The biggest byproduct of internal combustion is water vapor (burning HYDROcarbons). That's why exhaust systems rust from the inside out. That's also why a car that has never seen road or beach salt can have hopelessly rusted exhaust hardware. Bill Robertson #5939 >--- In dmcnews@xxxxxxxxxxxxxxx, Jeff Phillips <rvparty@xxxx> wrote: > > I Absolutely correct. I had to cut my crossover pipe in half and > rewelded later. The nuts on the cat were so far gone that they were > rounded off. Even after having the cat/half-pipe out, cuting off the > studs, and pounding with a sledge I still couldn't separate it. Ended > up taking it to a muffler shop where they could heat it with a torch. > They replaced the flex portion and rewelded the pipe, all is good > now. > > To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/