EXHAUST SYSTEM

     Project COBRA'33 will be privileged to have an all Stainless Steel Exhaust System form the Headers back.  We will be using several different brands including, BBK-BORLA-S&W-QTP and Jeg's.  Our system will be run in 2-1/2" tubing and exit the rear of the car with one Exhaust tip on each side of the car, hopefully just about where the bumper bolts to the bumper brackets.

HEADERS

FULL LENGTH

SHORTY

     The Headers we choose for Project COBRA'33 were BBK full length Headers for the 4.6L Ford DOHC 4V engine, 1999 and newer.  These were purchased from Summit Racing, www.summitracing.com .  I am hopeful that I will be able to fit the full length headers in and around the very tight con finds of the '33 frame.  The problem is the frame really narrows from the cowl forward, making for a very tight fit.  It we are unable to make the full length headers work, then we will go to Shorty Headers.  Regardless of which Header we end up using, they will both we manufactured by BBK, and both have there Polished Ceramic coating.

REDUCERS

     The Reducers are simply the transition pieces from the headers to the Dumps, or rest of the Exhaust System.  The headers have all four Primary tubes come together in what is called the collector.  These collectors have to be pretty big, to allow 4-1-5/8" tubes to come together and merge.  So it's the Reducers job to take that large opening at the end of the headers called the Collectors,  and Reduce it down to the Exhaust System's nominal tube size, in our case that happens to be 2-1/2".  Our headers like most have a 3-bolt flange that is used to attach to the collectors, the Reducers have that same 3-bolt flange on one end and cone down to the 2-1/2" size we need on the other.

     For the record, I consider the Exhaust System to be everything behind the headers.  As discussed elsewhere, we considered the headers to be a part of the engine, only because they bolted directly to the engine block and other sub-systems mounted to the headers which were part of the engine.

EXHAUST DUMPS

     This Exhaust System will use Dynomax (Part Number 88340) Stainless Steel 2-1/2" Dumps which were purchased at Summit Racing(www.summitracing.com)  These are simply a set of pipes that mount to the Exhaust System and have provisions that allow you to quickly and simply open up the exhaust system by removing a 3-bolt collector plate.  The Dumps are installed somewhere close to the end of the headers and before the mufflers.  Usually people that race will have these, and the Dumps allow them to open there exhaust, by removing a plate that allows the exhaust to exit the Exhaust System, there by letting the engine run without the aid of mufflers.  in our case, we are going to mount our Electric Cut-outs to the 3-bolt flange on the Dumps, this will allow us to at anytime, from the drivers seat, open the Exhaust System up to our liking.

Exhaust Crossover

     We have included a Magnaflow Stainless Steel Crossover for our Exhaust System.  This is a set of pipes that come together and form a x, the center piece of each pipe is opened up so that the Exhaust gases can pass from one pipe to the other.  Usually this allows an engine to balance itself from one cylinder bank to the other, smoothing out the exhaust note, and producing more power.

 Electric Cut-Outs

     Project COBRA'33 will take every advantage it can muster, and it includes installing QTP Quick Time Performance Electric Cutouts.  They are 2-1/2" in diameter, just like the rest of the Exhaust System and are constructed out of aluminum and Stainless Steel parts.  These Electric Cutouts allow us to open up the Exhaust System anywhere from just a crack to full bore wide open, all from the convenience of the drivers seat.

 EXHAUST SYSTEM

     Project COBRA'33 will use Borla's  stainless steel Hot Rod Exhaust System.  This kit consist of 4-45° bends, 4-90° bends, 4-180° bend and 4-straight pieces of 2-1/2" stainless tubing.  There are also 2-3-1/2" tips and 2-XL series mufflers along with an assortment of mounting and clamping hardware.  We purchased this Exhaust System from our good friends at Jeg's.

Mufflers

BAND CLAMPS AND MOUNTING BRACKETS

     We chose S&W's stainless steel mounting brackets, because they not only look nice but give you several options for mounting the Exhaust System.  We also decided to only use stainless steel band clamps.  If you have not used them before, trust me they are worth the extra money, they are about 5" wide and made of small gauge sheet stainless that wraps around the Exhaust tubing and bolts together with 2-3/8" bolts.  The nice thing about them is they do not crush the tubing like a normal muffler clamp would.  This makes future removal a snap, since the tubing will slide out of it's socket with easy.  I do recommend applying some anti-seize to both pieces before installing, just as an insurance against sticking.  The big advantage, especially on street rods is the ability to easily remove the exhaust pieces, since the area between the frame rails is very congested, it's quite possible that you may need to remove several item to get at an area, or part.  This will aid you during that time.  They also seal the Exhaust System very well and are very easy to install, making them the perfect choice for our project.  Both the Brackets and the Band Clamps came from Jeg's.