12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

timing=more power?

Old Dec 1, 2010 | 12:31 AM
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Default timing=more power?

ok this is a dumb question but does timing make my truck run better,smoother, or just more power or all of it. i know dont go past 16* on stock head bolts and etc.
 
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Old Dec 1, 2010 | 07:16 AM
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it'll run smoother, cooler egt's, better fuel mileage, quicker spool up,
n i may have this screwed up but i think it causes higher cylinder pressures (hence blown head gaskets) and lower drive pressures.
i have mine at 16.5* with stock gaskets n head bolts
 
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Old Dec 1, 2010 | 09:10 AM
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My buddy has his at 18* on stock bolts and gaskets and hasnt had a problem yet. Its only been that way about a month though. He definately gets better gas mileage, and very noticable difference in power.
 
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Old Dec 1, 2010 | 11:30 AM
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Originally Posted by cummins95
it'll run smoother, cooler egt's, better fuel mileage, quicker spool up,
n i may have this screwed up but i think it causes higher cylinder pressures (hence blown head gaskets) and lower drive pressures.
i have mine at 16.5* with stock gaskets n head bolts
yes your cylinder pressure does increase with more timing, as for turbo spool when your timing goes up less energy is actually sent to the turbo charger so it would spool slightly slower. dout you could ever feel it going from stock to 15* or 16*
 
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Old Dec 1, 2010 | 04:31 PM
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Originally Posted by 94 12valve
yes your cylinder pressure does increase with more timing, as for turbo spool when your timing goes up less energy is actually sent to the turbo charger so it would spool slightly slower. dout you could ever feel it going from stock to 15* or 16*
there ya go, he's prolly forgotten more about these trucks than i've ever known
 
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Old Dec 1, 2010 | 07:12 PM
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I just set mine from the stock 14* to 16* a few weeks ago I should have done this years ago It does run much better
 
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Old Dec 1, 2010 | 09:23 PM
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not trying to thread steal, but i really really don't wanna take mine to a shop to have her set. i know i could physically do it, but never doing it before and it being my daily driver has kept me from it. i would love if someone in my area could show me hands on how to adjust timing correctly, this way i could adjust the timing myself later as more modifications call for it.
 
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Old Dec 1, 2010 | 11:10 PM
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thanks for the info id like better fuel mileage for sure and how much does it round about cost to have it
 
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Old Dec 2, 2010 | 05:18 AM
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i bought the tools n did it myself. i think they cost me like 180. n its really easy to do
 
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Old Dec 2, 2010 | 05:23 AM
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sounds good guess were huntin unless u got work im bout to head to the stand wish me luck on the 600 pointer
 
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