1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

QUestions about temp and pressure

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Old 05-18-2010, 09:48 AM
Levi Miller's Avatar
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Default QUestions about temp and pressure

ok i have a set of guages in my truck and i was just wondering if my truck was running about the same as yours my turbo is waste gated and my boost guage hits about 19psi and runs about 11 or 12 my egts stay at about 8 or 900 maxxes out at 1200 my oil pressure is pretty high i think i run about 55 to 65 just kinda deppends on the day ony day i ran 80 pounds of oil pressure and idk how butt this might be normal and my water temp is spot on i know that i would just like to know what some of yall other first gen goys trucks are running thanks
 
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Old 05-19-2010, 07:11 PM
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my oil pressure runs 60-65 i think thats pretty normal. your boost might be right if youve never messed with the wastegate. but you should be able to get much more boost out of it
 
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Old 05-19-2010, 07:16 PM
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Old 05-20-2010, 09:29 AM
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ok how would i go about doing that cuzz i really dont have a clue as to what to do
 
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Old 05-20-2010, 10:24 AM
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my boost has peaked at 29psi going up monument pass in colorado and on the same pass same day my egts peaked at 900 and my truck was starting to get hot at the top of the pass i was going 75 with a load of about 3000lbs tho usually if im flooring it down the hyway with or without a load i do about 10psi and my egts are always at 550, i dont have a oil presure gauge that reads psi i just got the stock dodge one but it always stays in the middle unless im idleing then it goes to the low normal line, your boost seems pretty normal but your egts concern me a little bit ive never even got close to 1200 ru intercooled

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also what turbo ru runing cause i just have the original 1993 holset 45mm i think
 

Last edited by 1993firstgennewbie; 05-20-2010 at 10:24 AM. Reason: Automerged Doublepost
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Old 05-20-2010, 06:01 PM
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ya im intercooled and running an m&h m3 fuel pin with a tuned injector pump and some big mudding tires my friends truck is a 97 and he runs 700 to 750 just goin down the high way and i miss typed in my thread i dont run 8 or 900 thats crazy man i run about 600 to 650

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i just ordered a 60mm though and a cold air intake

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butt my stock turbo is waste gated to sorry i forgot
 

Last edited by Levi Miller; 05-20-2010 at 06:01 PM. Reason: Automerged Doublepost
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Old 05-21-2010, 10:21 AM
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Levi,
Are you getting FULL throttle ? I mean the throttle is hitting the IP when it's floored.

If not - back out the high idle screw until the throttle lever can hit the IP.
I was going over 30 w/stock sticks and turbo once I corrected this. And how far is your IP turned up? I also had my IP at 1/4 turn down from runaway.

Remember - - -
Fuel = Boost = HP = Higher EGT's
 
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