Skip the auto shop - Our mechanics make house calls

Q: What type of exhaust piping can be welded using a mig welder

asked by on

I would like to straight pipe my car but i'm not sure what type of piping material I should buy or what size of piping. I have a 1.8l gas engine non-turbo'd. I can measure and weld the piping i'm just not sure what size of piping would be best for both sound and power.
My car has a manual transmission.

I would stick with mild steel exhaust tubing and use 18 gauage or 16 gauage (thicker wall) to weld with a MIG welder. If you use "aluminized" tubing - available from the big box aftermarket suppliers, that’s should be okay but just remember to thoroughly grind the 1/2" or so of heat-affected area where you will weld. As for diameter, going more than 1/4" in diameter larger than the stock pipe diameter (1 3/4" vs 1 1/2" for example), is excess weight and money. A small amount of "backpressure" is needed in the exhaust system.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: EPC keeping car from starting

The EPC light is indicating a fault in the electronic throttle control system. The best way to narrow down the issue is to read out the fault codes in the engine management system; there could be issues with the throttle...

Q: My right front turn signal and right rear taillights are not working.

Hello there, installing aftermarket components like the stereo do not always work out properly on your 1998 Mitsubishi Galant. When installing aftermarket radios with the adapter harness all of the wires should have a place to go and all components...

Q: Engine ticking and smoking.

It is possible that the ticking sound you are hearing could be an exhaust manifold leak. This would also explain the gas type smell inside the car. An engine this age may have some oil leaks as well which could...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...