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

I got at 99 ram 2500 4x4 with a completely rebuilt 12 valve with mods. I blew my phat shaft 66mm turbo and had it rebuilt and machined to an 68mm. I put the turbo back on and ran the truck normal. It ran good ... JOIN NOW TO REMOVE TRACER

12 valve knock

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Old 05-20-2013, 12:12 AM
Cummins325's Avatar
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Default 12 valve knock

I got at 99 ram 2500 4x4 with a completely rebuilt 12 valve with mods. I blew my phat shaft 66mm turbo and had it rebuilt and machined to an 68mm. I put the turbo back on and ran the truck normal. It ran good all day then out of nowhere I hear a knocking noise and can't figure out what it is. I checked the oil and its good and don't see any leaks. Any ideas???
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Old 05-20-2013, 12:32 AM
97cummins's Avatar
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needs two turbos

   
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It could be the lift pump starting to go out. They will start to tick.

97cummins's Sig:htt 3 piece exhaust manifold, banks twin ram air intake
turbo silencer ring mia/ Zombie soldier cold air intake
3000 rpm governor spring kit, #10 fuel plate
3 gauge pod setup, 4'' exhaust turbo back,into duels
Star wheel all the way forward, tranny 3/4 swith/and lockup switch
Dunrite tripple disc torque convertor, Heavy duty valve body
16 degrees timing, arp head studs, trans. Cooler,
60# intake and exhaust valve springs
pac brake exhaust brake
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Old 05-20-2013, 01:33 PM
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It's not really a ticking sound more of a knocking or tapping

---AutoMerged DoublePost---

The tapping/knocking doesn't go with the idle of the motor

Last edited by Cummins325; 05-20-2013 at 01:33 PM.. Reason: Automerged Doublepost
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Old 05-21-2013, 03:49 AM
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needs two turbos

   
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ok,my bad
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Old 05-21-2013, 03:33 PM
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" it only makes 500 hp hes not gonna do well"

   
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check your valve lash

94 12valve's Sig:Dave
94 Dodge home built 2.6" puller The Green Machine
97 Dodge S362/GT4718R, 12mm ppump, 5x.016's, built auto
06 Dodge CR stock

Video of my last Pull
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