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Ultimate Subaru Message Board

Ken

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Profile Information

  • Location
    Ashland OR
  • Interests
    Mtn biking, swimming, fingerstyle guitar
  • Occupation
    Realtor
  • Vehicles
    01 Outback Ltd

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  1. Anybody know what new Subaru models are coming? Any spy photos or secret info would be cool.
  2. That dang rattle! I have had several Subys and have found a long term solution. 2 Outbacks with a total of 60K miles on the repairs. The nail and screw thing gets points for simplicity, but... I had my muffler guy pry off the shields (the tabs are easily broken). He then wrapped performance exhaust tape (1" wide) under where the shields go and then replaced (re crimped) the shields and further secured them with (very tight) stainless zip ties (for exhaust systems). 15' of exhaust tape $18. 12 Stainless Zip Ties $24. Labor $55. The exhaust tape smells like burnt paint (bad!) the first few drives. When I drive by a concrete wall I think the car is now slightly, but noticably quieter than new. The heat shields do serve some purposes... 1. They keep heat in the exhaust line which is theoretically more effecient (as a gas cools it contracts which flows more slowly which is less effecient if the system was originally designed around a particular exhaust velocity). 2. The catalytic converter relies (critically) on heat to function properly which is signifigantly preserved by the shields. 3. The signifigant escaped heat raises the underhood temp by maybe 10 or 20 (just a guess) at low speed which effects effeciency (heat dissapation is more effecient). Ok, "So far so what?" you ask. True these effects are probably negligible until the cooler and less effeciently catalytically converted gas reaches the inline exhaust sensor, which tells the computer to adjust the fuel mixture and other parameters and suddenly you have an engine with a potential quirk. 4. The shields help reduce in cabin noise (untill they rattle). 5. The shields help reduce the likelyhood of a dry grass fire.
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