which is the cheapest way to get 260whp?
07-10-2010, 10:15 PM
#21
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The most simple solution is a used greddy turbo kit. Use stock exhaust, cat, and everything needed to keep the car carb legal u have ur 260 reliable hp.
I just saw you need it for nasa. I say screw the power adders all together and use things that will increase your cornering speed like brakes, coilovers, sway bars, weight reduction ( take out the soft top and that wall between the driver and the trunk), roll cage, and wheels
I just saw you need it for nasa. I say screw the power adders all together and use things that will increase your cornering speed like brakes, coilovers, sway bars, weight reduction ( take out the soft top and that wall between the driver and the trunk), roll cage, and wheels
07-12-2010, 01:59 AM
#22
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Make a list of modifications, prioritize them by $ to mass/power or handling/traction.
Practice, Practice, Practice
1. Get on the track and get a coach
2. Autocross
3. Learn your cars limits
Most important is wieght reduction, lower mass means
1. Faster acceleration
2. Better handling
3. Faster breaking
Traction
1. Argueably better acceleration with more tire to the ground
2. Better handling
3. Faster breaking
Handling (Springs first)
1. Lower center of gravity better handling
2. Stiffer springs less body roll
Power
1. Faster acceleration
Practice, Practice, Practice
1. Get on the track and get a coach
2. Autocross
3. Learn your cars limits
Most important is wieght reduction, lower mass means
1. Faster acceleration
2. Better handling
3. Faster breaking
Traction
1. Argueably better acceleration with more tire to the ground
2. Better handling
3. Faster breaking
Handling (Springs first)
1. Lower center of gravity better handling
2. Stiffer springs less body roll
Power
1. Faster acceleration
07-12-2010, 02:26 AM
#23
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260 NA horsepower at the wheels is basically impossible. You'll be able to get 260 at the clutch, but never at the wheels, and you'll be spinning 10k+.
So if you really need that kind of power, you'll have to go forced induction.
So if you really need that kind of power, you'll have to go forced induction.
07-12-2010, 04:14 AM
#26
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Originally Posted by Dschultz,Jul 12 2010, 05:59 AM
Make a list of modifications, prioritize them by $ to mass/power or handling/traction.
Practice, Practice, Practice
1. Get on the track and get a coach
2. Autocross
3. Learn your cars limits
Most important is wieght reduction, lower mass means
1. Faster acceleration
2. Better handling
3. Faster breaking
Traction
1. Argueably better acceleration with more tire to the ground
2. Better handling
3. Faster breaking
Handling (Springs first)
1. Lower center of gravity better handling
2. Stiffer springs less body roll
Power
1. Faster acceleration
Practice, Practice, Practice
1. Get on the track and get a coach
2. Autocross
3. Learn your cars limits
Most important is wieght reduction, lower mass means
1. Faster acceleration
2. Better handling
3. Faster breaking
Traction
1. Argueably better acceleration with more tire to the ground
2. Better handling
3. Faster breaking
Handling (Springs first)
1. Lower center of gravity better handling
2. Stiffer springs less body roll
Power
1. Faster acceleration
From personal experience aerodynamics is a big effect, adding a rear wing got 4 seconds off a 2:30 lap at my local track. I'm estimating from my datalogs that +80 to 90 hp (bolt on supercharger) would only get 2 seconds. Of course this would be track configuration dependant.
If you know all this already and power is the final piece to the puzzle, the best way to maximize the rules is a turbo that fully spools early and cap the boost at whatever gets the required hp. Not just peak hp but the max hp over all the RPM range you'll be driving at. Just like a WRC rally car. NA at that power level is going to be $10K-$15K for a "reliable" road race engine. Don't get the extreme stroker kit, it will not last and is essentially a drag race engine setup.
07-12-2010, 07:49 AM
#29
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the problem hitting numbers NA with the f2xC motors is the lack of a good cam.
250 "shouldnt" be too hard.
I hope to hit 240 this week when i hit the dyno, i'm still on the stock intake manifold, throttle body and cams. There are 20-30hp locked up in those 3 things easy.
I did all the work myself and probably have $3000 in my setup so far, Including all the boltons.
add ~700 for a good intake manifold, ~150 for a throttle body and ~600 for some cams... $5G's should do it so long as you can build a motor and do all the work yourself.
250 "shouldnt" be too hard.
I hope to hit 240 this week when i hit the dyno, i'm still on the stock intake manifold, throttle body and cams. There are 20-30hp locked up in those 3 things easy.
I did all the work myself and probably have $3000 in my setup so far, Including all the boltons.
add ~700 for a good intake manifold, ~150 for a throttle body and ~600 for some cams... $5G's should do it so long as you can build a motor and do all the work yourself.
