New ZR1 sighting?
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Driver is the biggest factor at the track. The C6 Z06 is a somewhat challenging car, when it comes to pushing the performance envelope.
I don't put too much weight on relative performance at DE events. At a Pueblo lapping day last year, I was able to tag onto the back of a 997tt for many laps in my Evo. I won't say it was skill, but perhaps more willingness on my part to move up the risk curve. On the same day, an E36 M3 with suspension mods was outpacing me even though my Evo was significantly faster on the straights.
I don't put too much weight on relative performance at DE events. At a Pueblo lapping day last year, I was able to tag onto the back of a 997tt for many laps in my Evo. I won't say it was skill, but perhaps more willingness on my part to move up the risk curve. On the same day, an E36 M3 with suspension mods was outpacing me even though my Evo was significantly faster on the straights.
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The supercharged ZR1 will still have the altitude disadvantage. There isn't a way for the supercharger to compensate for the lower atmospheric pressure the way a turbo can.
The turbo wastegate won't actuate until the maximum absolute pressure is attained.
Atmospheric Pressure + Boost Pressure = Absolute Pressure
For example, if atmospheric pressure is 2psi lower at altitude, the turbocharger boosts 2psi higher to achieve the same absolute pressure. Of course, there are limits to boost pressure increases due to the design of the turbocharger. There's a point at which the turbocharger will be making more heat than boost.
Superchargers have no similar way to compensate for the lower atmospheric pressure. There's no way supercharger boost can be increased on the fly. As such, the supercharged motor suffers from lower atmospheric pressure in a similar way to a normally aspirated motor. You just can't swap to higher boost pulleys on the fly to compensate for changing atmospheric conditions.
The turbo wastegate won't actuate until the maximum absolute pressure is attained.
Atmospheric Pressure + Boost Pressure = Absolute Pressure
For example, if atmospheric pressure is 2psi lower at altitude, the turbocharger boosts 2psi higher to achieve the same absolute pressure. Of course, there are limits to boost pressure increases due to the design of the turbocharger. There's a point at which the turbocharger will be making more heat than boost.
Superchargers have no similar way to compensate for the lower atmospheric pressure. There's no way supercharger boost can be increased on the fly. As such, the supercharged motor suffers from lower atmospheric pressure in a similar way to a normally aspirated motor. You just can't swap to higher boost pulleys on the fly to compensate for changing atmospheric conditions.
very true. The correction factors for supercharged and turbo cars are different at this altitude. The supercharged car is in between NA and turbo in loss at altitude. And the higher the pressure the turbos run the more efficient and less loss they have. that is why EVO's and STI's on very high boost do well up at this altitude. a 996tt running 1.1-1.3 bar isn't as efficient as an EVO running 1.6+ bar. Similarly a built NA engine will loose less power than a stock low compression engine at this altitude. High compression and cams makes a difference as well.
However, the ZR1 has so much power that I doubt there is much that will overtake it even at this altitude at least not from the factory.
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Driver is the biggest factor at the track. The C6 Z06 is a somewhat challenging car, when it comes to pushing the performance envelope.
I don't put too much weight on relative performance at DE events. At a Pueblo lapping day last year, I was able to tag onto the back of a 997tt for many laps in my Evo. I won't say it was skill, but perhaps more willingness on my part to move up the risk curve. On the same day, an E36 M3 with suspension mods was outpacing me even though my Evo was significantly faster on the straights.
I don't put too much weight on relative performance at DE events. At a Pueblo lapping day last year, I was able to tag onto the back of a 997tt for many laps in my Evo. I won't say it was skill, but perhaps more willingness on my part to move up the risk curve. On the same day, an E36 M3 with suspension mods was outpacing me even though my Evo was significantly faster on the straights.
Do you run with NASA? See you at the April event at HPR?
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I haven't done a track event since July. I traded my Evo for an E55 AMG. The E55 won't be much fun on the track, but I'm thinking of buying something cheap and fun to scratch that track itch.
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I dunno, I had my cousin's husband's 2003 E55 AMG terrorizing the streets of Chicago this past fall....granted it won't be much "proper" track fun, but I think it'd be fun to swing that car around the corners with the tires smokin!
We need to get them on board for our drives.
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