Corkscrew exhaust?

I'm helping a friend with his bastard of a creation and he's determined that he wants the exhaust to exit just in front of the passenger door like one of the fancy schmancy designer series racy type SL Mercedes.

If you don't want a muffler that's easy, but if you want a muffler there's just not enough room. So I had this crazy idea, what if you had a corkscrew exhaust?

Is there a certain radius or x% larger exhaust diameter that you could use that would give you pretty darn near the exhaust flow of a straight pipe?

If so, I think I might be able to fit a muffler too.

mufflers are for Bob Costases. You want a "boomhole" like Gutty.

You either run a small loud muffler(like a Thrush style Glasspack), large quiet muffler, or lose power. No free lunch.

I used to have a muffler that was called an Auger muffler. It was pretty loud, but it did do some muffling.

The correct answer is to use a turbo as a muffler.

Be a man. Straight pipes.

http://www.summitracing.com/parts/wlk-17676/overview/

I'm in the electric cutout camp. If your trying to save weight and power you just need a set of earplugs. (I've driven 3 vehicles that had earplugs as standard operating equipment)

It sounds like what he really wants is a scavenging exhaust. You get into a thousand different theories on that and I don't think corkscrew is one of them....

In reply to novaderrik:

That was my first thought as well if it could be squeezed in... similar in function to the exhaust routing on the old T/A Challenger and AAR Cuda.

Another thought - is there room for a T'd resonator pipe? You'd need to make it modular so you could play with the pipe length to tune the sound, but it might be able to make the tone tolerable.

I also agree - turbo + hi-flow cat = muffler is not always required.

Tell him he is an idiot, and the exhaust will drive him nuts,and he will never drive the car because of it. Loud, stupid exhaust is just fine, until you drive the car.

Streetwiseguy wrote: Tell him he is an idiot, and the exhaust will drive him nuts,and he will never drive the car because of it. Loud, stupid exhaust is just fine, until you drive the car.

Shun the non-believer, shun, shun

a straight through glasspack looking resonator or muffler should do the trick. Either way, I'm a firm believer of deafening(or in some cases, setting on fire) Harley riders.....so I prefer straight pipes.

aircooled wrote: I used to have a muffler that was called an Auger muffler. It was pretty loud, but it did do some muffling.

I run a pair of Moroso Spiral Flow mufflers on my RX7 and they take it from being unbearable even with ear plugs to bearable with a helmet on.

They're about 16" long and 4" diameter

I don't need a muffler, there are several options, I'm trying to figure out the routing. So back to the pipes.

Is there a certain radius or x% larger exhaust diameter that you could use that would give you pretty darn near the exhaust flow of a straight pipe?

Streetwiseguy wrote: Tell him he is an idiot, and the exhaust will drive him nuts,and he will never drive the car because of it. Loud, stupid exhaust is just fine, until you drive the car.

No one has any idea or information?

Are you referring to an auger insert muffler? I used to use these when I raced dirt stock cars. Many tracks had decibel rules, if you were too loud you couldn't race, and we'd use these to knock off a few decibels.

http://www.speedwaymotors.com/Speedway-Auger-Style-Muffler,1736.html

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As I have often found, Speedway's circle track catalog can cheaply solve many problems.

You might also consider one of these options

http://www.speedwaymotors.com/Schoenfeld-Headers-IMCA609-IMCA-Spec-Muffler,3486.html

http://www.speedwaymotors.com/Muffler-Collector-Insert-3-Inch,4870.html

http://www.speedwaymotors.com/Schoenfeld-Headers-IMCA935-Muffler-3-1-2-Inch-OD-10-Inch-Long,66299.html

http://www.speedwaymotors.com/Dynatech%C2%AE-772-32510-Vortex-Insert-Cone-3-1-2-Inch,48903.html

No, once again I'm not talking the muffler I'm talking the exhaust pipe itself being corkscrew shaped. I'm trying to get the exhaust out of the muffler and then into the exit place he wants and not be overly restrictive.

Oh, you mean like an Arby's curly fry?

1. Every curve is going to reduce exhaust flow

2 The larger the diameter of the bend the less of the reduction.

*2 Won't trump rule one

That said having a larger diameter than the motor needs for the everything except the tail pipe will cut down losses and sound. How much and if it practical is something you will have to decide for your self.

Another suggestion if all else fails ear plugs, fit better cost less and weigh less than mufflers

I was kinda hoping that there was a formula or rule of thumb that would make the curly fry exhaust be almost as efficient as a straight exhaust.

This needs some batter and ketchup

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Having the exhaust exit straight out the engine bay, and also wanting it to not be stupid loud, are some pretty incompatible goals. What kind of car are we talking here? If you were willing to spend enough on circuitous pipe bending, i think a lot of cars actually have room for mufflers INSIDE the engine bay.