3.6 Conversion a little too loud - How about this option.

[Jcon]

I'm using the AWE headers and muffler shown on Timmins website for my 3.6 conversion. It's a great setup, but a little loud for me as somewhat of a daily driver. It also has some real drone to it. Going through the archives I found this link to Car chemistry inserts.

www.carchemistry.com/ccinserts.html

Couldn't these be inserted into the outlet pipes on the muffler? If you secured them with stainless screws its would be easily reverseable at the track.

A number of people have had real success reducing the size of the muffler outlets, wouldn't this have relatively the same effect.


Jeff C

[Jcon]

Bump for the West Coast

[rattlsnak]

I would have to find the link, but I posted a complete story on these on here and Rennlist a year or so ago. I used them in my Supercups on my 993. They were the perfect solution for me and now many others. You could certainly use them the way you want (which is the way I used them, the Supercups are just basically a 3 inch pipe), but the inserts are long, so make sure you have enough room in the outlet pipe.

[Jack Olsen]

They look like a good idea, providing you have enough tailpipe length to fit them.

As I've posted before, a .79 Campbell's soup can keeps my dual-out Flowmaster very civilized around town. I pop it off for the for-fun drives and track days.

Without can, and with can:

[Jcon]

Dumb question, but how is the can secured?

[Wayne 962]

Originally posted by Jcon
Dumb question, but how is the can secured?

Bazooka Joe!



-Wayne

[Jack Olsen]

Aluminum can. One slit halfway up the length of the can on each side. Stainless hose clamp.

Speaking of which, does anyone know of a source for this type of hose clamp? Since I have a fixed compressed size, this would save me needing a screwdriver in the glove compartment.

[Jcon]

I'm liking this insert idea. I've e-mailed the company with a couple of questions. I'll let you know how it goes.

Jeff C

[POVI]

Hi Jack,

Could you post a close up pic of your can on your exhaust tip , I think id like to give it a try as well .. also do you use 2 cans or just one on one side ?

Thanks in advance.

- Joe -

[Jack Olsen]

You need to make sure there's still a good path out for exhaust gasses, of course. You need to have a muffler (like a Flowmaster) with a single chamber inside that both inlets dump into. I wouldn't suggest capping both outlets at all. It could seriously compromise your motor's performance -- or, at worst, do a lot of damage (the banana in the tailpipe effect).

One cap is all you need to do to kill the resonance. It also dramatically reduces the overall volume.

I used an aluminum can that could only be opened with a can opener on one end. Campbell's corporation made the perfect inner-diameter model (and that meant a free bowl of soup for me, along with the rust-proof cap -- all for less than a buck).

I took a second can that could be opened on both ends, cleaned it out as a tube, and taped it to the end of my 'cap' can for painting. I shot high temp paint into the tube to create the faux black opening on the bottom of the can (like the tunnel entrances Roadrunner paints for Coyote in the Warner Bros. cartoons).

Here it is installed on the tailpipe.



Here's a side view that shows the slit in the aluminum that allows it to compress over the tailpipe.



Here's the can. You'll notice that I put a steel wool pad in there to reduce the possibility of any drum-head effect between the exhaust gasses and the bottom of the can.



Here's the tailpipe when it's open.



Project cost: Less than five bucks. Funny looks you get for having a soup can on your tailpipe: Priceless.