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SVTPerformance's Chain of Restaurants
The Blower Bistro
how much hp does 1lb of boost add?
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<blockquote data-quote="Taz" data-source="post: 2609148" data-attributes="member: 2127"><p>First, you'd want to know what the motor is good for without boost so you can see how well it responds to the F/I when you apply it. It doesn't freaking matter that you've built a low compression motor with blower cams, etc. It's called a baseline. (BTW, I'm sure that, being the expert you are, you KNOW low comp makes LESS HP per psi boost than high comp!)</p><p></p><p></p><p></p><p>Say, that's a really diplomatic manner of expressing yourself that you have there, Sparky. And let's just take a look who's ignorance is running all over this thread! That 25 psi line is the just about most IGNORANT statement I think I've ever heard about boost.</p><p></p><p>Lemme see ... supppose YOUR blower is most efficient at 25 psi boost on YOUR motor, which has an "X" cid displacement. Now put your blower on a motor that's got 2X displacement. Guess what. At the same RPM, your blower is still flowing the same CFM that it was on your motor, but now it's not producing anywhere NEAR 25 psi, IS IT??? So, is it still at its max efficiency AT THE LOWER BOOST, or do we need to spin it TWICE AS FAST to bring it up to 25 psi so that we can be back "in the zone" again? Moron.</p><p></p><p>I've got more friggin' compressor maps on my hard drive than you've ever seen! (YOu probably don't even know what a compressor map is.) Not a SINGLE ONE expresses any compressor's efficiency in terms of boost psi. It's ALWAYS in terms of rpm and cfm. And the cfm where you achieve max efficiency is going to result in different boost levels on different sized motors. Gee, ya think maybe that's why they make DIFFERENT SIZED blowers???</p><p></p><p>So You don't like my 7% rule of thumb, eh? And I obviously don't know what I'm talking about?</p><p></p><p>But you do ... because you're such an ... expert.</p><p></p><p>Go tell it to Kenne Bell, since that company is my source for this particular rule of thumb. It comes directly from a KB FAQ page. Hey, but what does KB know about F/I? The company has only been doing just that for decades, but obviously they don't have a clue what they're talking about. Maybe you're the one who needs to get a clue. Personally, I've adopted this little rule of thumb BECAUSE IT WORKS, Numb Nuts!</p><p></p><p></p><p></p><p>We're OBVIOUSLY not having the same conversation. You seem to SPEAK English fairly well, but you don't appear to comprehend it very well. I implied that you changed your BASELINE when you worked the motor by swapping the cams etc. I DIDN'T say you changed your boost level.</p><p></p><p>Let me make it real simple for you:</p><p></p><p>The 7% rule of thumb applies only up to about 10 psi, maybe 12.</p><p></p><p>Were YOU MAKING MORE boost than 10 - 12 psi???</p><p></p><p>Then, the rule of thumb does not apply in your case.</p><p></p><p>Was that so damned hard?</p><p></p><p>Tell you what, don't bother answering this post. You've already betrayed your ignorance with that ridiculous 25 psi BS. This dialogue is OVER! I initially tried to be civil to you, 'cause I felt bad for the way everybody dumped on you over in the New Edge Forum. But from now on, stay out of my sights.</p><p></p><p>T-</p></blockquote><p></p>
[QUOTE="Taz, post: 2609148, member: 2127"] First, you'd want to know what the motor is good for without boost so you can see how well it responds to the F/I when you apply it. It doesn't freaking matter that you've built a low compression motor with blower cams, etc. It's called a baseline. (BTW, I'm sure that, being the expert you are, you KNOW low comp makes LESS HP per psi boost than high comp!) Say, that's a really diplomatic manner of expressing yourself that you have there, Sparky. And let's just take a look who's ignorance is running all over this thread! That 25 psi line is the just about most IGNORANT statement I think I've ever heard about boost. Lemme see ... supppose YOUR blower is most efficient at 25 psi boost on YOUR motor, which has an "X" cid displacement. Now put your blower on a motor that's got 2X displacement. Guess what. At the same RPM, your blower is still flowing the same CFM that it was on your motor, but now it's not producing anywhere NEAR 25 psi, IS IT??? So, is it still at its max efficiency AT THE LOWER BOOST, or do we need to spin it TWICE AS FAST to bring it up to 25 psi so that we can be back "in the zone" again? Moron. I've got more friggin' compressor maps on my hard drive than you've ever seen! (YOu probably don't even know what a compressor map is.) Not a SINGLE ONE expresses any compressor's efficiency in terms of boost psi. It's ALWAYS in terms of rpm and cfm. And the cfm where you achieve max efficiency is going to result in different boost levels on different sized motors. Gee, ya think maybe that's why they make DIFFERENT SIZED blowers??? So You don't like my 7% rule of thumb, eh? And I obviously don't know what I'm talking about? But you do ... because you're such an ... expert. Go tell it to Kenne Bell, since that company is my source for this particular rule of thumb. It comes directly from a KB FAQ page. Hey, but what does KB know about F/I? The company has only been doing just that for decades, but obviously they don't have a clue what they're talking about. Maybe you're the one who needs to get a clue. Personally, I've adopted this little rule of thumb BECAUSE IT WORKS, Numb Nuts! We're OBVIOUSLY not having the same conversation. You seem to SPEAK English fairly well, but you don't appear to comprehend it very well. I implied that you changed your BASELINE when you worked the motor by swapping the cams etc. I DIDN'T say you changed your boost level. Let me make it real simple for you: The 7% rule of thumb applies only up to about 10 psi, maybe 12. Were YOU MAKING MORE boost than 10 - 12 psi??? Then, the rule of thumb does not apply in your case. Was that so damned hard? Tell you what, don't bother answering this post. You've already betrayed your ignorance with that ridiculous 25 psi BS. This dialogue is OVER! I initially tried to be civil to you, 'cause I felt bad for the way everybody dumped on you over in the New Edge Forum. But from now on, stay out of my sights. T- [/QUOTE]
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how much hp does 1lb of boost add?
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