Cat converter heat sheild
#1
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Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, T5
Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
Cat converter heat sheild
i had to remove the catalitic converter heat shield a few years a go when i installed my SFC, alstons. I just recently built a new exhaust and just finished fitting a set of custom dual 3" cats, i havent run cats for a few years, got tired of the smell. I started the car up tonight and the floor is getting so hot over the cats that the undercoating is melting/smoking and the carpet is getting a bit warmer than i would like it to be. I actually had the car fill with smoke from the undercoating coming up through the shifter boot.
So my question is simple, i can just make a shield of of sheet metal right? it doesn't have to be a special material or have a special coating? Just bend and formed to the floor leaving a small air gap between it and the floor? about 1/2" or so?
any input?
thanks
-Phil
So my question is simple, i can just make a shield of of sheet metal right? it doesn't have to be a special material or have a special coating? Just bend and formed to the floor leaving a small air gap between it and the floor? about 1/2" or so?
any input?
thanks
-Phil
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I have the shield off of Berlinetta #2 that I won't be using. It's in good shape.
#4
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Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, T5
Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
Re: Cat converter heat sheild
hmmm, hadn't thought of that, the carb was tuned with the engine when it was built, so i dont think the carb could be the issue. I did however, just install a new fuel system and im having erratic pressure issues, maybe thats causing it if it is in fact lean?
Would the possible lean condition only cause the cats to overheat? or all the exhaust? because without the cats i never had a heat issue like this.
Would the possible lean condition only cause the cats to overheat? or all the exhaust? because without the cats i never had a heat issue like this.
#5
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Re: Cat converter heat sheild
The erratic pressure issues will definitely affect it.
Installing the cats possibly changed the fuel and timing the engine wants. But I'd say fix the pressure issue first and see.
The cats are more sensitive to fuel issues than the exhaust pipes are. You'll see the cats glowing red before the headers will.
Installing the cats possibly changed the fuel and timing the engine wants. But I'd say fix the pressure issue first and see.
The cats are more sensitive to fuel issues than the exhaust pipes are. You'll see the cats glowing red before the headers will.
#6
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Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, T5
Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
Re: Cat converter heat sheild
well i will try to get this fuel issue resolved this weekend and see what happens
thanks
-phil
thanks
-phil
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Car: 1990 Chevy Camaro
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Re: Cat converter heat sheild
You might try these sheilds... Pretty impressive!!!
http://www.verociousmotorsports.com/...nferno-Shields
http://www.verociousmotorsports.com/...nferno-Shields
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