Topic: Is it just me?!

[Liljeepz]

I can't find any 2.4L cat back systems at Quadratec! :shock:
Is there a difference from 4.0 and 2.4L as far as the cat back goes?

[YJmechanic]

2.4 is different in every way because it is totally changed from the 4.0 where as the 2.5 and 4.0 are about the same just shorter.  still i can't believe a cat back shoud be any different.

[lanulos89]

yea 2.5's and 4.0's and 4.2's are all the same.

[Jeffy]

I mentioned this on another thread.  I don't believe any aftermarket cat is ODB-II Compliant.  It doesn't mean they haven't been used though.

[Liljeepz]

I mentioned this on another thread.  I don't believe any aftermarket cat is ODB-II Compliant.  It doesn't mean they haven't been used though.

That makes sense, but I just need the muffler and tail pipe. I can't even find those for a 2.4L are they the same as a 4.0?

[Jeffy]

I mentioned this on another thread.  I don't believe any aftermarket cat is ODB-II Compliant.  It doesn't mean they haven't been used though.

That makes sense, but I just need the muffler and tail pipe. I can't even find those for a 2.4L are they the same as a 4.0?

OH, my mistake! :Flush:

I'm not certain.  Take some pictures and compare them?  I suspect that everything behind the cat is the same though.  Only the engine was changed and that would effect the exhaust manifold, downpipe and perhaps the connection at the cat.

[Liljeepz]

Every time I work on the 2.4L I dislike it more and more. :x
every thing looks about the same, mine bolts onto the cat, the aftermarket ones look like they weld on, the mounts look a little different too. I have a club meeting tomorrow night ill just look at there jeeps and see if the mounts are close.

[YJmechanic]

just go to a muffler shop with whatever muffler you want and have them bend pipes to match it.  i used to do it for people all the time when i worked at monro.

[iismet]

just go to a muffler shop with whatever muffler you want and have them bend pipes to match it.  i used to do it for people all the time when i worked at monro.

This is what I did on my 2.4L. After installing a 33 skid I had the exhaust rebuilt from the manifold back. Had a high flow cat and muffler installed between the frame rails. They drilled a hole in the cat and welded in a bung for the 02 sensor. It improved mid range and the engine winds easier. Consistently get 16.9 city driving with 4.56 gears and 32x11.50 tires.

[Tall Boy]

just go to a muffler shop with whatever muffler you want and have them bend pipes to match it.  i used to do it for people all the time when i worked at monro.

This is what I did on my 2.4L. After installing a 33 skid I had the exhaust rebuilt from the manifold back. Had a high flow cat and muffler installed between the frame rails. They drilled a hole in the cat and welded in a bung for the 02 sensor. It improved mid range and the engine winds easier. Consistently get 16.9 city driving with 4.56 gears and 32x11.50 tires.

 Nice

 I just went to the muffler shop and had the guy put on a Flowmaster. He said the stock 2 1/4 tail pipe is fine and that any thing bigger would rob the backpressure needed for combustion. I think the theory is a certain amount of backpressure is needed for lower end torque. Take too much away and it will be more of a high end machine. That's what I have heard.

[chardrc]

thats what Ive heard also.. and that is why you see ricers with coffee cans for exhaust tips n such.. even throw they still have 1 inch pipe behing that so it doesn't do anything..

[Tall Boy]

Whats the deal with the coffee can exhaust ? They got that big thing that makes noise and they are fast cars.

[Tall Boy]

Really, I know nothing about them. I never have been inclined to converse with a ricer, except for saying "I'll race you, off road". Do they have 3" exhaust and high flow everything? I ain't shting you neither,honest question.

[SMC4WD]

This was taken from this link:
http://www.angelfire.com/nc2/mycoffeecan/page1.html

It's pretty funny

You are not going to believe this. Using some common rice boy knowledge, I added 50 hp to this car. All I did is use some common ordinary products and ordinary hand tools. Many are in disblief, but its proven. I dynoed this car with a Ghetto-TECH PRO meter before and after and recorded gains of 50.3 hp and 73.2 ft/lbs or torque. Read on for step by step assembly instructions

Step 1
Obtain a large coffee can, bigger the better, and cut a hole in the bottom. make the hole larger than your exhaust pipe, so the flange used to attach it will fit.


Step 2
This step is optional, but it adds extra hp, and is free, so why would you skip it. Find a big, permant marker, and write "TypeR"on the side. Don't worry if you mess up, it can be easily erased with a cloth soaked with gasoline. I originaly had a black "R", then a friend pointed out that by making the "R" red, like the rice boys do, you gain a couple more hp. This seems to work for the honda boys, as they claim that simply adding a "TypeR" badge to your 18 second accord suddenly gives it the ability to beat a Mustang GT or Cobra.


Step 3
This is by far the most difficult part. Here, you must cut off part of a smaller coffee can, then roll it up and insert it into the hole in the larger can. Now you must attach the two somehow. I chose to solder it, as that was the only method other than welding that I could come up with.


Step 4
Now its time for the grabber paint. I chose to paint the inside of the can bright blue. However, when I was ready for the paint, my friend didn't have it yet, so I sprayed a white base coat, then followed up with the blue. This should make it brighter as well.




Step 5
Finally, attach the coffee can, now an official high performance tip, to the existing exhaust system. The vehicle recieving this particular tip, just had a boring, normal size tip put on a few weeks earlier, so I was able to simply remove this tip to make mounting the can to the exhaust system easier. I would highly recomend purchasing one of these boring tips as it makes the process much easier. I have to add I have been getting some interesting e-mail asking me what model Honda I was going to put this on. Well after careful consultation with production staff and technical crews we decided the largest HP gain would be on a red '92 Jeep Cherokee, limited, and a gold package, owned by a certain Ryan Davis.




Here are the pictures you have all been waiting for...the Jeep Type "R"

[Jeffy]

Really, I know nothing about them. I never have been inclined to converse with a ricer, except for saying "I'll race you, off road". Do they have 3" exhaust and high flow everything? I ain't shting you neither,honest question.

If it's a true tuner car it will probably have at least one turbo and a 3" exhaust.  Don't mistake a tuner car for a ricer though.  A ricer will have the stock 1.75"" exhaust and run a wide mouth exhaust or just bolt-on a tip.  The tips allow the gases to expand and then they reverberate in the can for that loud exhaust note.  They want that same sound without having to spend $$$$'s for a better car with a turbo.