catalytic converter question
Question:
I have heard good things of the cat-tube kit from summit.
– Hide quoted text — Show quoted text -> cut the old one out and go buy a performance cat from Jeg’s or Summit…. > you’ll be glad you did. as for reattaching them… it’s your perogative > whether to weld or clamp. no, you don’t need one with an air tube, it’s for > vehicles that use an air pump to inject extra oxygen into the cat to help > burn off hydrocarbons (GM never used that system on a truck engine, it’s > A.I.R. pump put air into the exhaust manifolds on early TBI engines, doing > away with them by ‘93) > I have to replace my catalytic converters on my 97 GMC Sierra ext. cab Z-71. > The chevrolet dealer quoted me between $500 and $800 to replace them. I am > wondering if I have to replace the entire tubing assembly (because that’s > the way that you have to order the oem replacement cats on this truck) or > can I cut the actual cats out and weld new ones in their place? I’ve found > an oem (or close to) cat system on summitracing.com (part #CTO-9333) and > I’ve found weld in cats also (by magnaflow on jeg’s). Also, I’ve seen > different cats, being 2-way or 3-way, what’s the difference between the 2 > and which one do I need? Also, do I need cats with AIR tubes (what are they > for anyway)? If anyone can help me out with these questions, I’d appreciate > it. Oh yeah, I have a friend that can help me weld anything if i need them > to, do you recommend this or should I use some form of clamp (assuming I can > use a cat only setup)? > Thanks again, > Richard Bullington
Response:
Catco is the supplier. Located in Connecticut. They will sell to the general public, less than summit. Might save on shipping too if your on the east coast. www.ctconvert.com Cheers I have to replace my catalytic converters on my 97 GMC Sierra ext. cab Z-71. The chevrolet dealer quoted me between $500 and $800 to replace them. I am wondering if I have to replace the entire tubing assembly (because that’s the way that you have to order the oem replacement cats on this truck) or can I cut the actual cats out and weld new ones in their place? I’ve found an oem (or close to) cat system on summitracing.com (part #CTO-9333) and I’ve found weld in cats also (by magnaflow on jeg’s). Also, I’ve seen different cats, being 2-way or 3-way, what’s the difference between the 2 and which one do I need? Also, do I need cats with AIR tubes (what are they for anyway)? If anyone can help me out with these questions, I’d appreciate it. Oh yeah, I have a friend that can help me weld anything if i need them to, do you recommend this or should I use some form of clamp (assuming I can use a cat only setup)? Thanks again, Richard Bullington
Response:
cut the old one out and go buy a performance cat from Jeg’s or Summit…. you’ll be glad you did. as for reattaching them… it’s your perogative whether to weld or clamp. no, you don’t need one with an air tube, it’s for vehicles that use an air pump to inject extra oxygen into the cat to help burn off hydrocarbons (GM never used that system on a truck engine, it’s A.I.R. pump put air into the exhaust manifolds on early TBI engines, doing away with them by ‘93)
I have to replace my catalytic converters on my 97 GMC Sierra ext. cab Z-71. The chevrolet dealer quoted me between $500 and $800 to replace them. I am wondering if I have to replace the entire tubing assembly (because that’s the way that you have to order the oem replacement cats on this truck) or can I cut the actual cats out and weld new ones in their place? I’ve found an oem (or close to) cat system on summitracing.com (part #CTO-9333) and I’ve found weld in cats also (by magnaflow on jeg’s). Also, I’ve seen different cats, being 2-way or 3-way, what’s the difference between the 2 and which one do I need? Also, do I need cats with AIR tubes (what are they for anyway)? If anyone can help me out with these questions, I’d appreciate it. Oh yeah, I have a friend that can help me weld anything if i need them to, do you recommend this or should I use some form of clamp (assuming I can use a cat only setup)? Thanks again, Richard Bullington
Response:
I have to replace my catalytic converters on my 97 GMC Sierra ext. cab Z-71. The chevrolet dealer quoted me between $500 and $800 to replace them. I am wondering if I have to replace the entire tubing assembly (because that’s the way that you have to order the oem replacement cats on this truck) or can I cut the actual cats out and weld new ones in their place? I’ve found an oem (or close to) cat system on summitracing.com (part #CTO-9333) and I’ve found weld in cats also (by magnaflow on jeg’s). Also, I’ve seen different cats, being 2-way or 3-way, what’s the difference between the 2 and which one do I need? Also, do I need cats with AIR tubes (what are they for anyway)? If anyone can help me out with these questions, I’d appreciate it. Oh yeah, I have a friend that can help me weld anything if i need them to, do you recommend this or should I use some form of clamp (assuming I can use a cat only setup)? Thanks again, Richard Bullington
