> > Jerry Hey wrote:

 >  >
 >  > Please look at this proposed muffler installation.  The muffler sets
 >  > to the side of the wedge oil pan but mostly it is below the oil pan.
 >  > The clearance to the oil pan is about 1.250 inches.  The radiator
 >  > sets to the right side and below.  Rad to muffler clearance is about
 >  > 5 inches.  The intake plenum, above the radiator is opposite the
 >  > muffler.  There is room to shield the pan, plenum and radiator.
 >  >
 >  > The 3 inch square muffler would be made of .065 304 Stainless.    I
 >  > think I will just buy some 3" wide strips and weld it up.   Also, am
 >  > considering making the tail part removable so that different options
 >  > can be tried should noise be a problem.
 >  >
 >  > The primaries  would be 2 inch round and approximately 22 inches long.
 >  >
 >  > I would appreciate critical comments from anyone.   Thanks ,   Jerry

     In side view that mount looks close to the ideal layout. A great
 advertisement for
     the plate mount also. What will the muffler look like inside? I am using

 > a Borla
 >     stainless steel pack with a 4" ID. it is getting us under 100 DB at 50
 > feet with the
 >     meter on the drivers side and the outlet on the passenger
side. The meter
 > is 50'
 >     from the track and located where the car will be at low speed
and at full
 > throttle.
 >
 >     Lynn E. Hanover

Thanks Lynn,  Paul's Tailwind Motor Mount design is about as good as
it can get in my opinion.  The same layout works for RV's too.  I
principle that I am hoping will work in my muffler is that the
exhaust note will be softened by  turbulence.  The exhaust pipes
enter the four inch sq pipe perpendicular to the long axis.  The
exhaust gas, I hope, will  bounce off the far wall of the muffler and
not get that reorganized as it flows out of the system.   The muffler
will be in two pieces that bolt together  at the 45º turn down.  If
version number one is too noisy, then I can make different end
pieces.   I think a home made version of Spin Tech could be a bolt on
option.  Issues such as clearing heat from inside the cowl, not
having the muffler in the air stream, keeping the exhaust system away
from the radiator and oil pan are all at play in this design.  Lack
of space forces compromises throughout.   Jerry

I think your muffler might work real well. We have never tried a square
can. That might break up the sound waves with all sorts of bouncing
around in there.

BTW does this look about right? I'll add the muffler and rad soon.
What size rad are you going to use? Where would you like the inlet
and out let?
	
Paul Lamar
 
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