993 RS mufflers
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Nordschleife Master
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993 RS mufflers
Anyone know how these differ from the standard 993 mufflers?
<a href="http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2406203759&category=33636" target="_blank">RS mufflers on eBay</a>
<a href="http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2406203759&category=33636" target="_blank">RS mufflers on eBay</a>
Rennlist
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From: Chino hills, CA
David,
The RS muffler that comes with the 993 3.8 motor kit, or ones from a factory 3.8 RS is different from a standard 993 muffler.
The difference is that the 993 RS muffler is missing the internal by-pass tube, which makes them even quiter than the standard 993 muffler.
The reason for this is because in order for the 3.8 RS and the 3.8 motor kit to pass Europe's drive by noise regulation it has to be quieter, since now the motor is bigger so the muffler must muffle more noise.
Below is an internal picture of a standard 993 muffler and a motor sound muffler, Porsche increase the diameter of the by-pass tube to make the motor sound muffler sound a little louder.
<img src="http://p-car.com/exhaust/mufflercomparet.jpg" alt=" - " />
The RS muffler that comes with the 993 3.8 motor kit, or ones from a factory 3.8 RS is different from a standard 993 muffler.
The difference is that the 993 RS muffler is missing the internal by-pass tube, which makes them even quiter than the standard 993 muffler.
The reason for this is because in order for the 3.8 RS and the 3.8 motor kit to pass Europe's drive by noise regulation it has to be quieter, since now the motor is bigger so the muffler must muffle more noise.
Below is an internal picture of a standard 993 muffler and a motor sound muffler, Porsche increase the diameter of the by-pass tube to make the motor sound muffler sound a little louder.
<img src="http://p-car.com/exhaust/mufflercomparet.jpg" alt=" - " />
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Nordschleife Master
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Thanks for the explaination, Robin.
btw, on another thread I asked how long was the current wait for a set of RSRs - weeks? months?
Also, I think I have Motorsound mufflers (don't know whether they are Gillets or Bishcoffs) - does "RSRing" these make them sound any different than your "normal" RSRs???
TIA
btw, on another thread I asked how long was the current wait for a set of RSRs - weeks? months?
Also, I think I have Motorsound mufflers (don't know whether they are Gillets or Bishcoffs) - does "RSRing" these make them sound any different than your "normal" RSRs???
TIA
Rennlist
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From: Chino hills, CA
David,
The wait time is depended on the brand of your core mufflers that's on your car.
Bischoff - 8 weeks
Gillet - 2 weeks
The sound level of the mufflers after the RSR modification sounds identical, regardless if they are made from the standard 993 muffler or the motor sound mufflers. I personally couldn't hear the difference since I had installed one of each on my own car for testing, but I've had few people that had reported some minor difference.
The wait time is depended on the brand of your core mufflers that's on your car.
Bischoff - 8 weeks
Gillet - 2 weeks
The sound level of the mufflers after the RSR modification sounds identical, regardless if they are made from the standard 993 muffler or the motor sound mufflers. I personally couldn't hear the difference since I had installed one of each on my own car for testing, but I've had few people that had reported some minor difference.
Rennlist
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From: Chino hills, CA
Kim,
The only reason why I know that the RS muffler is missing the by-pass tube is because I had converted a set to the RSR muffler
Just to play it safe I added my own by-pass tube in there and there was no sound difference compared to other RSR mufflers after the modification.
So I am not exactly sure if missing the by-pass tube would make any difference. I didn't want to take the chance.
The only reason why I know that the RS muffler is missing the by-pass tube is because I had converted a set to the RSR muffler
Just to play it safe I added my own by-pass tube in there and there was no sound difference compared to other RSR mufflers after the modification.
So I am not exactly sure if missing the by-pass tube would make any difference. I didn't want to take the chance.
