if I cut out my 2nd set of cats...

[whitey]

Could I use 2 1/4 exaust tubing with exaust strap clamps to replace it? does the tubing need to be bent or is it a straight shot?

[ctrlraven]

The tubing will need to be bent. I'll see if I can find a pic of mine and post it up.

[whitey]

Ok cool, thanks

[Rockettman]

If I remember correctly; I don't think you can just cut them out, and throw in a piece of pipe. The "in" on the cat is a different size than the "out". The bottom pic may reveal this.
You can see in mine, that it's 2 1/4" all the way through. It's definately not that diameter stock.

Maybe these will help alittle:

http://www.mercurymarauder.net/gallery/data/500/medium/06-10-10_1732.jpg

http://www.mercurymarauder.net/gallery/data/500/medium/06-10-10_1729.jpg

http://www.mercurymarauder.net/gallery/data/500/medium/mdmp_0904_10_z_marauder_exhaus t_install_original_pipes.jpg

[Vortech347]

My deletes were a straight shot. No bending necessary.

[ctrlraven]

Mine needed a bend because the tech cut directly in front of the cat and then directly in front of the factory flange to the mid-pipe.

[whitey]

ok, so i just went out to my car and measured the OD of the exhaust from right before the 2nd cat, to the weld right after the cat, its a straight shot. here's what i came up with

IN=7 1/2" circumference= 7.5"= 2.387" diameter= which is roughly 2 3/8"
OUT=6 5/8" circumference= 6.625"= 2.108" diameter= which is roughly 2 1/8"

makes sense because many say its not a true 2 1/4" exhaust, which is true.
however between the 2 measurements, there is a 1/4" difference, which leads me to think if i bought a piece of 2 1/4" OD exhaust pipe, i could use 2 1/4" butt to butt sleeves.

would the 2 1/4" sleeves have a little bit of play in them...like an 1/8" so i could have a decent seal between the two differently sized pipes, 2 1/4" to 2 3/8" and 2 1/4" to 2 1/8"? thanks guys.......btw, went to another mechanic down the street and he quoted me $150, same as the first....i think ~$50 in parts and do-it-youself outlook sounds better, im a cheapass when im laid off

[DWSTANG67]

cut both cats out and get sw headers and high flow cats


http://i1104.photobucket.com/albums/h322/DWSTANG67/IMG_0249.jpg


http://i1104.photobucket.com/albums/h322/DWSTANG67/IMG_0247.jpg

[whitey]

cut both cats out and get sw headers and high flow cats
]

as soon as you donate them, I will

[DWSTANG67]

:lol:

I donate the money to myself for the headers not much left to donate to others sorry

[whitey]

Im so broke right now, I cant even pay attention....just looking for other ways to get around paying $150 once I get back to work...id rather buy a welder and teach myself than pay that price

[MMcactusflower]

I was just talking with the owner of our local hot rod exhaust shop in Austin...a gearhead himself who has been in the biz some 30 years...about taking the second set of cats of my '04 DRT...he asked me if that would cause the CEL (check engine light) to come on...and I told him I did not think so since there were no sensors in them...am I correct in saying that..and should I go ahead and have it done?
I also am in for a set of the 4" res delete megs tips if we have enough orders to generate another run...the two things are all I can afford to do now.
Hope to go the SW exhaust system another time.

[whitey]

Check engine light will not come on because the 2nd o2 sensor is between the 2 cats...not after the 2nd cat.

[92BlackGT]

correct, no CEL. i got mine cut out and am enjoying the sound

[MMcactusflower]

I will get that done very soon...thanks once again.

[HiHoSilver]

My winter project! Hopefully

[RacerX]

When I did mine a few years ago, I just used an electricians flexible drill bit with a 1" auger on it. That tore all the ceramic right apart then I used a metal coat hanger to get the wire screen that surrounds the ceramic out. No cutting, no welding, no 2nd cats! :beer:

[Marauderjack]

When I did mine a few years ago, I just used an electricians flexible drill bit with a 1" auger on it. That tore all the ceramic right apart then I used a metal coat hanger to get the wire screen that surrounds the ceramic out. No cutting, no welding, no 2nd cats! :beer:

I did that on a '90 Mustang 5.0 I had and the empty cats rang like a friggin' BELL when I accelerated.......NOT GOOD!!:shake: :argue:

What is the point of takin' the cats off......no power gain so is it just more noise??:confused:

[RacerX]

I did that on a '90 Mustang 5.0 I had and the empty cats rang like a friggin' BELL when I accelerated.......NOT GOOD!!:shake: :argue:

What is the point of takin' the cats off......no power gain so is it just more noise??:confused:
Yes on the noise. It gives it a deeper and louder sound. No bell ringing btw. I've upgaded my exhaust since though. ;)

[whitey]

it seems that nobody knows for sure about it adding hp, but ctrlraven claims it took a tenth off his 1/4mile time....understanding that it could be many factors that did this, not just the cats removed, such as temp/octane/tires/etc. however, one thing is for certain, if its not serving a purpose being on there(purposeful for me, not so much the emissions), why have them? ive read up that hollowing out the cats could be detrimental, due to having a void/pocket that the exhaust gasses have no forced direction to go anymore forming kind of like turbulance in the exhaust gasses escaping. my guess is that ford put on the second set of cats to keep the EPA happy with its exhaust gasses output, considering if they really aren't needed, they wouldn't have spent the money to do so.

now that i have been:hijack:, does anybody know if the exaust sleeve clamps have enough play in them to seal up a 1/8" difference in pipe sizes?

[Marauderjack]

YES!!!!:beer:

[whitey]

YES!!!!:beer:
is that a yes to my question?

[RacerX]

ive read up that hollowing out the cats could be detrimental, due to having a void/pocket that the exhaust gasses have no forced direction to go anymore forming kind of like turbulance in the exhaust gasses escaping.
Let's say you're idling @ 800 rpms. Divide that by half to get exhaust stroke rpm (crank rotates twice for full stroke). 400 x 8 (cylinders) gives you 3,200 exhaust pulses/minute, divide by 60 to get 53.3 pulses/sec, divide by two (two banks) and you get 26.6 pulses/sec going through each exhaust pipe. I wouldn't worry about turbulence, etc. At wot... hehehe!

[whitey]

Yes, 26.6....but the turbulance is making it more difficult for each stroke to get out, without getting hammered from the last stroke bouncing back since once it enters the hollowed cat, it has no more guidance. Think of it like this... Put a straw in your mouth and blow through it, then stick the straw in the side of a box, with another straw sticking out the opposite side. When you blow threw the straw now, that same breath will not come out the other end because it will fill the box, although air will blow out, it will become trapped first......now stop blowing the straw :)

[RacerX]

You're splitting hairs about 1/2 a pony @ idle. :beer:

[Curless]

I would not "gut" the cats....they are worth $$$ people! Cut them out and sell them to a scrap guy. You should be able to get $100 or so for them.

[whitey]

Racerx....you are correct, lol.
Curless...i hear thay in md now, you need a permit because so many were being stolen

[Curless]

Racerx....you are correct, lol.
Curless...i hear thay in md now, you need a permit because so many were being stolen

Could be...

[Marauderjack]

is that a yes to my question?

YES!!;)

Just messin' whitcha..........the clamps will take the gap up well and to ensure a good seal I use Hi-Temp RTV Silicone with excellent results!!:beer: I also use the silicone instead of a gasket on my Cobra at the collector flange where the side pipes attach......works great and does not burn out!!:bows:

Good Luck!!:D

[babbage]

whitey, just take it in to an exhaust shop, tell them they get your cats for free if they weld in a pipe for you.

2 cats are worth $100. Then you get a free upgrade. Done.

[ctrlraven]

whitey, just take it in to an exhaust shop, tell them they get your cats for free if they weld in a pipe for you.

2 cats are worth $100. Then you get a free upgrade. Done.
That or... Cut the 2nd set out yourself then take it to a shop and have them weld in a piece of pipe.

[whitey]

whitey, just take it in to an exhaust shop, tell them they get your cats for free if they weld in a pipe for you.

2 cats are worth $100. Then you get a free upgrade. Done.
finding the shop to do it is the issue, here in md they have really cracked down on scraping the cats, if a shop is caught cutting out cats, they are shut down, hefty fines($10,000) and jail time to the person who did it. if i cut them out myself, i could give them my cats once they weld it in....just gotta find that guy to do it

[ctrlraven]

finding the shop to do it is the issue, here in md they have really cracked down on scraping the cats, if a shop is caught cutting out cats, they are shut down, hefty fines($10,000) and jail time to the person who did it. if i cut them out myself, i could give them my cats once they weld it in....just gotta find that guy to do it
When I cut mine out, my friend attempted to weld in a new piece of pipe but his welding was acting up the whole time so I ended up taking to Tony's Custom Exhaust in Glen Burnie and had them finish up the welding. No questions were asked because it came into them without cats so they were fine with that.

When I had Greg "malibuguy" at MBS do my exhaust he knew the car came with 4 cats from factory but since I brought it to him with only two cats that's what he let leave with. If a vehicle comes in with X amount of cats it must leave with the same amount of cats that were on it when it came in. Whether they are stock or aftermarket ones which basically covers their arse. This is what Greg told me since I had my factory front cats removed and then replaced with two Magnaflow high-flow cats.

[whitey]

Who wants to buy my cats? Thats the hard part. Trying to get an even exchange is even harder.

[tbone]

SW Headers + Cats $1390
SW exhaust system $1090
Installation $600

Results: Priceless

[whitey]

SW Headers + Cats $1390
SW exhaust system $1090
Installation $600

Results: Priceless
Ground rent$494
Mortgage$443
Gas and elecric$150
Car payments, loans,food, toilet paper, etc$850


Unemployment$357 a week

Headers and exhaust for my car $NOT HAPPENING;-)

[RacerX]

Who wants to buy my cats? Thats the hard part. Trying to get an even exchange is even harder.
Not so funnny meow, is it?

[whitey]

Not so funnny meow, is it?
Lol. Cheesy, love it.

[Vortech347]

Ground rent$494
Mortgage$443
Gas and elecric$150
Car payments, loans,food, toilet paper, etc$850


Unemployment$357 a week

Headers and exhaust for my car $NOT HAPPENING;-)

(Dick moment) If your unemployed screwing with your car is the last thing you should be doing.

[RacerX]

(Dick moment) If your unemployed screwing with your car is the last thing you should be doing.

You got a prob with 47%ers??? :lol: IBTL!!!

[whitey]

Thats why im screwing with it....its the last thing I can do. :) but seriously, im bored out of my mind, I need something to entertain my brain, the other thing I could play with has blisters from playing too much......:p

[JOEMERC]

Yeah trying to find a shop to remove cats is not easy,i even asked if i cut off rear cats and drove to shop would they weld up replacement pipes and they said no.

[71cyclone]

Yeah trying to find a shop to remove cats is not easy,i even asked if i cut off rear cats and drove to shop would they weld up replacement pipes and they said no.

Kelly Mufflers and Acc. Shop ,Bladensburg M.D. / No questions asked [I think Dooms "BURN OUT from some time ago is still there ]:burnout: They did mine a few a months ago..

[Vortech347]

Thats why im screwing with it....its the last thing I can do. :) but seriously, im bored out of my mind, I need something to entertain my brain, the other thing I could play with has blisters from playing too much......:p

Get a job.

[whitey]

Get a job.
please allow me to explain myself before you make another ignorent comment on my situation

unemployment pays me $430 a week w/o taxes

gas to fill up belindas gas tank ~$65

$430+$65=$495

$495/40hours= $12.38 an hour

it would take atleast $12.38 per hour in a standard 40 hour work week for me to break even

there are no jobs right now in my trade as union sprinkler fitters to make my $30.48 im used to.

there are no jobs around here that will hire me at $15.00 an hour starting out pay.

im not working for anything less, because it would not even be worth my time....to wake up, go to work, come home and bring a check home for an extra $10-30 than what unemployment already pays me to sit home, on my butt, cherish the time i spend with my kid, do the honey-doo list, and whatever else i want on my free time. :puke:

[justbob]

God I'm glad I do my own work...

Whitey, I have never seen so many questions on exhaust in my life! 😜 Aren't you a fitter? It's just pipe man, fab that **** up! I'm only a Plumber and I have my welding certs!


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[whitey]

God I'm glad I do my own work...

Whitey, I have never seen so many questions on exhaust in my life! �� Aren't you a fitter? It's just pipe man, fab that **** up! I'm only a Plumber and I have my welding certs!


Sent from my iPhone using Tapatalk

lol, im just a sprinkler fitter.....its all screw pipe, i pull pipe wrenches, never welded/soldered/brazed in my life, or else it would be done by now.

[justbob]

please allow me to explain myself before you make another ignorent comment on my situation

unemployment pays me $430 a week w/o taxes

gas to fill up belindas gas tank ~$65

$430+$65=$495

$495/40hours= $12.38 an hour

it would take atleast $12.38 per hour in a standard 40 hour work week for me to break even

there are no jobs right now in my trade as union sprinkler fitters to make my $30.48 im used to.

there are no jobs around here that will hire me at $15.00 an hour starting out pay.

im not working for anything less, because it would not even be worth my time....to wake up, go to work, come home and bring a check home for an extra $10-30 than what unemployment already pays me to sit home, on my butt, cherish the time i spend with my kid, do the honey-doo list, and whatever else i want on my free time. :puke:

You are allowed to make half that unemployment check per week at zero penalties, then it's a buck off for every buck made. At least it was that way a year ago?

Hey man, extra income is only a plus. I was where you are at a couple years ago and will never forget.


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[whitey]

im unaware of the half check thing, is that a md unemployment statement? i would assume that different states work differently

[justbob]

im unaware of the half check thing, is that a md unemployment statement? i would assume that different states work differently

As far as I know it is Federal? I could be wrong and it may just be Illinois. Check into it, its certainly better to have a legit extra and get out of the house.


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[whitey]

I will look into it...i hope your right