New answers tagged


I use High temp anti-seize compound, Nickel compounds are best but more expensive than copper, which will do in your case unless it is turbocharged, then use Pure Nickel compound.


The catalyst support ( the ceramic you see) breaks up because of thermal shock. This was a big problem up to about 1980 ,then better support ceramics were developed that don't breakup. I emptied about three converters in vehicles older than 1980, just remove the large Allen nut on the bottom for a couple weeks. I could no longer get on the expressway because ...


Most cats get blocked with a combination of combustion products and burnt oil. This happens due to two main causes: a worn engine allowing oil into the exhaust (valve seals, rings etc) the wrong oil being used - this is a common issue as people don't check for the correct grade of oil and, in many cases, opt for the cheapest. Some cats can be cleaned but ...

Top 50 recent answers are included