: Please help - replacing Catalytic Converter and having issues

05-20-11, 11:12 PM
Can anyone tell me approximately how hot the ht4100 engine gets on an 84 Deville?

I am replacing my Catalytic Coverter, and the little tube coming off the side of the new CAT requires welding to the old tube (I believe it delivers Oxygen)....the problem is I don't have a welder. Could I maybe use a high-heat rubber hose (with hose clamps) to attach the two small tubes instead of welding them together? Would there be any issues with that?? I was a little worried because it is on the CAT and I thought she gets pretty darn hot...

Your help would be greatly appreciated, I've been fighting this replacement for 2 days... :thepan:

05-20-11, 11:27 PM
I had a hose on one before with no problems.

05-21-11, 12:38 AM
The inside of a converter runs between 1200 and 2000 degrees Fahrenheit and the exterior usually stays around 700 degrees (but can go up to 1000).

So... Try to find rubber or neoprene hose that can withstand 1000 degrees.

Robin Banx
05-21-11, 09:46 PM
You should be able to buy a replacement AIR Management System to Cat Converter hose kit for that car from NAPA. I bought one for my 81 SDV in 2005. The hose was made of silicone and is still in place on the car. No problems.

05-22-11, 07:17 PM
I know in ma you can just cut the old cat out and not run one and still pass inspection
Then bring cat to junk yard and get 50-75. Buck for it