Cat Heat Shield?

[94FSBlazer]

So I am installing a Flowmaster Universal Catalytic converter next week - http://www.flowmastermufflers.com/c...rsal-223-series-300-in-inlet-outlet-49-state/ . This particular cat does not come with any heat shields. So I was wondering what was suggested for this? I was thinking of just putting some of the high-temp heat guard matting on the underside between the cat and floor of truck. But wasn't sure about the bottom of the cat towards the ground. Do most people just leave it without one? Or fab up something yourself? I contacted Flowmaster and asked if they made anything, and they said they did not for these cats. I wasn't too worried about the heat as far as causing fire on shrubs or grass since Im mostly doing city driving, but then I was wondering if these heat shields serve a purpose to keep the cats in the proper heat range as well. Let me know what you guys think. Just never thought about this since my last two cats i put on my other trucks had the heat shields on them. Im trying something different with this truck tho, and want to use this universal cat. Btw this is on a 1994 chevy 2dr full-size Blazer. Thanks for the help

 

[Tonyrodz]

I think you're putting too much thought into it. I think if they needed the heat to work properly, Flowmaster would've put them on. My 03 cats didn't have heat shields, and they were OEM. I think you'll be fine. Your truck should already have some kind of heat shield founder the floor, on top of the factory cat location.

 

[Kenny D]

Couple of cheap cake pans and some bailing wire?

 

[94FSBlazer]

cake pans it is!
Maybe I am overthinking it. I just remember years ago being in an OBS truck that was heating up like crazy inside, and later the owner told me it was because he didn't have anything blocking the heat from the top of his cat. But hey, if it isn't a big deal, then Im fine leaving it how it is. If it gets hot, ill throw some of that heat shield mat underneath. Other than that, Ill just try not to park in any tall grass

 

[PG01]

Yeah, above to floor would be all id worry about, underneath, not a big deal. Years ago i had an 87 pickup with the pancake type filled with little pellets, and when it was going bad the f'er got cherry red hot until i hollowed it out, i wouldnt worry about the underside dude, ur good to go.

 

[Tonyrodz]

Yeah, above to floor would be all id worry about, underneath, not a big deal. Years ago i had an 87 pickup with the pancake type filled with little pellets, and when it was going bad the f'er got cherry red hot until i hollowed it out, i wouldnt worry about the underside dude, ur good to go.

Not sure how old you are, but I remember when I was younger, those lousey pellet filled converters were causing a lot of car fires, from getting plugged up or parking above dry grass or leaves. The good old days.

 

[Kenny D]

Not sure how old you are, but I remember when I was younger, those lousey pellet filled converters were causing a lot of car fires, from getting plugged up or parking above dry grass or leaves. The good old days.

And the sound of a hissing exhaust. Sounded like an air leak.