Air intake temperatures with a cup/drilled airbox versus a stock airbox.
09-19-2006, 10:38 AM
#76
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Originally Posted by Geoffrey
I really can only say what I've seen on the dyno myself which has been a stock bluprinted Cup engine. My opinion is that the power improvement on a stock C2/C4 engine would be similar, in the 2-4hp range.
FWIW, I had orginally asked the dyno question tongue-in-cheek as, at that time, there was a lot of debate about the value of dyno's and their variability.
Marc
09-19-2006, 10:46 AM
#77
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Originally Posted by gr8330
Some of us old hot rodder guys added a section to the fuel line that was coiled and placed it into a 5 lb coffee can than added dry ice before a run.
Noah
09-19-2006, 11:17 AM
#78
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"If the a/c cooling the intake air did produce more power gain that it consumed then we could create an ever larger a/c system producing ever more power . . . and end up with perpetual motion!"
A blower takes hp to spin , but gives back more hp than it takes .
I put a heater on the block and a cooler on the fuel tank ?
A blower takes hp to spin , but gives back more hp than it takes .
I put a heater on the block and a cooler on the fuel tank ?
05-25-2009, 08:03 AM
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Some of you might remember this thread from a few years ago..."Performace Enhancement Study - II"
A bit of the data (HP has not been corrected for gearing used on dyno)
Here are the plots for today's runs. I will show stock and one of the drilled airbox runs and then a plot with all three.
Porsche specifications are as follows:
SAE max power: 247 HP @6100 RPM
SAE max Torque: 228 ft-lbs @4800 RPM
The data are summarized as follows:
1991 964 Carrera 2 (July 1990 build date)
Ambient temp: 48 deg F
Barometric pressure: 30.27 in. steady
Humidity: 81%
Run 1: Stock configuration
SAE max power: 229.5 HP @6100 RPM
SAE max torque: 217.1 ft-lbs @ 4700 RPM
Run 2: Drilled airbox
SAE max power: 227.6 HP @5750 RPM
SAE max torque: 216.5 ft-lbs @4800 RPM
Run 3: Drilled airbox (plotted with the preceding two runs)
SAE max power: 228.9 HP @6200 RPM
SAE max torque: 214.0 ft-lbs @4800 RPM
Under these conditions and an otherwise stock 964....basically, the same numbers....
A bit of the data (HP has not been corrected for gearing used on dyno)
Here are the plots for today's runs. I will show stock and one of the drilled airbox runs and then a plot with all three.
Porsche specifications are as follows:
SAE max power: 247 HP @6100 RPM
SAE max Torque: 228 ft-lbs @4800 RPM
The data are summarized as follows:
1991 964 Carrera 2 (July 1990 build date)
Ambient temp: 48 deg F
Barometric pressure: 30.27 in. steady
Humidity: 81%
Run 1: Stock configuration
SAE max power: 229.5 HP @6100 RPM
SAE max torque: 217.1 ft-lbs @ 4700 RPM
Run 2: Drilled airbox
SAE max power: 227.6 HP @5750 RPM
SAE max torque: 216.5 ft-lbs @4800 RPM
Run 3: Drilled airbox (plotted with the preceding two runs)
SAE max power: 228.9 HP @6200 RPM
SAE max torque: 214.0 ft-lbs @4800 RPM
Under these conditions and an otherwise stock 964....basically, the same numbers....
04-08-2010, 06:15 PM
#81
Burning Brakes
I did this same test several years ago on my 993, which was easier to do with the OBD-2 reader hooked up to a laptop.
Here is the link to the page
http://p-car.com/diy/intake/
Here is the link to the page
http://p-car.com/diy/intake/
04-08-2010, 06:27 PM
#82
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04-08-2010, 09:54 PM
#83
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Out of cursiosity, has anyone ever mounted a pod filter to the underside of the spoiler in some fashion with a flex pipe insted of fixed pipe to the engine so it gets the coolest air possible?
There is also an upturned pipe offered through maxspeed that positions the mouth of the intake directly under the spoiler which is being discussed in another thread on this page. The concern obviously was what to do when it rains and your intake fills with water!
There is also an upturned pipe offered through maxspeed that positions the mouth of the intake directly under the spoiler which is being discussed in another thread on this page. The concern obviously was what to do when it rains and your intake fills with water!
04-13-2010, 12:48 PM
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Where can one purchase an intake as shown at http://p-car.com/diy/intake/ for the 964? I've only seen the carbon fiber one so far.
06-07-2010, 08:15 AM
#87
Burning Brakes
From the looks of things turning the current snorkel would place the intake under, or partially under the side of the engine compartment and restrict the airflow. Don't have my car at the moment so I can't check for sure and I can't say whether or not the fitting would allow a 90 degree swap anyway.
06-07-2010, 01:14 PM
#88
06-07-2010, 01:27 PM
#89
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Where can one purchase an intake as shown at http://p-car.com/diy/intake/ for the 964? I've only seen the carbon fiber one so far.
Porsche put this airbox and snorkel on Robert Linton's car, that tells you something.
