My motor is a fairly mild roller cammed 302 w/headers. The new tech
glasspacks are supposedly much better than the old style, in terms of noise, I
guess, but I'm really curious about the chambered design.
I'm going to do some research and see if I can get any real data.
In a message dated 4/7/2013 12:58:01 P.M. Pacific Daylight Time,
CoolVT@aol.com writes:
I can tell you that in using cheap old glass paks with a stock engine and
the same mufflers with a hopped up 302....they are much, much louder with
the 302. I shouldn't think a stock engine would be that difficult to muffle.
Mark L
In a message dated 4/7/2013 3:37:15 P.M. Eastern Daylight Time,
tsmit@shaw.ca writes:
Mike,
Here's a picture of what I think are the Mitchell mufflers - these are
what was on my Tiger when I got it.
For the rest of you that won't get the picture:
The body is 24" long, 3x5" oval, 2" in and out. Contrary to what I
remembered, the hangers attach 5" rearward from the front of the muffler
body - there is only about 20 inches between where the hangers attach on
the chassis and the rear axle tube.
I do recall the front of these mufflers pretty much touching the
rearward part of the underbody X frame, just behind the little exhaust
pipe notch in the X. The sound of these mufflers was pretty aggressive,
but it went well with the rest of the system and engine.
I would also be concerned with the amount of sound suppression that's
possible in a small diameter muffler such as the chambered ones in the
link below. It may be that with proper choice of all the internal
volumes, they get noise cancellation at most of the frequencies of
interest, but it seems to me that the overall result would still be
pretty dependent on the rest of the package, i.e. engine displacement,
cam, and the diameter of the rest of the exhaust.
Theo
On 4/7/2013 10:28 AM, MWood24020@aol.com wrote:
> Thanks, Theo. I was looking around the 'net yesterday and saw this:
> http://www.classicchambered.com/
> Concern is that there would really be minimal muffling. Upside would be
> installation, particularly in terms of avoiding the "mufflers hanging
low"
> issue/look we have with our cars.
>
> I also had another friend tell me he installed the new tech, small
diameter
> glasspacks on his Tiger with very good results.
>
> I'm not a big fan of Flowmaster mufflers. I've yet to have an install
where
> there wasn't some droning, regardless as to whether running an H or X
> pipe. They do sound good under throttle and are made very well, though!
[demime 1.01d removed an attachment of type image/jpeg which had a name of
IMG_1333.JPG]
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