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2013-14 Shelby GT500
how much boost does the 10% lower pulley create?
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<blockquote data-quote="mike69440" data-source="post: 12297124" data-attributes="member: 3142"><p><strong>That compressor map sure tells a lot</strong></p><p></p><p></p><p></p><p>Thank you very much for the compreesor map!</p><p></p><p>That is excellent information. I did not realize that the TVS was that small. I suspect the efficiency map is the blower efficiency less mechanical losses as the TVS seem very good, i.e almost 20% better than most Roots.</p><p></p><p>Look at the sweet spot around the BEP and you see the TVS is an excellent blower up to about 12-15 Psig and 14,000 RPM. The efficiency map lines also cover a large area, meaning that the blower works nicely over a wide range of speed and pressure ratio. The 2.3 TVS is a good blower for a street Termi, not the GT 500.</p><p></p><p>For a TVS sized to match the pump gas potential of the 5.8, 3.3 L is more appropriate. </p><p>I can only imagine what the design and tooling cost would be for a larger TVS rotor scroll! As a larger TVS would not have the OEM volume, cost would probably match at TS. As the 5.8L stock makes 600 RWHP on a good day, I suspect there will be no call for a larger TVS from the OEM group.</p><p></p><p>It would be interesting to see the compressor maps from Whipple and KB and the Lysholm 3300 <a href="http://www.lysholm.us/gt500.php" target="_blank">http://www.lysholm.us/gt500.php</a></p><p></p><p>Note that HP gain comes from both Lower IAT and less power required to drive a larger blower. A larger blower could consume 40 HP less at 6500 RPM. Lower IAT, Maybe 30 HP? This will get interesting with the 5.8 having Ford GT cam profiles. I realize that another 75 peak HP will not change 1/4 mile times by that much, but it will make a heck of a dyno graph.</p></blockquote><p></p>
[QUOTE="mike69440, post: 12297124, member: 3142"] [b]That compressor map sure tells a lot[/b] Thank you very much for the compreesor map! That is excellent information. I did not realize that the TVS was that small. I suspect the efficiency map is the blower efficiency less mechanical losses as the TVS seem very good, i.e almost 20% better than most Roots. Look at the sweet spot around the BEP and you see the TVS is an excellent blower up to about 12-15 Psig and 14,000 RPM. The efficiency map lines also cover a large area, meaning that the blower works nicely over a wide range of speed and pressure ratio. The 2.3 TVS is a good blower for a street Termi, not the GT 500. For a TVS sized to match the pump gas potential of the 5.8, 3.3 L is more appropriate. I can only imagine what the design and tooling cost would be for a larger TVS rotor scroll! As a larger TVS would not have the OEM volume, cost would probably match at TS. As the 5.8L stock makes 600 RWHP on a good day, I suspect there will be no call for a larger TVS from the OEM group. It would be interesting to see the compressor maps from Whipple and KB and the Lysholm 3300 [url]http://www.lysholm.us/gt500.php[/url] Note that HP gain comes from both Lower IAT and less power required to drive a larger blower. A larger blower could consume 40 HP less at 6500 RPM. Lower IAT, Maybe 30 HP? This will get interesting with the 5.8 having Ford GT cam profiles. I realize that another 75 peak HP will not change 1/4 mile times by that much, but it will make a heck of a dyno graph. [/QUOTE]
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2013-14 Shelby GT500
how much boost does the 10% lower pulley create?
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