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SVTPerformance's Chain of Restaurants
Pics and Videos Buffet
5.bros and boss's don't road race your hellion TT
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<blockquote data-quote="oldmodman" data-source="post: 14188602" data-attributes="member: 10303"><p>I have been involved with turbo systems being run at Bonneville since 1977.</p><p>And my friends and I discovered really quickly that the only way to shield engine components from excess heat was a metal heat shield. We used a double layer of aluminum sheet with an air gap between the two sheets. So that gives you an air gap between the turbo housing and the first aluminum sheet, the sheet., another air gar, another sheet, and the final air gap next to the engine components. Since these turbos were producing around 40 psi in a totally sealed streamliner (except for carefully set up cooling ducts and exits) there was a tremendous amount of waste heat to protect against. The same type of thing was formed from stainless steel to fit around the hot side plumbing too.</p><p></p><p>With today's available coatings, plus thermal wraps, plus metal heat shields with an air gap it shouldn't be too difficult to control the heat. But it will still be necessary to vent the heat from the engine compartment. We used ducts of various volumes for both entrance and exit air flow. We learned very early on that you need a huge exit for a fairly small entrance. We actually had ballooning problems once due to too small an exit. The air pressure at 345mph actually deformed the shell around the rear engine area (we were running two engines to make that class size).</p></blockquote><p></p>
[QUOTE="oldmodman, post: 14188602, member: 10303"] I have been involved with turbo systems being run at Bonneville since 1977. And my friends and I discovered really quickly that the only way to shield engine components from excess heat was a metal heat shield. We used a double layer of aluminum sheet with an air gap between the two sheets. So that gives you an air gap between the turbo housing and the first aluminum sheet, the sheet., another air gar, another sheet, and the final air gap next to the engine components. Since these turbos were producing around 40 psi in a totally sealed streamliner (except for carefully set up cooling ducts and exits) there was a tremendous amount of waste heat to protect against. The same type of thing was formed from stainless steel to fit around the hot side plumbing too. With today's available coatings, plus thermal wraps, plus metal heat shields with an air gap it shouldn't be too difficult to control the heat. But it will still be necessary to vent the heat from the engine compartment. We used ducts of various volumes for both entrance and exit air flow. We learned very early on that you need a huge exit for a fairly small entrance. We actually had ballooning problems once due to too small an exit. The air pressure at 345mph actually deformed the shell around the rear engine area (we were running two engines to make that class size). [/QUOTE]
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5.bros and boss's don't road race your hellion TT
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