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Registered
Join Date: Jul 2005
Location: Ohio and Florida
Posts: 267
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quick..if your bored.. question
So what happens if I run my 2.7 with ssi and no muffler? Why would I want to do that you may ask? Because I have a rattle that is assumed to be in my old Bursch muffler{baffles rotted} and would like to remove and see if the noise goes away. I realize having no muffler is going to make its own noise, but will help me know for sure if the noise is coming from the Bursch. Can there be any ill effect to the motor from a short or long term run without a muffler, just open SSI's 76s CIS 2.7 With recent partial rebuild. Thanks for any input or other threads you could point me towards.
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76 911/2.7/SSI/2in 1out/tensioners/Ice Green Targa 01 Suburban 02 Jeep Liberty WillsWings Eagle "As I hug the mountain tops in my hang glider, the only distraction Is looking below at the roads I will hug with my 911 " |
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Registered
Join Date: Feb 2003
Location: Bay Area, CA.
Posts: 2,048
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I have the exact same problem, I had this confirmed by a mechanic. He confirmed that I had a cracked baffle inside the muffler.
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A freind of mine with a 993 Turbo was considering a FabSpeed muffler bypass but wanted to get a feel for the sound. So he took the muffler off and ran the car around the block a few times. Other than the annoyance to his neighbors he did no engine damage. However the puddle of melted rubber on his driveway and the hole in his lower bumper valance is another story. Exhaust gas is hot!
I don't think it will harm your engine though.
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'88 Carrera Cab 3.2 Diamond Blue Metallic - ERP Polybronze Bushings, ERP Monoballs, SW Chip, Bilstein Sports, 930S Steering Wheel, DAS Rollbar, Sparco 5pt Harness, Hunsaker Sport Seats, Dansk Pre-Muffler, MK 1in-1out Exhaust, Magnecor KV8.5 Wires '86 944NA, Sunroof Delete, Track Rat, Full Cage '72 914 1.7 Guards Red / '02 Audi S4 Light Silver Metallic |
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Driving member
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I would think it would be so loud you would not tell if there is a rattle or not except maybe your teeth.
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Jerry '86 coupe gone but not forgotten Unlike women, a race car is an inanimate object. Therefore it must, eventually, respond to reason. |
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Not trying to hi-jack the thread but.......
It looks like alot of "bored" Porsche owners in Marietta today ![]() Seriously, other than the heat and the fumes (if you are going to go driving) the engine should be OK. It's basically what any racecar exhaust is doing.
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'88 Carrera Cab 3.2 Diamond Blue Metallic - ERP Polybronze Bushings, ERP Monoballs, SW Chip, Bilstein Sports, 930S Steering Wheel, DAS Rollbar, Sparco 5pt Harness, Hunsaker Sport Seats, Dansk Pre-Muffler, MK 1in-1out Exhaust, Magnecor KV8.5 Wires '86 944NA, Sunroof Delete, Track Rat, Full Cage '72 914 1.7 Guards Red / '02 Audi S4 Light Silver Metallic |
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Back in the saddle again
Join Date: Oct 2001
Location: Central TX west of Houston
Posts: 55,956
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You'll probably want a couple of short pipes attached to the end of the SSI's to carry the exhaust out from under the bumper. Other than that, it's going to be really, REALLY LOUD!!!
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Steve '08 Boxster RS60 Spyder #0099/1960 - never named a car before, but this is Charlotte. '88 targa ![]() |
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I've ran my fabspeed muffler delete pipe for a couple of months. Doesn't hurt a thing... except dogs, neighbor's ears, harley dude's ego's... etc. Love that deep sound... throttle response is better too.
-Troy 86 Carrera
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1986 911 Coupe (Guards Red), Fabspeed Euro Pre-muffler, Steve Wong Performance Chip 2001 Boxster 2.7L (Orient Red), bone stock |
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Registered
Join Date: Jul 2005
Location: Ohio and Florida
Posts: 267
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Thanks for the input and I will give you a update of how it goes. What would two cherry bombs do just for fun? not as a finite solution?
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76 911/2.7/SSI/2in 1out/tensioners/Ice Green Targa 01 Suburban 02 Jeep Liberty WillsWings Eagle "As I hug the mountain tops in my hang glider, the only distraction Is looking below at the roads I will hug with my 911 " |
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Back in the saddle again
Join Date: Oct 2001
Location: Central TX west of Houston
Posts: 55,956
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Just make sure that if you bolt something like a cherry bomb or something to the end of the SSI's that you fabricate some sort of hanger ala the hanger used with megaphones to support that weight or you could end up with cracks in the SSI's.
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Steve '08 Boxster RS60 Spyder #0099/1960 - never named a car before, but this is Charlotte. '88 targa ![]() |
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Virginia Rocks!
Join Date: Oct 2003
Location: Just outside the beltway
Posts: 8,497
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Just take the muffler off and shake it. If it doesn't rattle, the problem is in the car.
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Rosewood 1983 911 SC Targa | Black 1990 944 S2 | White 1980 BMW R65 | Past: Crystal 1986 944 na Guards Red is for the Unoriginal
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Registered
Join Date: Jul 2005
Location: Ohio and Florida
Posts: 267
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Quote:
My Bursch is not strapped but does not weight much could be issue ?
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76 911/2.7/SSI/2in 1out/tensioners/Ice Green Targa 01 Suburban 02 Jeep Liberty WillsWings Eagle "As I hug the mountain tops in my hang glider, the only distraction Is looking below at the roads I will hug with my 911 " |
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