Re: [Amc-list] scavenging in a stock exhaust system?

[Frank Swygert <farna@xxxxxxx>]

First off, Ken Ames is correct -- hotter = more volume/less dense, cooler = less volume/more dense. Bottom line is you can use less diameter pipe behind the muffler, and factories did it for years. 

Tom, stock head pipe on the little American is 1-7/8", stock tail pipe is either 1-1/4" or 1-1/2" -- I have a good stock ceramic coated tail pipe, the first 1/2" or so that went in the muffler rusted off with the muffler, the rest is sound as the day it was bought.

The generic turbo gave it a nice sound. Not loud by any means, and you can hear it running at highway speeds, but not too loud at all. You can listen to the engine, radio, and a passenger okay. Still more wind noise than anything else! 

A Cherry Bomb or a Smitty's glass pack would probably be okay, just put a resonator after it to kill the "bark". The 54 or so Nash Statesman with the LeMans option had a 2x1V head, glass pack, and resonator from the factory (196 L-head). 

-----------
Date: Fri, 31 Oct 2008 11:19:02 -0700
From: Tom Jennings <tomj@xxxxxxx>

Frank Swygert wrote:

> > I don't know about scavenging, but the little 196 OHV DOES like to
> > have it's airways opened up!
>   

Yeah that's pretty much as I figured! There's 1/75 or so there now (it's 
not the factory soda straw), I'll get a 2" Summit muffler and get the 
tubes bent up locally.

I'vehad good luck with the SUmmit muffler on the Hornet. Louder than 
stock, but nice sound. They're $38 (plus shipping) 2" in and out.

If anyone has a better suggestion I'm open to it. Free flowing slightly 
louder OK but Cherry BOmb would be fun for about 60 minutes...!


-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

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