Heatshield rattle
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Heatshield rattle
Starting to really piss me off, and Im having a hard time tracking down exactly which one is doing it.
If I gut the cats, is it safe to remove the sheilds completely?
edit by jason for damn puntuation and capatalization.
If I gut the cats, is it safe to remove the sheilds completely?
edit by jason for damn puntuation and capatalization.
98 Steel Widebody RSTi-RA Superbeast
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If you have any doubts there is a long way around to finding out which one is rattling (I did this on my girl friends car) I took a couple metal shimms and shoved them between the exhaust pipe and the heat shield. I did this one at a time until I found the one that made the rattle stop. Then I tacked the shileds to the pipe. That worked...I just think being destructive with a grinder is a lot more fun than being constructive with a welder.
Sorry...I'm a power tool engineer. I like to break stuff.
Sorry...I'm a power tool engineer. I like to break stuff.
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There are bolts that can be taken off but they were always in such bad (rusted) shape on mine I just cut em off. Depending on where you are in the country you might be able to turn them. NY isn't nice on the undersides of cars. If you can't get it off with a wrench get a grinding tool and grind em down. If you can get a socket on there I would hit it with an impact wrench, set to a low impact (if you start wrenching on the exhaust you can start to loosen other things up, which is never good).
the heat shields around the turbo should be left on. They protect the wiring from getting too hot and brittle, and there is a shield that protects the heat from the speedometer cable, and plastic gear in the tranny. The other heat sheilds can be removed, but I wouldnt mess with the ones near the turbo.
The ones who have taken them off, well, you are just decreasing the life of underhood components greatly. It is fairly easy to fix rattles without removal. either drill and add new bolts and nuts, make sure all the brackets are mounted, etc...
The ones who have taken them off, well, you are just decreasing the life of underhood components greatly. It is fairly easy to fix rattles without removal. either drill and add new bolts and nuts, make sure all the brackets are mounted, etc...
91 Legacy Sport Sedan 4eat
91crx si 165k
91 Civic RT4WD manual trans 168k
91crx Si 40.5k
85 BRAT Gl 140
97 SVX 74k
91crx si 165k
91 Civic RT4WD manual trans 168k
91crx Si 40.5k
85 BRAT Gl 140
97 SVX 74k
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What makes you say that? You think the overall underhood temperatures get really warmer without the shielding?Bheinen74 wrote:The ones who have taken them off, well, you are just decreasing the life of underhood components greatly.
'00 Impr RS - sold
'91 Legacy Turbo 5MT - mothballed
13psi, TurboXS TBE, WRX IC, Hallman MBC, TurboXS FCD, KYB AGX, Phil's STI seat, SPT short shifter, David Carter hood, Zeitronix widebandO2, Kuhmo rally tires, STI IC spray, thanks:gearboxtech.com
'91 Legacy Turbo 5MT - mothballed
13psi, TurboXS TBE, WRX IC, Hallman MBC, TurboXS FCD, KYB AGX, Phil's STI seat, SPT short shifter, David Carter hood, Zeitronix widebandO2, Kuhmo rally tires, STI IC spray, thanks:gearboxtech.com
on turbo models, there are heat deflectors around the turbo, on the under side, that deflect the heat away from the transmission, and SPEEDO cable. And of course the chminey. If you remove the one on the underside, the one that protects the speedo cable, then YES. They have a purpose.No wonder so many people have to replace the bottom end of the speedo cable, cause they got too hot without the shield.
91 Legacy Sport Sedan 4eat
91crx si 165k
91 Civic RT4WD manual trans 168k
91crx Si 40.5k
85 BRAT Gl 140
97 SVX 74k
91crx si 165k
91 Civic RT4WD manual trans 168k
91crx Si 40.5k
85 BRAT Gl 140
97 SVX 74k
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Okay, I used an angle-grinder to get the really rusty part of the heatshield off. Except, I can't get the top part of the heatshield out! It's on the right-angle pipe going from the driver-side cylinders to the cat. The front sway bar and about four other things are blocking it from coming out. Any suggestions?
Rattle seems to be gone though... weird. The top part is even looser than before.
Rattle seems to be gone though... weird. The top part is even looser than before.
Last edited by thefultonhow on Sat Apr 15, 2006 8:05 pm, edited 1 time in total.
-- David
1990 Subaru Legacy L+ 4WD Wagon 5MT, white with 66k miles -- SOLD
[url=http://www.g20.net/forum/showthread.php?t=66214]1992 Infiniti G20 5MT[/url], White Sandstone with 175k miles
1990 Subaru Legacy L+ 4WD Wagon 5MT, white with 66k miles -- SOLD
[url=http://www.g20.net/forum/showthread.php?t=66214]1992 Infiniti G20 5MT[/url], White Sandstone with 175k miles
Usually taking a rubber mallet (or a hammer wrapped generously in cloth) and pounding on your exhaust at each location will usually show you where the rattle is.
If it's a cat that rattles, a ghetto fix is just to beat the crap out of it until it dents and usually pinches up that loose honeycomb stuff inside. On my legacy, I found a really loose heat shield and fixed a rattling cat temporarily (until the honeycomb fell apart more) with those two methods.
(I know the thread is old, but I figure someone could use the help)
If it's a cat that rattles, a ghetto fix is just to beat the crap out of it until it dents and usually pinches up that loose honeycomb stuff inside. On my legacy, I found a really loose heat shield and fixed a rattling cat temporarily (until the honeycomb fell apart more) with those two methods.
(I know the thread is old, but I figure someone could use the help)
SUBARUEHS Racing
One of the techs at Smart Service in Seattle spent about 15 minutes on mine with wire and metal screws. Helps to have a lift...It worked great though. He just drilled screws in at odd angles to take up the slack and wire tied stuff down...
No rattles when the engine starts and the one nasty rattle when the engine turns off are gone.
Lately though I've noticed a rattle when I close the left rear passinger door. Can you believe it? When I load my son in his car seat!
Heatshiels are coming off soon as is my stock muffler setup...
No rattles when the engine starts and the one nasty rattle when the engine turns off are gone.
Lately though I've noticed a rattle when I close the left rear passinger door. Can you believe it? When I load my son in his car seat!
Heatshiels are coming off soon as is my stock muffler setup...
93SS 5MT White, TD05-16G, TMIC, 3"Turboback, Magnaflow, Alu Rad, H&R Sports, AGX struts, F/R STBs, Whiteline Sways, ALK+Endlinks, Odyssey 925, AC delete, Evo8 Recaros, Sparco 4p, 3.9 LSD, Hellas+air horns, IPD short throw, 99RSrims, s03's
As part of the vf 34 upgrade, a bigger diameter divorced down pipe was fabricated. The waste gate dump valve is bigger than the vf11's.
Next, removed the cat(no rattles now) and put in a Vibrant ultra resonator. The Vibrant silencer is 2.5 inches in and two 2 inch pipes out.
This is likely constrictive to the higher out put, but I have yet to instal the 2.25 inch electric exhaust cut out.
Maybe I should use it to by pass the silencer
Just think---three pipes out the back --- definately not a fart can
Sounds real good as it is now
Next, removed the cat(no rattles now) and put in a Vibrant ultra resonator. The Vibrant silencer is 2.5 inches in and two 2 inch pipes out.
This is likely constrictive to the higher out put, but I have yet to instal the 2.25 inch electric exhaust cut out.
Maybe I should use it to by pass the silencer
Just think---three pipes out the back --- definately not a fart can
Sounds real good as it is now
Subtle (normally aspirated engines suck):
05 Legacy GT Wagon with Cobb chip.
62 Alfa Romeo Spider- had a 1.6 L with 80 hp, now 2 L with 160 torque. Curb weight 2050 lbs.
93 Leg Twgn fmic, vf34, etc. ((sold))
05 Legacy GT Wagon with Cobb chip.
62 Alfa Romeo Spider- had a 1.6 L with 80 hp, now 2 L with 160 torque. Curb weight 2050 lbs.
93 Leg Twgn fmic, vf34, etc. ((sold))
Re: Heatshield rattle
I cut off the bottom part of the cat heatshield last night. The whole dang thing was loose. Is there a trick to getting the top piece off? Lots of stuff in the way. thanks
Re: Heatshield rattle
You'll probably have to remove the exhaust to get the top piece off.
Josh
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
Re: Heatshield rattle
Heres the answer: I tood a dremel and slit the top down the center about 6 inches, that took a sawzall and cut from the one side to the slit...bent it easily at that point and out she came!