[ba] RE: [s-cars] 80tq Update: 516 wheel hp, 450 wheel TQ
JShadzi at aol.com
JShadzi at aol.com
Sat Mar 5 20:49:24 EST 2005
Exactly, I have a 2001 A4 1.8t for a "normal, torquey power curve" that satisfies that part of my appetite ;)
>I totally agree. It's neat to get data points like this, i.e. waaay outside
>the normal limits :)
> -----Original Message-----
> From: JShadzi at aol.com [mailto:JShadzi at aol.com]
> Sent: Thursday, March 03, 2005 12:16 AM
> To: calvinlc at earthlink.net; s-car-list at audifans.com; quattro at audifans.com;
>ba-group at audifans.com
> Subject: Re: [s-cars] 80tq Update: 516 wheel hp, 450 wheel TQ
> Hey Calvin,
> I do believe this to be an accurate measurement of Torque and HP, granted
>there is the whole "dyno accuracy to flywheel extrapolation" issue, but that
>withstanding, this is an accurate measurement of TQ to HP.
> The reality is that there is just no way to force this much air through a
>2.3l motor at low RPM. There are realities that dictate what the power band
>will look like, realistically this motor needs solid lifters, cams and a
>redline of 9krpm.
> This isn't an attempt to build a real streetable, torquey motor, this is
>an experiment in pushing limits. If and when the time comes that I get
>really serious about "driving" this car, I will put back in the 034EFI HO
>hybrid and make this power curve:
> Also, don't be deceived by how much power this motor is really making, 300
>HP and TQ at 5100rpm, the power increases dramatically and makes the rest of
>the curve look small, but calculate the sheer amount of power under this
>curve, and its easy to understand how blisteringly fast this car is, even
>with a low redline of 7500rpm. A shift out of 500 wheel HP puts you back
>into 300+ wheel HP, even with the stock gearing.
> Regardless, I want to emphasize that this isn't a project for TQ and low
>rpm street driving, I hope to continue to push the limits of how much air
>can be forced through this motor.
> In a message dated 3/2/2005 10:52:51 P.M. Pacific Standard Time,
>calvinlc at earthlink.net writes:
> Well this is definitely pretty impressive but I am wondering if that
> really depicts reality, i.e. 2 times as much torque at 5600 rpm vs. 4700
> and a "redline" of 7500 then you would need a tight ratio tranny to take
> advantage of all of it and you would be doing alot of shifting. This
> like the perfect engine to mate to a CVT. Cruise at 3300 rpm on the
> and when the throttle gets mashed spin to 5600 rpm and just hold it
> while the tranny adjusts the gearing. That would be pretty exciting!
> Also, I am wondering if you have done any comparisons with the other
> cars around here that aren't quite as "peaky" but also don't put out as
> peak power power, is the area under the curve approximately the same
> 3500 rpm on?
> Definitely the highest numbers I have seen from an I-5 without factory
> backing, as far as peaks go.
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