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Corvette
Corvette Performance
Porting Your Intake a Waste of $$?
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<blockquote data-quote="Riley P" data-source="post: 2714" data-attributes="member: 2"><p>Found it! Or something like it....It looks like leaks affect LS2 intakes as they are three piece intakes, not the LS6 or LS1 intakes. <a href="http://www.ls1gto.com/forums/showthread.php?t=289456" target="_blank">LS1GTO.com Forums - LS2 Intake vs LS1/LS6/FAST 78/90 Intakes</a></p><p></p><p>"After conducting numerous tests on our Superflow 600 flow bench to benchmark the LS6, LS2, and aftermarket manifolds, it was determined that the one fatal flaw of the LS2 design was that it allowed a minuscule amount of air to leak internally past the welds," says Incaudo. "As the combined head- and intake-flow requirements increased on modified engines, the problem was amplified, especially in the upper rpm range."</p><p></p><p>While it might be tempting to simply seal all of the leaking welds, welding the seams for a leak-free fit is actually quite difficult. Furthermore, the potential for failure when modifying the manifold using polymer-based adhesives is unacceptably high. "Rather than 'repair' the manifold, we developed a porting program that will flow more air, thus raising the power potential to levels typically seen only on high-dollar aftermarket intakes," says Incaudo. "On stock applications we normally see 5-10hp increases, with up to 20 hp available on engines with ported heads, higher-lift cams, and free-flowing exhaust."</p><p></p><p>I still do not understand how porting a intake with internal leaks makes more power besides lowering the restriction. Having internal leaks just plain ol freaks me out.</p></blockquote><p></p>
[QUOTE="Riley P, post: 2714, member: 2"] Found it! Or something like it....It looks like leaks affect LS2 intakes as they are three piece intakes, not the LS6 or LS1 intakes. [url=http://www.ls1gto.com/forums/showthread.php?t=289456]LS1GTO.com Forums - LS2 Intake vs LS1/LS6/FAST 78/90 Intakes[/url] "After conducting numerous tests on our Superflow 600 flow bench to benchmark the LS6, LS2, and aftermarket manifolds, it was determined that the one fatal flaw of the LS2 design was that it allowed a minuscule amount of air to leak internally past the welds," says Incaudo. "As the combined head- and intake-flow requirements increased on modified engines, the problem was amplified, especially in the upper rpm range." While it might be tempting to simply seal all of the leaking welds, welding the seams for a leak-free fit is actually quite difficult. Furthermore, the potential for failure when modifying the manifold using polymer-based adhesives is unacceptably high. "Rather than 'repair' the manifold, we developed a porting program that will flow more air, thus raising the power potential to levels typically seen only on high-dollar aftermarket intakes," says Incaudo. "On stock applications we normally see 5-10hp increases, with up to 20 hp available on engines with ported heads, higher-lift cams, and free-flowing exhaust." I still do not understand how porting a intake with internal leaks makes more power besides lowering the restriction. Having internal leaks just plain ol freaks me out. [/QUOTE]
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Corvette
Corvette Performance
Porting Your Intake a Waste of $$?
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