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boost= how much hp

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Old Dec 23, 2003 | 01:02 AM
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From: Mesquite, TX
Default boost= how much hp

For each psi of boost how much hp do you gain on our motors? For instance how much hp would you gain on 4 psi?
I may have stumbled across on an idea that can cram 5-6psi into my truck for around $100. I've asked around to a few mechanics and they have said that they know of people that have done this particular rigged set-up and liked it. Please don't bash Even though I have posted this idea before many of you said it was stupid and was as dumb as the electric superchargers, although I'm willing to try anything to get more hp at little cost. Its the infamous Smog pump supercharger idea, as I have said before I have asked a few mechanics and they have said that it can actually work if you just figure out how to rig them up. From what I'm told they only cost about $5.00 each from a local junk yard so what could it hurt.(need about 4-5 of them for about 6psi of boost I think, they are only about a few inches wide and a few inches in length, so I could link them together then make a metal or plastic cover to go over them so it looks like there is nothing done, Then run the "boost" host to the intake) II think it will be fun just to rig this up, I figure I'll just give it a whirl, it'll be sweet it it works! If it works I'll be sure to get some pics and specs on how I did it. Wish me luck.
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Old Dec 23, 2003 | 01:26 AM
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It's actually an exponential rate. Once you get around 5 psi I think it's around 20hp per pound. The initial 5 may yield 35% increase maybe ?????

I won't comment on the idea, since you know most of the opinions already. The belt pattern would be hidious if you had 5 of them to route through ....
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Old Dec 23, 2003 | 09:49 AM
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One problem you'll have - 5psi boost at 1500 rpms is a lot less air flow that at 5500 rpms. IF you can get 5 psi down low, its very likely that you'll actually be restricted and have vacuum pressure at 5000 rpms.

For this idea to work, you'll hve to be able to feed 5 psi at 5000 rpms and have a waste gate system like a turbo for anything under that to keep the boost pressure down. If you can make 5 psi at 5000 rpms, you'll be a milionaire by this time next christmas.
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Old Dec 23, 2003 | 10:26 AM
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"The juice isn't worth the squeeze" on this one. Try to figure out how you are going to mount 6 smog pumps(!) on the front of an engine! That would be a custom bracketry nightmare! Then fabricate the tubing, the inlets, (which are downright puny) find a 400" serpentive belt, etc.

I would also find out what those pumps are rated at. "x" amount of cfm @ "y" pressure. Every pump has an efficiency rating and optimal range for operation. I sincerely doubt this contraption would do what you wanted it to.

That's a poor idea.
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