[FC] dual exhaust

[James Davis]

Ok since you have some experience and perspective under an FC here 
goes.  The cars mufflers are tucked along side the engine using valve 
cover/muffler heat shields and muffler tail pipes that exit to the 
side of the rear of the car  .  On the FC's, the mufflers are out at 
the edge of the rear valence and exit almost straight to the 
rear.  Thus, the car's right "U tube makes a 180 degree bend and the 
FC's need a 165 degree bend to fit the FC muffler hanger.  The cars 
right muffler hanger is 5 inches from the top bolt hole to the 
closest side of the 6x9 oval muffler.  A look at the latest 
Communique's Clark's add. shows the difference in exit angles.  On 
the right side the FC muffler hanger/support is 14 inches from the 
top bolt hole to the nearest corner of the six inch round 
muffler.  The car "U" can be bent out (if heated) to fit the right 
side.  The left side is worse.  My home made left hanger is 22 inches 
from the top hole to the muffler.  The left side "U" tube must be 
spaced out to get the correct angle to match the right.  Basically 
you saw the "U" tube in half and insert a 6 inch piece of straight 
pipe between the two "J" tubes.  Most six inch mufflers have a two 
inch id inlet tube so pipe adapters and various tube extensions are needed.
     Common mufflers used for FC's are for the Chrysler "K" car and 
the Ford Granada.  Any muffler shop will have many suitable mufflers 
in the six inch dia and 14 to 18 inches in length.  Unlike the car 
there is lots of room under an FC for a long muffler.
      If you are planning to put duals on an engine with the small 
exhaust manifolds, the larger 1.75 inch 140 "U" pipes won't fit 
properly.   Venders do sell the 1.5 inch "U" tubes for the 
80/98/102/95/110 engines.
Jim Davis



.At 10:06 AM 12/8/2005, you wrote:
>Jim;- I did anticipate this dual exhaust conversion early on, so i
>fabricated a "box" under the battery box to house the new muffler and
>copied the shape and dimensions of the space on the pass.side. (I had to
>replace that area too) The sides and floor of the original battery box
>were completely gone save a little of the "L" brackets that once held the
>battery tray. I guess I need to know what type of muffler will fit the U-
>pipes?? A second round unit like on the rt. side? the bottoms of the rear
>quarter panel and the rear valence panel are pretty much cancered away so
>it will be nothing to build in a notch for the exhaust pipe tip on the
>left side too. Why is theU- pipe angle wrong? does it need to bend up or
>down?
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