Procharger D1SC 10-11 Psi Dyno Results 600whp - Cherokee SRT8 Forum
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post #1 of 69 (permalink) Old 01-27-2013, 07:45 PM Thread Starter
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Procharger D1SC 10-11 Psi Dyno Results 600whp

held 10-11 psi in 3rd gear.
AWD
93 octane only

any idea why power drops so much? belts slip, crank pulley slip?




Last edited by mfedorov; 01-27-2013 at 08:01 PM.
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post #2 of 69 (permalink) Old 01-27-2013, 07:48 PM
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Wow nice man! i just posted this video in one of my thread, was trying to see who's jeep it was.

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post #3 of 69 (permalink) Old 01-27-2013, 07:55 PM
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Procharger D1SC 10-11 Psi Dyno Results 600whp

Pretty nice man!!!


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post #4 of 69 (permalink) Old 01-27-2013, 07:56 PM
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Procharger D1SC 10-11 Psi Dyno Results 600whp

Niceee!!!!!!


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post #5 of 69 (permalink) Old 01-27-2013, 08:25 PM
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Quote:
Originally Posted by mfedorov View Post
held 10-11 psi in 3rd gear.
AWD
93 octane only

any idea why power drops so much? belts slip, crank pulley slip?



SRT8 Jeep 600whp procharged PSI PROformance dyno - YouTube
Nice bro!!! One sick Jeep you got there!!! Yeah something looks off on it and it could be belt slippage.... You see any signs of black rubber in the engine bay? What pulley you running now on the blower? Still the 3.2" or did you go to a 3.0? What does your AFR and look like in this run?

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post #6 of 69 (permalink) Old 01-27-2013, 09:32 PM
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If it held 10-11 psi, then I wouldn't think belt slip, unless you were expecting more boost.

If it is an 11lb pulley setup for your motor combo, then you're just making the boost you're supposed to. Get a graph with boost reference and see if it climbs and falls or if it climbs and holds steady.

With centri blowers you'll see more boost with rpm, but realistically your graph looks normal-ish. Your torque plateaus before your HP peaks, which implies that you were still making power with RPM gain. Should it make power past 5500 rpm? That depends on the rest of the setup, I have no idea what cam you're running.

If the boost fell off, that would explain it, but steady 10-11 psi doesn't mean that it fell off at 5500rpm. If you were making 11psi at 5500 and 10psi at 6000, that still doesn't explain the 50jp loss.
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post #7 of 69 (permalink) Old 01-28-2013, 02:38 AM
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nice run, graph does look funky and 600 seems low for 11 psi...

maybe your jeep is pulling timing do to kr*?

what is your fuel pressure sitting at?

if it where me i would invest in some methanol injection for some added safety


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post #8 of 69 (permalink) Old 01-28-2013, 07:34 AM
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Nice numbers bro!!

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post #9 of 69 (permalink) Old 01-28-2013, 07:35 AM
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Hey Max, earlier you said you were making about 12-13 psi on the street right?

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post #10 of 69 (permalink) Old 01-28-2013, 07:42 AM Thread Starter
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Yes, about 12PSI on non-coated pulley and regular NAPA belt from what I could tell. But those were street runs and it was much warmer if that makes a difference.
I wonder if it's crank pulley slipping...
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