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SVT Shelby GT500
PHRP H-Pipe welded into place and installed
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<blockquote data-quote="Tob" data-source="post: 10576497" data-attributes="member: 83412"><p>I noticed that Shelby was selling what is left of their production bin of H-pipe sections that were used to replace the factory X <em>section.</em></p><p></p><p>[ATTACH=full]173538[/ATTACH]</p><p><a href="http://www.shelbystore.com/product-p/s8m-5251-kr.htm" target="_blank">Shelby GT500KR Exhaust H-Pipe</a></p><p></p><p>I picked one up a few days ago, as much out of curiosity as for a backup H-pipe assembly that I'd like to piece together. Having had the PHRP assembly in my hands I was itching to see how the original compared to the X section that I removed from the OE pipes.</p><p></p><p>[ATTACH=full]173539[/ATTACH]</p><p></p><p>One of the crossover pipe welds appears to have been done by a rotary machine. The other appears to have been done by Shakes Mcgillicutty, the same guy that fabbed up the axle breather tanks from Shelby.</p><p></p><p>[ATTACH=full]173540[/ATTACH]</p><p></p><p>Keeping it in perspective, some of the UAW's finest are not to be outdone with their work on the OE X-pipe. Here's a well done attempt at production line booger making...</p><p></p><p>[ATTACH=full]173541[/ATTACH]</p><p></p><p>Interesting how Shelby got the tone on their KR's via this pipe (along with KR mufflers). They cut a slice through the crossover and inserted a large washer inside and then welded it back up...</p><p></p><p>[ATTACH=full]173542[/ATTACH]</p><p></p><p>I used my Milwaukee Tools Coloncam to get a closeup view as to how they did it as well to check for any slag polyps. I have to admit I was impressed as to how well everything looked inside.</p><p></p><p>[ATTACH=full]173543[/ATTACH]</p><p></p><p>Next up, I wanted to check the bend angles for accuracy (I have another complete X-pipe assembly and they are both identical, so I'll assume them to be the standard to verify with). In this case (as with the PHRP pipe) the angles aren't a perfect match but they were slightly better than the bends on the PHRP pipe.</p><p></p><p>[ATTACH=full]173544[/ATTACH]</p><p></p><p>The KR pipe had only one side that was off (by a couple of degrees).</p><p></p><p>[ATTACH=full]173545[/ATTACH]</p><p></p><p>This pipe did not come with any clamps (as my PHRP pipe did, albeit with added expense). The bend deviation would easily be accommodated via the clamps if you were to cut/replace/clamp/install, just as the PHRP piece would. I do think with the KR piece being closer to OE bend wise that you wouldn't have to "straighten" anything prior to welding. I believe the KR pipe is 409 stainless, just as production. IIRC, the PHRP pipe was 304, a superior material for an exhaust system.</p><p></p><p>The KR pipe diameter matched the OE piece in diameter and in wall thickness...</p><p></p><p>[ATTACH=full]173546[/ATTACH]</p><p></p><p>Another nice touch, the KR pipe utilizes the same welded on "locating tangs" as OE...</p><p></p><p>[ATTACH=full]173547[/ATTACH]</p><p></p><p>An economical buy that no doubt offers a somewhat deeper (yet subdued) tone. Thumbs up from me.</p><p></p><p>Tob</p></blockquote><p></p>
[QUOTE="Tob, post: 10576497, member: 83412"] I noticed that Shelby was selling what is left of their production bin of H-pipe sections that were used to replace the factory X [i]section.[/i] [ATTACH=full]173538[/ATTACH] [url=http://www.shelbystore.com/product-p/s8m-5251-kr.htm]Shelby GT500KR Exhaust H-Pipe[/url] I picked one up a few days ago, as much out of curiosity as for a backup H-pipe assembly that I'd like to piece together. Having had the PHRP assembly in my hands I was itching to see how the original compared to the X section that I removed from the OE pipes. [ATTACH=full]173539[/ATTACH] One of the crossover pipe welds appears to have been done by a rotary machine. The other appears to have been done by Shakes Mcgillicutty, the same guy that fabbed up the axle breather tanks from Shelby. [ATTACH=full]173540[/ATTACH] Keeping it in perspective, some of the UAW's finest are not to be outdone with their work on the OE X-pipe. Here's a well done attempt at production line booger making... [ATTACH=full]173541[/ATTACH] Interesting how Shelby got the tone on their KR's via this pipe (along with KR mufflers). They cut a slice through the crossover and inserted a large washer inside and then welded it back up... [ATTACH=full]173542[/ATTACH] I used my Milwaukee Tools Coloncam to get a closeup view as to how they did it as well to check for any slag polyps. I have to admit I was impressed as to how well everything looked inside. [ATTACH=full]173543[/ATTACH] Next up, I wanted to check the bend angles for accuracy (I have another complete X-pipe assembly and they are both identical, so I'll assume them to be the standard to verify with). In this case (as with the PHRP pipe) the angles aren't a perfect match but they were slightly better than the bends on the PHRP pipe. [ATTACH=full]173544[/ATTACH] The KR pipe had only one side that was off (by a couple of degrees). [ATTACH=full]173545[/ATTACH] This pipe did not come with any clamps (as my PHRP pipe did, albeit with added expense). The bend deviation would easily be accommodated via the clamps if you were to cut/replace/clamp/install, just as the PHRP piece would. I do think with the KR piece being closer to OE bend wise that you wouldn't have to "straighten" anything prior to welding. I believe the KR pipe is 409 stainless, just as production. IIRC, the PHRP pipe was 304, a superior material for an exhaust system. The KR pipe diameter matched the OE piece in diameter and in wall thickness... [ATTACH=full]173546[/ATTACH] Another nice touch, the KR pipe utilizes the same welded on "locating tangs" as OE... [ATTACH=full]173547[/ATTACH] An economical buy that no doubt offers a somewhat deeper (yet subdued) tone. Thumbs up from me. Tob [/QUOTE]
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PHRP H-Pipe welded into place and installed
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