HP500 procharger..how much boost ?
08-02-2011, 07:01 AM
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HP500 procharger..how much boost ?
current setup, stock HP500 +.030, & lightning headers, procharger M3SC, prosystems custom blow thru carb, MSD digital 7 box w/timing retard and alcohol/water injection, remote intercooler...how much boost would you consider safe to run on 93 octane ? right now making 4psi @ 5200, thanks Rob
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08-02-2011, 08:54 PM
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What's your static compression, 8.5-8.75ish? 7 lbs is no problem with just the intercooler, with the Meth 10-12 would still be safe. They like a fair bit of timing even with decent boost, don't go too conservative with your boost retard.
08-02-2011, 09:40 PM
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I would say right around there....stock replacement J&E forged psitons, no head work and std .039 felpro marine gaskets..at the current 4 psi @ 5200 not using injection or timing retard. has a 5" blower pulley now...procharger says a 4.25 pulley will add 3-3.5 psi or a 4.13 4-4.5...so just trying to figure what works...
08-02-2011, 09:56 PM
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You should be able to run at least 7 lbs of boost, 30 degrees of timing & 93 octane. Make sure you have carb adjusted rich enough. What size intercooler are you running?
08-02-2011, 10:14 PM
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Procharger techs don't know $hit...........I run a 4.25 pulley, 454Mag (slightly worked) with the M1SC and I get 5+psi and I run 89 fuel....fair enough, MPI as opposed to N/A but, touch wood, I have had zero problems after some help from a couple of site members who know Procharger set ups inside out.....
As pointed out, keep your timing conservative and even 91 octane would be fine to run IMO.......
As pointed out, keep your timing conservative and even 91 octane would be fine to run IMO.......
08-03-2011, 08:46 PM
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Make sure your fuel pump can pump enough fuel and pressure. As your boost goes up your fuel pressure should also. If you run lean you will melt down the motor in very short order. If you do you may be lucky if you only melt a hole in a piston and not distroying the block or heads.
Don"t ask how I know.
Don"t ask how I know.
