Hemi hellcat smokin' a cts-v video
12-14-2014, 12:39 PM
#61
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That is impossible, unless the timing is already set to zero across the board. Ambient temps of that magnitude require compensation of some type for even NA builds.
I'd love to see a Hellcat run a ZL1 or a V on a road course. I believe that's where the Hellcat would show its true weaknesses.
I'd love to see a Hellcat run a ZL1 or a V on a road course. I believe that's where the Hellcat would show its true weaknesses.
FYI, might want to check out the quoted paragraphs below that pertains to the Hellcat's " Low-Temp Cooling Loop "
Of particular note " This system is so effective that the Hellcat can be driven for 20 laps on a 3.1 mile road course in 100 degree ambient heat without the engine power de-rating."
Low-Temp Cooling Loop
"This brings us to the Hellcat's knock-out punch—the supercharger's low-temperature coolant loop. Here's a little known secret: In the boosted powerplants of most manufacturers, the rated horsepower is only valid under normal highway use for a limited period of full-throttle time. For safety's sake, once the air charge temperature elevates to levels where detonation and knock begin (such as at a race track) the engine controller limits ignition and boost to save the engine. This is called de-rating. When you see guys at the dragstrip packing their manifolds with ice before a run, they're trying to avoid de-rating the power of their engine.
With the Hellcat, the air-to-liquid intercooler operates on a low-temperature cooling circuit that is independent of the engine's cooling system. Competing powertrains operate on the same high-temp cooling loop as the rest of the engine, limiting their intercooler efficiency. By running a low-temp loop, the Hellcat's two heat exchangers—one in each bank of cylinders—can produce a much greater temperature differential. This system is so effective that the Hellcat can be driven for 20 laps on a 3.1-mile road course in 100-degree ambient heat without the engine power de-rating. (Among one of the torture tests Dodge engineers conducted was a grueling 24-hour endurance test at Nelson Ledges road course in Ohio.) "
Read more: http://www.hotrod.com/features/1502-...#ixzz3LtjIusiY
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12-15-2014, 10:10 AM
#63
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12-17-2014, 08:03 PM
#64
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FYI, might want to check out the quoted paragraphs below that pertains to the Hellcat's " Low-Temp Cooling Loop "
Of particular note " This system is so effective that the Hellcat can be driven for 20 laps on a 3.1 mile road course in 100 degree ambient heat without the engine power de-rating."
Low-Temp Cooling Loop
"This brings us to the Hellcat's knock-out punch—the supercharger's low-temperature coolant loop. Here's a little known secret: In the boosted powerplants of most manufacturers, the rated horsepower is only valid under normal highway use for a limited period of full-throttle time. For safety's sake, once the air charge temperature elevates to levels where detonation and knock begin (such as at a race track) the engine controller limits ignition and boost to save the engine. This is called de-rating. When you see guys at the dragstrip packing their manifolds with ice before a run, they're trying to avoid de-rating the power of their engine.
With the Hellcat, the air-to-liquid intercooler operates on a low-temperature cooling circuit that is independent of the engine's cooling system. Competing powertrains operate on the same high-temp cooling loop as the rest of the engine, limiting their intercooler efficiency. By running a low-temp loop, the Hellcat's two heat exchangers—one in each bank of cylinders—can produce a much greater temperature differential. This system is so effective that the Hellcat can be driven for 20 laps on a 3.1-mile road course in 100-degree ambient heat without the engine power de-rating. (Among one of the torture tests Dodge engineers conducted was a grueling 24-hour endurance test at Nelson Ledges road course in Ohio.) "
Read more: http://www.hotrod.com/features/1502-...#ixzz3LtjIusiY
Follow us: @HotRodMagazine on Twitter | HotRodMag on Facebook
Of particular note " This system is so effective that the Hellcat can be driven for 20 laps on a 3.1 mile road course in 100 degree ambient heat without the engine power de-rating."
Low-Temp Cooling Loop
"This brings us to the Hellcat's knock-out punch—the supercharger's low-temperature coolant loop. Here's a little known secret: In the boosted powerplants of most manufacturers, the rated horsepower is only valid under normal highway use for a limited period of full-throttle time. For safety's sake, once the air charge temperature elevates to levels where detonation and knock begin (such as at a race track) the engine controller limits ignition and boost to save the engine. This is called de-rating. When you see guys at the dragstrip packing their manifolds with ice before a run, they're trying to avoid de-rating the power of their engine.
With the Hellcat, the air-to-liquid intercooler operates on a low-temperature cooling circuit that is independent of the engine's cooling system. Competing powertrains operate on the same high-temp cooling loop as the rest of the engine, limiting their intercooler efficiency. By running a low-temp loop, the Hellcat's two heat exchangers—one in each bank of cylinders—can produce a much greater temperature differential. This system is so effective that the Hellcat can be driven for 20 laps on a 3.1-mile road course in 100-degree ambient heat without the engine power de-rating. (Among one of the torture tests Dodge engineers conducted was a grueling 24-hour endurance test at Nelson Ledges road course in Ohio.) "
Read more: http://www.hotrod.com/features/1502-...#ixzz3LtjIusiY
Follow us: @HotRodMagazine on Twitter | HotRodMag on Facebook
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