Forced Induction Superchargers | Turbochargers | Intercoolers

how much timing to run

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Old Oct 11, 2004 | 11:14 PM
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From: logan utah
Default how much timing to run

i am just wondering how much timing to to run in my car i run at 13psi. i seen you tell someone to run 14 but they are running less boost. any help would be apreciated thanks.
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Old Oct 11, 2004 | 11:49 PM
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uh...we need to know engine size, compression, FI type turbo//supercharger, octane gas, forged bottom end...etc...etc...
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Old Oct 12, 2004 | 10:42 PM
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it is a 97 vortec 350 with eldelbrock multiport fuel injection forged wisco piston polished rods. eldelbrock vtec aluminim heads 8.5 to 1 compression 91 octane gas twin to4b garret turbos. dual 3 inch exhaust vortec fmu. i think that is about it.
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Old Oct 12, 2004 | 10:55 PM
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i would say 18-22

im running 20 with 8:8 and 93 octane
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Old Oct 12, 2004 | 11:23 PM
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i just detonated a piston about a weak ago from to much timing it was about 33 i think. oh i forgot i have a lunati roller cam i cant remember the lift and duration right off hand i will look and get it tommaro. but i think it has 512 lift 112 lobe 232 240@50 but not sure. thanks for the help.
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Old Oct 12, 2004 | 11:27 PM
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18-22..play it safe, unless u like rebuilds
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Old Oct 12, 2004 | 11:33 PM
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rebuilds suck i had to rebuild it three times this year the first time turbos spiked at 30psi and filled the cylander with water. the next time i was still running kieth black pistons and they dont like boost. then this last time but i have all winter i read that it should be about 14 but that just seemed a little low.
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Old Oct 12, 2004 | 11:36 PM
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start at 14 and work your way up is a good way.


and as always...after the rebuild..pour in a whole tank of RACE GAS..just in case of boost spikes...etc
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Old Oct 13, 2004 | 09:56 PM
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thanks for the info i will try it when i get it back together. i put it away for the winter and am ordering a cromeoly crossmember for it.
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