| A quick how to on forced induction. Assuming that timing and fuel delivery are in line, the power a turbo or super charger generates is almost straight line proportional to the amount of air they are forcing in. However to preasurize the incoming charge causes it to heat up thus effectivly limiting the amount you could stuff in. Crunch it too much and it will burn in the manifolds. And remember that while a supercharger can generate 2-300 HP it also takes about 100 or so to run it depending on the setup. What that means is it is always leaching off the available power. Turbos rely on exhaust gas to sping them up and while they don't leach off of engine power they require a low static compression which means when you're not spinnign them the engine is a boat ancor.
So when you see the Dinan figures giving only 50BHp at the wheels it dosen't seem like all that much but when you think of 50 extra BHp across the whole powerband thats pretty nice.
Friend of mine works for Garrett and he's got a turbocharged 302 in a heavy chevelle. These engines in NA form were real high winders, 3500-7500 with a 4500 cruise. With the twin turbo setup he's able to make an extra 150-200 but the system dosen't spin them up fully until he's pulling about 6k. Why? because he'd kill the mill using the boost lower down the curve. Same logic applies with Dinan; any giving relative Hp boost could be dialed in but things get stupid fast if you overpower a car. How many of us have seen the usual 5.0 owner who has worked that poor pony to the hilt for somehting scarry like 400hp and no matter how hard they try it drives like hammered snot. Too snotty hook up going straight, too twitchy to turn and about all it does is cruise the strip boiling the hides at stoplights. Thats not real fun, trust me I've been there.
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Francis Taracido
Panzer Division Racing
Haus der Flugpanzer
(Oo=[][]=oO)
Autobahnpolizeilandstraße Patrouille Verfolgung speziell | 
12-11-2001, 11:13 AM
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