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  #1  
Old 08-27-2012, 06:34 PM
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SVX8588 SVX8588 is offline
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Are heat shields necessary?

So I have lots of exhaust buzzing and rattling. I think most of it is the heat shields, but I suppose my resonator could be contributing as well.
Are the heat shields on the front pipes really necessary? I would prefer to replace them, of course, but I imagine they would be quite pricey to buy new.
So I'm thinking I'll just take them off unless there is some major reason not to. I don't drive in dry hay fields or anything like that. Then at least I'd be able to tell where the rest of the noise is coming from.
Or if someone has a used set of heat shields (non-rusted-to-pieces) that they are selling cheap, let me know.
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SOLD - 1992 LSL 180K #8588 with svxfiles' all aluminum radiator; Wolf's head synthetic ATF in tranny and power steering; lighted power mode switch; Mobil 1 10W30 motor oil with Bosch 72158 filter; ACDelco A975C air filter; Valvoline synthetic 75W-90 gear oil, Optima BlueTop battery
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Old 08-27-2012, 07:11 PM
oab_au oab_au is offline
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Re: Are heat shields necessary?

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Originally Posted by SVX8588 View Post
So I have lots of exhaust buzzing and rattling. I think most of it is the heat shields, but I suppose my resonator could be contributing as well.
Are the heat shields on the front pipes really necessary? I would prefer to replace them, of course, but I imagine they would be quite pricey to buy new.
So I'm thinking I'll just take them off unless there is some major reason not to. I don't drive in dry hay fields or anything like that. Then at least I'd be able to tell where the rest of the noise is coming from.
Or if someone has a used set of heat shields (non-rusted-to-pieces) that they are selling cheap, let me know.
Besides not starting fires, they are to keep the exhaust gas temp up, that the catalytic converters need to work. You may have trouble getting them hot enough to pass emissions.

Harvey.
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  #3  
Old 08-27-2012, 07:15 PM
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Re: Are heat shields necessary?

Lucky me - there's no emissions testing in VT
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SOLD - 1992 LSL 180K #8588 with svxfiles' all aluminum radiator; Wolf's head synthetic ATF in tranny and power steering; lighted power mode switch; Mobil 1 10W30 motor oil with Bosch 72158 filter; ACDelco A975C air filter; Valvoline synthetic 75W-90 gear oil, Optima BlueTop battery
2002 F550 74K
SOLD - 2000 F450 215K
1987 BMW 535i 209K
1999 Yamaha SRX 700
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Old 08-28-2012, 08:16 AM
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Re: Are heat shields necessary?

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Lucky me - there's no emissions testing in VT
I also have no emissions testing in Monroe County. I had to keep repairing my shields (new bolts, welding). They seemed to always break and rattle. So I took them off. No more rattling noise.
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Old 08-28-2012, 08:27 AM
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Re: Are heat shields necessary?

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Besides not starting fires
+1 on fire prevention when you park in the dry grass.

Gene
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Old 08-28-2012, 09:34 AM
Ricter Ricter is offline
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Re: Are heat shields necessary?

I'd investigate the resonator first. Mine rattled like crazy, and it was easily replaceable. See about replacing that first and the front heat shields may not even be an issue.
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Old 08-28-2012, 03:40 PM
Lookin4SVX Lookin4SVX is offline
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Re: Are heat shields necessary?

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I'd investigate the resonator first. Mine rattled like crazy, and it was easily replaceable. See about replacing that first and the front heat shields may not even be an issue.
Here is a video of shot resonator.

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Old 08-28-2012, 08:08 PM
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Re: Are heat shields necessary?

No, it's definitely mostly the heat shields. I think one only has one bolt left and a big hose clamp holding it together and the other has 2 bolts maybe. They are rusted quite badly. I guess I'll take them off and then see how it sounds.
It won't sound like a ricey honda anymore...
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SOLD - 1992 LSL 180K #8588 with svxfiles' all aluminum radiator; Wolf's head synthetic ATF in tranny and power steering; lighted power mode switch; Mobil 1 10W30 motor oil with Bosch 72158 filter; ACDelco A975C air filter; Valvoline synthetic 75W-90 gear oil, Optima BlueTop battery
2002 F550 74K
SOLD - 2000 F450 215K
1987 BMW 535i 209K
1999 Yamaha SRX 700
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