Exhaust config for a 93 sc help

EatonEmployee

Registered User
I bought one magnaflow 54306 for my SC as a recommendation from a sponsored SCCoA performance shop. It is long and cylindrical. Does my car have two cats? Are the cats right after the headers and the other 4 things mufflers? Are they all necessary? Will this cat work and preform the correct light-all reaction?

Of my car needs only one cat I was going to go to a muffler shop and try to see what could be done based upon the experts like Dave on here. Remove the stock cats, put just the one larger capacity on or use two? Get rid of the two extra fwd in-line mufflers and buy the flowmaster cat-back system.

So one or two cats and where??

Can I remove the first set of mufflers closest to the motor and which are they?

How should the exhaust go. Anyone got any pics? My email is lincomac@gmail.com or f-16expert1@hotmail.com. I check the gmail more often. I promise to pass on any knowledge I get to any new SC owners as I gain it. I also have almost an entire garage full of 93 cobra parts from my foxbody / 93 cobra phase. I am now 37 and Iraq and 13 years of the USAF has taken it's tole on this once young man. Take care and thorough info is greatly appreciated. I have been hit by a few blasts during my tour and even before.

respectfully, Linc
 
Exhaust note

My car's exhaust is totally stock and somewhat confusing. I know it can't ALL be necessary and was told it was hindered because it was making the 93 mustang look so bad otherwise. Well a supercharged 3.8 should make a 225hp car look bad. lol That is why they are super! I look forward to your collective input.

Respectfully,


Linc
 
"37year old" "once young man" - You whippersnapper! :p Some of us are in our second half-century now.

To recap - stock exhaust on Gen1s were three cats to a resonator to two mufflers.

That one 2-in 1-out is a third catalytic converter. Behind it is a resonator, running back to the Y pipes.

Supercharged - if you can find someone to do the front pipes, and the cats for you, MandrelExhaustSystems.COM has the rear section for true duals ( http://www.mandrelexhaustsystems.com/servlet/the-116/92-dsh-97-THUNDERBIRD-EXHAUST-TUBING/Detail ). 2 in 2 out X muffler and manifold / header through cats not included, alas.

RwP
 
"37year old" "once young man" - You whippersnapper! :p Some of us are in our second half-century now.

To recap - stock exhaust on Gen1s were three cats to a resonator to two mufflers.

That one 2-in 1-out is a third catalytic converter. Behind it is a resonator, running back to the Y pipes.

Supercharged - if you can find someone to do the front pipes, and the cats for you, MandrelExhaustSystems.COM has the rear section for true duals ( http://www.mandrelexhaustsystems.com/servlet/the-116/92-dsh-97-THUNDERBIRD-EXHAUST-TUBING/Detail ). 2 in 2 out X muffler and manifold / header through cats not included, alas.

RwP

IF you are not in a HUGE hurry... WAIT!
I am sending off all my exhaust this week to get a business to build Mandrel bent front pipe sections!!
After he does mine, they will have the template to do them over and over for us SC guys!!!!

He will have a template for STOCK manifolds and for Kooks Midlength headers.
Will be able to do them in 2.25" or 2.5" with or without Cats, with or without X-Pipe style Resonator AND with or without ball socket joints on both sides of the resonator attaching to a 2.5" dual exhaust center pipe for both early and late model tanks.

Starting a new thread this week on this!
 
That's a hella deal, Regul8r!

Too bad I've got the 5.0L in my Cougar ... I'd love to find a deal like that!

RwP
 
"37year old" "once young man" - You whippersnapper! :p Some of us are in our second half-century now.

To recap - stock exhaust on Gen1s were three cats to a resonator to two mufflers.

That one 2-in 1-out is a third catalytic converter. Behind it is a resonator, running back to the Y pipes.

Supercharged - if you can find someone to do the front pipes, and the cats for you, MandrelExhaustSystems.COM has the rear section for true duals ( http://www.mandrelexhaustsystems.com/servlet/the-116/92-dsh-97-THUNDERBIRD-EXHAUST-TUBING/Detail ). 2 in 2 out X muffler and manifold / header through cats not included, alas.

RwP

I bet to differ.

I've had a 90 and currently have a 92 and both of them only had 2 cats and they were fully stock when I got them. I don't know about the California emission models though. I know the "exhaust bible" list all SC as having three but it is wrong.

Also, I have the exhaust that you listed and it was a slight pain with the clearance around the diff, we had to do some slight clearancing to make it fit properly. If I had it to do over again I would have paid a little more and had the mandrel shop bend it up for me instead.
 
yes, same here, two cats.

one after each manifold. That is the restriction in the exhaust system. the almost 90 deg perfect bend after the one cat.

there is no cat in the resonator.

and mine is a 1992 model
 
yes, same here, two cats.

one after each manifold. That is the restriction in the exhaust system. the almost 90 deg perfect bend after the one cat.

there is no cat in the resonator.

and mine is a 1992 model


89-92 had the 2 cats with a big Resonator.
93 has 2 cats, AND a 3rd cat in place of a Y-pipe before it goes into a SMALL resonator.

I'll have pics of both this week too!
Well my 90 has the resonator deleted and replaced with a Y-pipe.
 
I bet to differ.

I've had a 90 and currently have a 92 and both of them only had 2 cats and they were fully stock when I got them. I don't know about the California emission models though. I know the "exhaust bible" list all SC as having three but it is wrong.

*shrug* So's the Ford Service Manual and the Ford Parts Manual (the latter being the online service at the local Ford dealership).

Won't argue, I was quoting from The Bible as it were. Real World can quite often be different ;)

So - you didn't have anything Y'ing to a resonator? Ford lists NO MN12s with factory true duals.

(They do show true duals for some FN10s, however ... but since this is a SuperCoupe club, that doesn't apply since the FN10 didn't get the 3.8SC, again from the parts list.)

RwP
 
please specify parts in order for the slow

So let me get this straight. After the headers those two things with the holed heat shroud are just resonators and can be removed? After that are two cats and the thing that takes the dual exhaust to one and back to two is also just a resonators not a cat? Then after the middle is the cats and at the end are the mufflers/resonators. So I can pull the two things after the header and the middle piece and go to an X then two of the magniflow cats and do the flowmaster cat back for my 93 with the stock tank?

I live in Oregon but any muffler shop can duplicate the pieces minus the restrictions. I hope? I got hurt in combat I registered my car and never have to do it again. I have permanent plates from being hurt in combat. Please forgive me if I repeat stuff. I have a mild TBI and my short term is not so great. Freedom isn't free ya know. My body is a good example.

Oh, I know I am a whipper snapper at 37 and I appreciate you wiser specialists. These 93's were popular during the best years of my life and to find one so young is not only beautiful but my generation.

I need to hook up with some local SC guys. I was a 93 cobra freak, sold it and have a garage filled with parts to almost build another one. I am never going back after driving this dream machine.

Linc
 
after header

I am convinced that the cats are right after headers. Please correct me. I am close to figuring this out as soon as I can find an X pipe.
 
Those are cats right after manifolds. Then you should either go into another cat then into a resonator or right into a resonator. The resonator looks like a muffler


I have in the past deleted the cats to the resonator only replacing it with one high flow cat. Didnt sound half bad and definitely freed up the exhaust. I kept the factory mufflers and pipes in that configuration. CHeapest way to go and bang for the buck IMO..If you change teh mufflers it may start geting a bit to raspy for you and you may want to add a resonator
 
Damon's post is true.

I think some of the 2-cat / 3-cat controversy may come from people who have auto cars thinking one thing and people with manual cars thinking another. The 90 auto I have has only 2 cats, with 1 big resonator, 2 inlets, 1 outlet. Manual cars of the early years may have a 3rd cat.
 
Not sure on 93 models but my 1992 has manual trans and only 2 cats, directly attached to the manifolds. then back to the resonator (there was no cat material in resonator).

so we know that 1992 had only 2 cats with manual trans.
 
My 90 was a manual from the factory, please refer to my previous post.

I believe you, but you didn't specify which transmission your car had. So it wasn't clear to me what you meant.

So, 90 manuals only had 2 cats.
 
It doesnt really matter what years had what here. He just needs to know what the cats are and what the resonator is. And there are limited choices that would be there regardless of year.
 
exhaust set up

I have a 93 with an AOD. Black with black leather. This SC has the cats right out of the manifold the, just two, then instead of an X or H it goes two into one with a resonator and two more before the dual tips with dual outs from the center resonator.

I have one big high flow cat from magnaflow up to 7.2L. I could run direct down tubes and put the cat where the center resonator is. I would need to get massive extensions for the O2 sensors. The cat part number was in the original post.

You guys are giving me ideas but the last thing I want is an engine light. I know they are always emissions related. My car only has 98k.
 
you keep o2 in factory locations. Dont overcomplicate this. and you wont get any check engine lights from removing the cats and resonator and addind the high flow
 
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