I just bought a set of used high flow cats and I want to try to install them myself, but I hear horror stories of stripping the o2 sensor threads. What truly is the best way to remove the o2 sensors? Anybody want to help me do the install?
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anybody know how to install cats?
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Originally posted by cab2g View PostI just bought a set of used high flow cats and I want to try to install them myself, but I hear horror stories of stripping the o2 sensor threads. What truly is the best way to remove the o2 sensors? Anybody want to help me do the install?
If you're close to me I can give ya a hand....I'm in Norridge.
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Some people were saying that the exhaust should be hot, as in run the car for awhile before removing the o2 sensors. I didn't think that made sense because it would make the metal in the sensor expand and make it harder to take out! But that's what I was going to do. WD-40 makes more sense. I live out by lake barrington, so not too close, but if you're free next weekend, I could use a hand!
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Originally posted by cab2g View PostSome people were saying that the exhaust should be hot, as in run the car for awhile before removing the o2 sensors. I didn't think that made sense because it would make the metal in the sensor expand and make it harder to take out! But that's what I was going to do. WD-40 makes more sense. I live out by lake barrington, so not too close, but if you're free next weekend, I could use a hand!
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^ If yours is a Cat-Back.. It connects to the catted pipe and goes back from there.. The stock pipes you'll connect to that remain already have the rear O2 sensors in them. You won't need to remove them.
OP is talking about HiFlo cats which can be bought that replace the catted connection pipes.
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Originally posted by HumanWiki View Post^ If yours is a Cat-Back.. It connects to the catted pipe and goes back from there.. The stock pipes you'll connect to that remain already have the rear O2 sensors in them. You won't need to remove them.
OP is talking about HiFlo cats which can be bought that replace the catted connection pipes.sigpic
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Originally posted by bannonm View PostPhew, thanks for the clarification. I was starting to sweat.
Stock V8 Manifolds + Catted Pipes.. -- This is what you'll be hooking in to with your S-Type.
I'm assuming you're a V8......
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got my cats in the mail yesterday. I can't wait to install them. The installation instructions also say to remove the system including o2 sensors cold. So that's definitely what I'm going to do. At least that way I don't have to worry about burning my hands or buying heat resistant gloves or something. I had to buy some new stainless bolts a couple gaskets though. The guy forgot to include the bolts and I'm assuming you can't re-use a gasket...
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Might want to try a little PB Blast with its capillary action, as opposed to WD-40, esp. if there's any rustiness...01 Camaro SS 'vert: TSI Racing Built 4L60E,ARH Stepped Headers/Catted Y,Noweeds Diverter,SLP FlowPac & Dual-Dual Exhaust,SS Brake Lines,Koni 8241 SAs,Strano Sways,Fays2 Watts Link,UMI CM SFCs welded,Hotchkis Shock Brace,DDM HIDs
02 Camaro RS: Borla Cat-Back,DMH E-Valve,Whisper Lid,SLP CAI & Bilsteins,Auburn LSD,SS Sways,UMI 3pt CM SFCs welded,BMR CM Shock Brace,DDM HIDs
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ok, well, I am having the hardest time getting the o2 sensors out.... this is crazy. I applied PB blaster about 3 times and the exhaust is cool... I tried hammering the wrench, but that only seems to cause it to slip and tear up the bolt... if only those darn wires weren't attached I could use the impact wrench!
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I figured it out. the wrench slipped too much, so I rented some o2 sockets from oriley auto parts and after all the pb blaster, they came out using only my torque wrench. Unfortunately, the one I hammered the wrench on stripped some of its threads and I couldn't get it back into the bung. So I guess moral of the story is, use the right tool for the job and save $80. But the car sounds awesome now. I definitely don't feel the need to upgrade the exhaust anymore! the idle is quite a bit louder and WOT is heavenly. It's a great poor man's upgrade!
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