carkhz316 Posted April 1, 2009 Report Share Posted April 1, 2009 Well, like topic says, I'm wondering what the piping sizes are, past/ downstream of the Cat. converter. Here's the kicker. It's for my euro, which being a 3.1, is original piping to right in front of the rear wheels. Need that pipe size, I.D. and/or O.D. From there on, I have it cobbled together (which is now leaking, I'm getting sick of booger-welding it back together) to a dual setup from a Z34. I am almost sure there is a difference in pipe size, but regardless, need both specs, from both pipes, so I can splice in a chunk of good pipe, and probably the necessary adapter on one end. I tried doing a quick search, and couldn't find what I wanted, so if there are any fellow W members who are bored and can help me out, that would be sweet. Thanks!! Quote Link to comment Share on other sites More sharing options...
cperna15 Posted April 2, 2009 Report Share Posted April 2, 2009 goto http://www.overkillengineeringmotorsports.com/ and but there 3' exhaust kit, its so worth it it make your car sound so badass and scares the shit outta those ricer drivers i have it and i ran it with no cats no resanator and no mufflers. it might be a good idea th get a pair of glasspacks though but overall it was so worth it Quote Link to comment Share on other sites More sharing options...
Hairdo12 Posted April 2, 2009 Report Share Posted April 2, 2009 The 3.1 pipe after the cat is 2 in OD all the way to the muffler. The 3.4 dual exhaust is 2.25 in OD after the cat and 2in OD after the Y. What I did on my 3.1 Lumina is, I have the 2 in strait piping after the cat go directly into the 2.25 piping of the dual exhaust setup - Just before the first bend where it goes around the gas tank. I then used a 2 1/8 in clamp to hold it together. No need for adapters, fits perfectly. Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted April 3, 2009 Report Share Posted April 3, 2009 goto http://www.overkillengineeringmotorsports.com/ and but there 3' exhaust kit, its so worth it it make your car sound so badass and scares the shit outta those ricer drivers i have it and i ran it with no cats no resanator and no mufflers. it might be a good idea th get a pair of glasspacks though but overall it was so worth it ummm yeahhhh...... Quote Link to comment Share on other sites More sharing options...
jtwmechanic Posted April 3, 2009 Report Share Posted April 3, 2009 i am a total believer in do it your self, but when it comes to exhaust let a pro with a bender and a guarantee do it. it will last for years leak free and won't come loose if done right. Quote Link to comment Share on other sites More sharing options...
carkhz316 Posted April 3, 2009 Author Report Share Posted April 3, 2009 The 3.1 pipe after the cat is 2 in OD all the way to the muffler. The 3.4 dual exhaust is 2.25 in OD after the cat and 2in OD after the Y. What I did on my 3.1 Lumina is, I have the 2 in strait piping after the cat go directly into the 2.25 piping of the dual exhaust setup - Just before the first bend where it goes around the gas tank. I then used a 2 1/8 in clamp to hold it together. No need for adapters, fits perfectly. Thank you very much sir. This was the info I was looking for. i am a total believer in do it your self, but when it comes to exhaust let a pro with a bender and a guarantee do it. it will last for years leak free and won't come loose if done right. Agreed, though the section I'm trying to fix is just a straight, upstream from the Y, so it'll be a pretty easy fix with a chunk of good pipe. Quote Link to comment Share on other sites More sharing options...
jtwmechanic Posted April 3, 2009 Report Share Posted April 3, 2009 i thought you meant fix it not fix it. Quote Link to comment Share on other sites More sharing options...
intern8tion9l Posted April 3, 2009 Report Share Posted April 3, 2009 goto http://www.overkillengineeringmotorsports.com/ and but there 3' exhaust kit, its so worth it it make your car sound so badass and scares the shit outta those ricer drivers i have it and i ran it with no cats no resanator and no mufflers. it might be a good idea th get a pair of glasspacks though but overall it was so worth it ummm yeahhhh...... lolz. 3"=pointless Quote Link to comment Share on other sites More sharing options...
cperna15 Posted April 4, 2009 Report Share Posted April 4, 2009 well i have noticed the low end power drop from and i found someont to buy my exhaust, so should i but a 2.5 inch or goto stock Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted April 4, 2009 Report Share Posted April 4, 2009 2.25 if anything... Quote Link to comment Share on other sites More sharing options...
jtwmechanic Posted April 4, 2009 Report Share Posted April 4, 2009 i wouldn't have a exhaust clamp on my bike. weld it and show some pride! Quote Link to comment Share on other sites More sharing options...
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