Heatshield on a cat

**WindeX** · 04-10-2006, 01:17 PM

Hey all,

The heatshield on the top of my cat has started to come loose and is making a very annoying rattle/virbation noise. I was wondering how much does the heat shield actualy do, can it be removed safely, or should I get the exhaust shop to tac it back on.

Cheers

**love ke70** · 04-10-2006, 01:25 PM

maybe your cat is shedding its fur as the warmer months are approaching and it feels no need for a heatshield anymore...

the idea of the heatshield is to keep the air inside warmer so it flows faster and stop things outside getting cooked

**TurboRA28** · 04-10-2006, 01:40 PM

Every cat/car i've had the headshield on the cat comes loose. I just remove them now and haven't noticed any ill effects.

Interesting about them being there to keep heat in.. I always thought it was to stop heat coming into the cabin... Ahh well!

**oldcorollas** · 04-10-2006, 02:00 PM

Originally Posted by TurboRA28

Every cat/car i've had the headshield on the cat comes loose. I just remove them now and haven't noticed any ill effects.

Interesting about them being there to keep heat in.. I always thought it was to stop heat coming into the cabin... Ahh well!

definitely to stop the bottom of the car burning up.
cats when working should be AT LEAST 400deg. you want something 400deg an inch away from your floorpan (and the flammable tar above it?)

maybe it would be no problem, but heat shields ftw

why not just reattach the heat shield? tack weld or two?

**WindeX** · 04-10-2006, 02:25 PM

Yes, well I was thinking of purchasing a welding device of some type... havent welded for about 5-6 years(did it in school) and that was oxy. Could a arc welder be of any use for this?

**love ke70** · 04-10-2006, 03:04 PM

arc welder would burn holes, the metal is too thin on most heatshields from my experience
mig would do the job

**styler** · 04-10-2006, 03:05 PM

well dont go buying a welder for 1 weld

if thats your plan....
just get a shop to do it, would be under $50 drive in / out if simple.

arc welders generally are usually used for thicker metal, not
thin sheet metal unless you are experienced. you can tack it on
with an arc but its easy to stuff it up if inexperienced.

a small mig would be more suitable especially for beginner / intermediate for thin and med thickness metal which is mainly in the car.

**love ke70** · 04-10-2006, 03:07 PM

he has a ta23. im sure that mig welder will come in handy for rust repairs

hehe

**airfireman1** · 04-10-2006, 03:39 PM

drive into an exhaust shop and ask them to weld it back on. they will have a mig welder and would take no longer than a few minutes,I would be suprised if they charge more than $30.00 considering the time involved. Heat shields are there for a purpose so removing it defeats the purpose, How else do you keep the heat away from the floor of your car. you dont want any smouldering carpets.
Cheers