N105DVV

I believe the classic sound talked about here is lost mainly due to the design of the 993 exhaust system to pass the relevant noise regulations.

Although the system has dual pipes they are combined in the catalyser housing and henced balanced which reduces the sound output.

I have a TechArt GT exhaust system, including headers, which does not combine the output from both banks. The sound is unreal...

Regards

Phil...

Flying Finn

Here's the AJ's AutoCAD template:

<a href="http://boards.rennlist.com/upload/airbox_holes.dwg" target="_blank">Airbox holes</a>

I think partly the 'missing' sound on newer engines is the engine size also. Not mechanical sound but exhaust note, my old 2.7 defenately had raspier, more high exhaust note than what my 993 has and it's mostly because of the engine size, I think.

kuhl 993

Ok,

I think we should have an "old Porsche" sound contest. All who wish can enter, no rules apply, and see who can come closest to that classic sound we all yearn for and love.

We can do it in person or via wave files <img src="graemlins/bigok.gif" border="0" alt="[thumbsup]" />

Kuhl

Kabel

<img src="graemlins/beerchug.gif" border="0" alt="[cheers]" /> Been interested in collecting "Porsche" sounds for quite a while. It would be great to use them to enhance desktop themes with pics of my p-cars and those of my friends not to mention the personal touch for the themes. Also, instead of writing about the vague differences between the sounds generated by the muffler products and engine setups, other could hear and decide for themselves what modifications are worth trying to achieve the sound they want for their own vehicles. Question is...how does one go about collecting, making and storing these sounds? What equipment is needed? Anyone know a source of info on this?

spinning disc

speaking of porsche sounds: did any of you guys see that tweeks now sells a retrofit kit for 996-911s: for $1400 you can buy a set of headers tuned so the 996 sounds more like a 993.

made me laugh. you hafta wonder how many will opt for that.

i heard a 996c4s the other day on the entrance ramp to the masspike and it must've had the motorsound/sports exhaust package. it sounded awesome at WOT.

Steve Weiner-Rennsport Systems

[quote]Originally posted by kuhl 993:
<strong>My favorite Porsche sound is from the early 80 SC's to late 80's models. You know, that higher pitched "mechanical whine." At what point (model/year) did this go away? Does anyone know what caused it and why the later air cooled models dont have it?

Just curious.

Thanks

Kuhl </strong><hr></blockquote>

Kuhl:

The sound signature of all of the various 911's comes from combinations of induction noise, mechanical noise, exhaust and cooling fan noise.

That latter one is the main source of that "whine" and when Porsche adopted the quieter curved blade fan on the 3.6, this really changed the sounds of the engines. Note how similar the 993 TT is to the earlier cars, due to the straight-bladed fan.

Although there are other factors at work here, fan speed, muffler design, engine displacement; you might achieve what you are looking for by installing the TT fan assembly on your 993.

Flying Finn

[quote]Originally posted by Steve Weiner-Rennsport Systems:
<strong>...Although there are other factors ar work here, fan speed, muffler design, engine displacement; you might achieve what you are looking for by installing the TT fan assembly on your 993.</strong><hr></blockquote>

Steve,

How big of a job that would be? Can a fan be removed w/out fan housing removal & how much fan costs?

Thanks!

Steve Weiner-Rennsport Systems

[quote]Originally posted by Flying Finn:
<strong>

Steve,

How big of a job that would be? Can a fan be removed w/out fan housing removal & how much fan costs?

Thanks!</strong><hr></blockquote>

FF:

You must get access to the back of the fan and remove the whole assembly: alternator & fan to swap this out.

Its not too tough,....

Flying Finn

[quote]Originally posted by Steve Weiner-Rennsport Systems:
<strong>

FF:

You must get access to the back of the fan and remove the whole assembly: alternator & fan to swap this out.

Its not too tough,.... </strong><hr></blockquote>

Thanks Steve!

Doesn't sound too tought but only for get little more whine... I think I'm nuts...

kuhl 993

Steve,

Thanks for your very informative reply. The fan blade idea sounds interesting....sounds like a new "mod" for the board

I will look into it.

Kuhl

neunelf

I could see myself replacing the fan on my car to that of a TT fan.

One thing I don't want to loose is cooling efficiency.

Steve, is the TT fan more effective at moving air to the engine?

993RS

And another question: Why does the 993TT have a different fan?

Pete in DC

Ah, the slippery slope to reverse-engineering an SC from a 993!

Pete Lech

Personally, I was glad to get rid of the engine fan whine when I went from a '85 Carrera to my 993. The RSR mufflers and drilled airbox are just perfect for me. Want more sound? just floor it!

Viken

It appears that Porsche had three different fans for the 993. All of which have 964 part numbers. One was used for the NA models and came from '93-on 964 NA engines. Another installed on the 993 Turbo up to model '95 which came from the 964 Turbo 3.6. And, a third one for the Turbo from '96-on not shared with any 964 model. The 993 NA and Turbo models also had different fan housings and straps.