we dont have smog here in corpus christi either as long as it looks like a cat your good. its gettin bad now im gonna have to do that today i think i just was wonderin if i can weld it with my stick welder or not

 

I remember something I was told by my SMSgt at my shop. (I work on fire trucks for the Air Force). Something along the lines about it having to we a lower temperature weld or something like that. So therefore, a normal welder machine wouldn't work from what I understand. But I can clarify it with him if you want me too since I can't exactly remember.

 

i would like to know if i can before i cut it open

 

I personally wouldn't run a gutted cat. The exhaust will swerl inside the cat and create a different back pressure and possibly rob you of HP.

We don't have smog test out here. But the state says that the exhaust system must be sealed. Says nothing about whats in line of the exhaust system.

 

+1 to that! The idea is to have little to no disturbance in exhuast flow and a big open chamber is a HUGE disturbance!

 

Im a certified welder / fabricator and I would not recommend a stick welder. You would need a very small rod and a very low heat setting. A mig welder would be your best bet. If you know how to or have a tig welder, even better. But yeah a mig welder will do the job fine. Probably on the lowest heat setting depending on the type/brand of mig welder. I know on my miller mig welder at work, the welder settings would be near 18 volts/ 175 wire speed for 1/16 aka 16 gauge metal. The small 110volt welders for automotive are great for this job.

Be careful of gas fumes. I normally use a small fan to move the fumes away from the vehicle. Also not blowing towards or past you in any way. The air flow will mess up your welds.

 

Well, there's your answer.

 

I cut mine out and put on a glass pack. Those cats are SUPER restrictive and hold a TON of heat. Bad for hunting and parking in tall grass. I have seen fields burn from hot cats.

We also dont have any regulations here either. If we did, I would have cut it open, gutted it, welded it back shut, and hoped for the best.

Also, your truck will stink if you dont have a cat. Will smell like a 70's hot rod, IMO.

 

i just cut the catalytic converter of and put a glasspack on, it does smell like gas al the time but sounds great

 

Glasspack: Cherry bomb, dynomax, what brand do you have

I was planning on buying a glasspack to replace my muffler also. So what should I do if im also going to replace my cat with a glasspack also. (What did you do?)