02-24-2005, 11:03 AM | #1 |
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Boost Question
Ok let me say I have no idea about s/c's othger than how they work on a basic level. I have a few questions though.
1)How does your h/c/i setup effect the amount of boost you get from a s/c? For example, say you have a s/c that flows 1500 cfm at maximum output. Could not not possibly see more boost on a restrictive engine than your would on one that flowed monster numbers? Say would an s trim s/c make more boost on a stock motor than it would on one that was running afr 205's track heat intake and a monster cam? 2) Can more boost = less power and less boost = more power ? Just as above, the more boost it makes my thinking says the more power you would get out of the s/c alone. However, if you have more n/a power would that make up for a lack of boost from having the same s/c installed on a more free flowing engine? 3)Is it possible on a s/c'd motor, just like it is an n/a motor too have your internals flowing too much? I know stock internals would be a bottle kneck for a s/c but at what point does it go to far to the other end of the spectrum? Hope I phrased these where someone besides me can understand what I am trying to figure out |
02-24-2005, 12:19 PM | #2 | |||
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Re: Boost Question
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02-24-2005, 12:24 PM | #3 | |||
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Re: Boost Question
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One thing to remember is that compression ratio, intercoolers, heads, and intakes can affect boost #'s. Does that help any?
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02-24-2005, 12:57 PM | #4 |
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Re: Boost Question
Yes, a better flowing engine will make less boost and more power. Look at QWKSNKE's setup - the blower is pullied to make 20 psi, but only makes 14 - 15 on his engine. I'm pretty sure a stock motor with 20 psi wouldn't make that kind of power, either.
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02-24-2005, 02:23 PM | #5 |
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Re: Boost Question
Joker, you're on the right track. It's the reason compressor sizing is so critical to your engine. The first things I ask when someone wants a turbo and a certain power level is what their camshaft and heads are like. Then I ask if they have a good block.
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02-24-2005, 05:33 PM | #6 |
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Re: Boost Question
In the recent MM&FF (I think it was) they should the effect of adding in the intercooler, as I recall it cost them 3-4 PSI and around 50 hp (?) Don't have the magizine in front of me so I'm going off of memory.
As the others said to your ?'s you really need to match everything together.
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02-24-2005, 08:04 PM | #7 | |
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Re: Boost Question
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02-24-2005, 08:13 PM | #8 | |
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Re: Boost Question
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They had wanted to prove the point that 1) you loose boost because your adding more distance and resistance for the boosted air to go through, and that 2) Just by adding a air 2 air doesn't gain you anything unless you retune.
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