Allot Catalytic Converter Heat Shield Jangle
Catalytic converters acquire bona fide febrile -- upwards of 900- to 1,000-degrees F in some cases. These kinds of temperatures are also than Sufficiently to automatically kindle grease, oil and transmission fluid, mainly whether it happens to come into conduct contact with the catalytic converter, recurrently referred to simply as the "cat." On the other hand, these kinds of temperatures further bear a form of expanding metal to the extremes of its tolerance; extremes that it may or may not completely repay from. Converter heat shield rap is really annoying, however is remedied with a infrequent basic materials.
Instructions
1. Spray the converter's heat shield bolts with penetrating oil approximately an period before you life to endeavor on them. Converter bolts Testament heat-seize good akin any other bolts in your exhaust method, and a bit of penetration oil can hardihood a elongated plan toward preventing a Misfortune with snapped bolt heads.
2. Remove the heat shield bolts and then the heat shield. Wash it with soap and drench and appropriate a Stare at its inside. Odds are that you'll good buy it stupid and discoloured. You hankering the inside of your heat shield flare and shiny so that it reflects heat back toward the converter instead of soaking it up and radiating it into your back into your engine. Moxie ahead and polish the inside of the heat shield with some 200-grit, 400-grit and then 800-grit sandpaper.
4. Lay half-dozen washers sized to your heat shield bolts flat on the header wrap. Hit them with a quick coat of fast-drying spray paint. When you remove the washers, you'll have a perfect outline of them on the header wrap.
3. Section away a unusual two-inch extensive sections of header wrap. Header wrap is a gauze-like material that hot rodders often wrap around header primary tubes to keep heat inside the header. This layer of insulation keeps heat inside the header where it can increase pressure and exhaust gas velocity instead of heating the engine bay. Cut out your wrap "washers" with scissors, and trim the middle out with a penknife.
5. Clean the penetrating oil from the threads and put a pencil eraser-sized dab of anti-seize compound on them. Place one or two of your wrap washers between the converter and the heat shield and reinstall the heat shield using either the original lock washers or nuts or new ones if your car didn't come with any.
6. Tighten the heat shield bolts to factory spec, or to about 40 foot pounds if you don't know the factory spec. Try to jiggle the heat shield; the wrap washers should have taken up the space caused by bolt stretching and heat shield warpage, and should prevent rattling in the future.
