Wow, thanks Jon!
Just a curiosity question, but are there any pipes out there that I can just
clamp, or do I need them welded? If I need them welded, how long can I
drive before they need to get welded?
Thanks!
-- Chris Reck Bloomington, IL<jon@dakota-truck.net> wrote in message news:clmmtp$4c8$1@bent.twistedbits.net... > > "Chris Reck" <chris92@insightbb.com> wrote: > > : Hi, > > : I could use some help determining what I need for my truck. I've got > 87,000 > : miles so I was looking at getting a high-flow cat (since it's rattling) > and > : a Gibson 3" single out exhaust. > > : Does anyone know what diameter of pipes I need on the cat to work with > my > : wishes? Anyone know where to buy them? I found on TruckPerformance.com > : back in June a direct fit High Flow cat from Car Sound for $138. It's > now > : $200. > > : I've searched the archives for note of pipe diameters and cannot find > : anything. Any help will be greatly appreciated! > > > Prior to ordering, I would recommend scooting under the truck > just to measure the diameter rather than taking my word for it, > but I believe your stock exhaust pipes are 2.5". If you get a > Gibson 3" cat-back exhaust system, it will come with a 2.5" to 3" > adapter which is intended to attach behind the cat where the Gibson > system bolts up. > > You basically have three options here: > > 1 - Buy a 2.5" in, 2.5" out cat to replace the stock cat, > then bolt the Gibson up per their instructions. > > 2 - Buy a 3" in, 3" out cat, and use the Gibson adapter in FRONT > of the cat, so you will have 3" from the cat all the way out > the back. > > 3 - Buy a 2.5" in, 3" out cat, which accomplishes the same thing > as the 2nd option, it just eliminates the Gibson adapter. > (Note that I'm not actually sure if this option is realistic, > as I don't know if there is such a thing as a 2.5" in, 3" out > cat...) > > > If it were me, I would go with option 2. Note that with both > options 2 and 3, you will almost certainly need to buy a length of > 3" exhaust pipe to use to make up the difference between the cat > and the where the Gibson exhaust bolts up. (Because the Gibson > doesn't bolt directly to the back of the cat, there is a section > of 2.5" exhaust pipe there, and you will need to replace it with > a 3" section in order to locate the over-axle bends and the tailpipe > correctly.) > > > BTW, I used to run a Gibson 3" single system on my '96 318 > until it rusted out. It sounds very nice, and without a cat, > it sounds incredible. A high flow cat with the Gibson will > probably put you somewhere in the middle, sound-wise. Depending > on the legal restrictions in your area and/or the amount of > work/hassle you want to go through, you might want to think > about making the cat be able to bolt in and out via exhaust > flanges so that a straight pipe can be bolted in its place. > However, since you are already going with a high flow cat, > I'd probably be inclined to just put the thing together with > the high flow cat and leave it like that. (Or, if an emissions > inspection is not required in your area, just replace the cat > with a straight pipe, stick the Gibson behind it and call it > a day - use the money you saved for more mods.) ;-) > > I hope that helps! If something isn't clear, please feel free > to reply with any questions you might have and I'll try to > explain better. :-) > > > -- > -Jon- > > .-- Jon Steiger ---- jon@dakota-truck.net or jon@jonsteiger.com --. > | 1970 Barracuda - 1990 Dakota 'vert - 1992 Ram 4x4 - 1996 Dakota | > | 1996 Intruder 1400 - 1996 Kolb FireFly - 2001 Ram QC 3500 CTD | > `------------------------------------ http://www.jonsteiger.com --'
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