to believe. I can't see the factory systems going bad back then, so who would have needed the Ansa?
Something further interesting to me and a bit of a mystery is why these Ansa systems were ordered. The factory Bischoff system is practically indestructible so why were the Ansa systems ordered and fitted? Ansa themselves advertised them as a cheaper alternative, which makes me think they were sold new in the 1990s or something when perhaps the original systems were beginning to show wear. But I still find that a bit hard to believe. I can't see the factory systems going bad back then, so who would have needed the Ansa?
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A question: I have never had an original "melonmuffler" beside me. Were they also made of stainless steel like the middle piece? They sit in a "sweet spot" for dirtspray and gravel. If they are made of steel, many of them must have rotted out. And then people changed to a maybe cheaper but beefier sounding ansa-box.? Just thinking out loud here..
A question: I have never had an original "melonmuffler" beside me. Were they also made of stainless steel like the middle piece? They sit in a "sweet spot" for dirtspray and gravel. If they are made of steel, many of them must have rotted out. And then people changed to a maybe cheaper but beefier sounding ansa-box.? Just thinking out loud here..
The Bischoff 'pumpkin' rear muffler is stainless steel like the rest of the factory system. We would need to know when exactly the Ansa kits went on the market, because I just can't imagine the factory equipment rotting out even slightly in the 1980s.
I think the most likely answer is that Ansa made these in-period and precious few, if any, 928 owners purchased one. They were eventually sold off a dusty shelf in a warehouse probably in the late 1990s at the earliest to owners in wet climates needing a new system. Porsche being Porsche and charging an arm and a leg, owners probably ordered these directly from Italy. I have seen quite a number of UK OBs with them fitted in various states of aging, so there is a clue I think.
We could argue a long time about reasons for why anyone would need these ansa mufflers. Just because a muffler is made of stainless steel doesn't mean they don't have to be changed or refurbished. The internals and dampening will break down with time. But I don't think an obvious reason is taken in enough consideration here. People have always wanted to upgrade or change their exhaustsystems. If they were too quiet people have changed them to louder ones. If they were rusting too easy people have changed them into stainless. If they didn't breathe enough people have been upgrading to higher spec'ed ones. Regarding these ansa's, at least on our dual exhaust euro cars, one reason is obvious. Before the x-pipes and such, changing to an Ansamuffler did make it sound great compared to the pumpkin...
This is a car that was sold in new york not so long ago.
A normal 928 with an ansa muffler. I see these time and time again on cars that hasn't been fully restored. They aren't so rare as you might think. Not many companies did make aftermarket systems to the 928 back in the day. So if you wanted a different sound, or
more flashy endpipes these were one of the few you could buy in the 80s and maybe some in the 90s...
Different sound to an ansa-system or? It's hard to compare in the tunnelvideo. Sounds ok, a bit higher in pitch but all frequncies are boosted in the tunnel, including windnoise...
On the dyno would be perfect! I don`t know Ansa systems, on later cars I would consider Supersprint but not a mild steel system.
The GT has also small middle silencer like the early S had for more sound.
06-01-2023 | 10:25 AM
