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Quote:

Originally Posted by Dave@ddmworks

One thing to consider is that it is not the amount of boost that kills things in an engine. To give you an example a small GT2554 on the 2.4L @10psi is not the same as a GT3071 @10psi and that would not be equal to a MP62 flow @10psi either. Boost pressure is just a measurement of the restriction of flow through the engine that is why we see higher boost pressure with the supercharger on cars that have a restrictive exhaust, even though they make less power to the wheels. One of the things that bends things up inside the engine is cylinder pressures which also has a direct impact on how much torque the engine makes. The higher your cylinder pressure is after combustion the more force on the piston and the more transferred throught the rods to the crank and depending on the angle of the crank determines how much torque the engine produces. The biggest thing we need to find out is at what cylinder pressures do things in the engine start to get twisted .

So, are you saying that a boosted car benefits from a little "back-pressure"?

Jackknife

__________________
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DDM Supercharger #6 Stage II Intercooled
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Listen to 'er why-ee-eye-ine..

	Jackknife Member Join Date: Sep 2006 Location: Hot Springs Village, AR	Quote: Originally Posted by Dave@ddmworks One thing to consider is that it is not the amount of boost that kills things in an engine. To give you an example a small GT2554 on the 2.4L @10psi is not the same as a GT3071 @10psi and that would not be equal to a MP62 flow @10psi either. Boost pressure is just a measurement of the restriction of flow through the engine that is why we see higher boost pressure with the supercharger on cars that have a restrictive exhaust, even though they make less power to the wheels. One of the things that bends things up inside the engine is cylinder pressures which also has a direct impact on how much torque the engine makes. The higher your cylinder pressure is after combustion the more force on the piston and the more transferred throught the rods to the crank and depending on the angle of the crank determines how much torque the engine produces. The biggest thing we need to find out is at what cylinder pressures do things in the engine start to get twisted . So, are you saying that a boosted car benefits from a little "back-pressure"? Jackknife __________________ Deep, Ebony, Loaded...VIN 2124 DDM Supercharger #6 Stage II Intercooled Magnaflow Dual Cat-back ... Valentine 1 FE3 sway bar ... Car. Cust. Rests and Pockets Norm's Dual Rear Fascia ... Visor Decals Walnut Burl Dash ... Dual Horns Blacked-out Grills ... Debadged Boost & A/F gauges ... KappaShield DDM Pro-Beam and back brace Listen to 'er why-ee-eye-ine..