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-nick
Joined: 16 Nov 2002
Posts: 2699
Location: Cambridge, MA
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 Posted: Wed Sep 29, 2004 12:12 pm Post subject: How loud is your whistle? |
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Hey folks! I'm just finishing up with a move to the big city of Boston- I've been too busy to check out the board for a little while.
Anyway, after finding that the wastegate control was not tight the other day, I tightened it up and now I don't have much/any of that great turbo whistle sound. Don't worry, it didn't seem to be leaking enough to give me crazy boost, but I bet the turbo is working somewhat less now.
Just wondering how loud some of your beasts whistle under boost? I can hardly hear anything coming from the turbo at all now (yes, it does still build boost!).
-nick |
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Lizard
Joined: 03 Nov 2002
Posts: 9364
Location: Abbotsford BC. Canada
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| Posted: Wed Sep 29, 2004 1:09 pm Post subject: |
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under stock boost, the wistle is almost completely unheard.
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3 928s, |
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SoyRacer
Joined: 25 May 2003
Posts: 156
Location: Long Island, New York
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| Posted: Wed Sep 29, 2004 7:53 pm Post subject: |
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My 81 Euro Sounds "Just Right" At One Bar.
The Whisle Is Just Enough To Let People Know Not To F*ck With It.
Oh, Also Had A Chance To Run Her On The Dyno. After A Few Runs And Adjusting Timing/Fuel And An Ice Bag On The Intercooler We Saw A Very Respectable 215-HP. Cool Huh 
_________________
1973 911-RS 3.2 Track Car
1981 Porsche 931/Carrera GT Project
1981 Porsche 931 Euro W/CGT Intercooler
1984 Porsche 944 Gutted Track Car
1987 Porsche 924s Rally Style (sold 3-2012)
2000 Chevy C-2500 Pick-up
2004 Subaru Forester STi |
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Khal
Joined: 26 Sep 2003
Posts: 4872
Location: Sunny and lovely interior BC, Canada
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| Posted: Thu Sep 30, 2004 5:09 pm Post subject: |
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Mate, is that rear-wheel horsepower SoyRacer?! 
Even at the flywheel that's pretty impressive!
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'80 924 Turbo |
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SoyRacer
Joined: 25 May 2003
Posts: 156
Location: Long Island, New York
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| Posted: Thu Sep 30, 2004 8:24 pm Post subject: |
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| Khal wrote: | Mate, is that rear-wheel horsepower SoyRacer?!
Even at the flywheel that's pretty impressive! |
I Have To Admit It.. We Only Made 195-HP To The Wheels. But If You Figure In An Additional 11% For Driveline Loss You Would Be Somewhere In The Neighborhood Of 215-HP.
I Was Surprised And Pleased But I Do Have To Also Admit To Cheating A Little On That Particular Run. It Was Closer To 1.1 Bar  . |
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Lizard
Joined: 03 Nov 2002
Posts: 9364
Location: Abbotsford BC. Canada
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| Posted: Fri Oct 01, 2004 3:11 am Post subject: |
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actually Soyracer, you dont take a 11% drivetrain loss, you should be taking a 15% drivetrain loss, so you were abit higher at the crank than you thought.
very nice, and that is 1.1Bar, how efficient is your IC supposed to be?
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3 928s, |
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SoyRacer
Joined: 25 May 2003
Posts: 156
Location: Long Island, New York
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| Posted: Mon Oct 04, 2004 8:20 am Post subject: |
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| Lizard wrote: | actually Soyracer, you dont take a 11% drivetrain loss, you should be taking a 15% drivetrain loss, so you were abit higher at the crank than you thought.
very nice, and that is 1.1Bar, how efficient is your IC supposed to be? |
I Guess I Should Have Also Mentioned That I Only Run 110 Octane Leaded Race Fuel In This Car. Yeah, I Know..... This Guy Is Crazy With Fuel Costing Over $7.00 A Gallon! But As You Can See, It's Worth It. (I Only Get To Drive This Car Once Or Twice A Week If I'm Lucky)
Anyway, I Usually Only Calculate 11% Due To The Fact That I Like To Be Conservative With HP Figures And This Dyno Has Been Very Optimistic At Times In The Past.
I'm Not Sure Just How Efficient The Carrera GT Intercooler Is "Supposed To Be" But I Have Ducted It Very Well After The Scoop And The Power Level Drop Off Without It Is Very Noticeable.
_________________
1973 911-RS 3.2 Track Car
1981 Porsche 931/Carrera GT Project
1981 Porsche 931 Euro W/CGT Intercooler
1984 Porsche 944 Gutted Track Car
1987 Porsche 924s Rally Style (sold 3-2012)
2000 Chevy C-2500 Pick-up
2004 Subaru Forester STi |
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Glen931
Joined: 11 Mar 2005
Posts: 52
Location: Grants Pass, Oregon
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| Posted: Sat Mar 12, 2005 5:08 am Post subject: |
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I ran my car with just the downpipe ( no muffler or cat) for a couple weeks and the turbo was incredibly laud. It still has a nice amount of turbo nouse through the magnaflow straight through muffler and no cat (oregon emmissions package)
_________________
"Nitrous is like a hot chick with an STD, you know you want to hit it, but you are afraid of the consequences"
1980 porsche 931 beige
1987 Porsche 951 red, 51kmiles.. prefect cond.
1978 ford fairmont wagon 2.3 turbo engine |
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