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Lower egts?

Posted

Just out here in a pinch truck is an 02 vp truck with a quadzilla and s366 just put new 100 horse injectors it it and before with just tuner and turbo it made about 36psi boost and wot on hot tune wouldn’t exceed 1150 degrees now with new stix towing small tractor on car hauler it breaks 1100 pulling small tractor in stock tune, wondering if theres a tune out there that would help solve the problem or anything i could do in meantime before it gets water meth kit! 

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  • Mopar1973Man
    Mopar1973Man

    Ok setup just don't go any bigger. You basically are more like 3.42 gears to the ground. Optimal is between 3.55 and 3.73 final to the ground. Im running 30 inch tires which is 3.69 gears to the groun

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You have a Quadzilla and you’re running it on level 1? Stock?  

  • Author

Yes after the injector swap it pulls harder on tune 2 then it did on 10

100's are not big enough for a 66.  

 

Who built the injectors?  A 366 is not a great turbo for a VP truck that tows.

  • Author

Right now like a 32 inch tire on stock dodge rims and 3:55 or something like that runs about 2000 rpm at 70, or i think any way thats what it showed in the glove compartment 

  • Owner

Ok setup just don't go any bigger. You basically are more like 3.42 gears to the ground. Optimal is between 3.55 and 3.73 final to the ground. Im running 30 inch tires which is 3.69 gears to the ground. Mighty quick tire, I can take on 4th and 5th gens and still outrun them.

    • Like 1
    • Author

    So an ideal gearing for me would be like 3:73 if i had say 33s?

    sure, but not the root issue.  Your root issue is a poor turbo for the application and to small of injectors.

     

    17 hours ago, Me78569 said:

     

    • Owner

    Like he said it doesn't help. But now as the ratio goes from 3.55 and lower towards 3.40 you start adding consider engine loads towing  heavy trailers and could possibly add a bunch to EGT's. Also keep in mind that for every 1 pound of rotational mass you ditch is equal to pulling 8 pounds off the frame. Bigger tires are adding that rotational mass. 

     

    6 minutes ago, Wesley said:

    So an ideal gearing for me would be like 3:73 if i had say 33s?

    That would get you back to 3.58 calc to the ground. 

     

    Like myself I've switch to 245/75 R16 tires that is a 30 inch tire. Towing even with +150 HP Injectors and Quadzilla on KILL I can hold road speeds of 65 MPH and climb 6% and 7% grades to Arizona without tipping 1,200*F. My RV is 8,500 GVWR and 31 foot long giving me a total of 62 feet long and about 17,300 GCW. 

    • +150 HP Injectors (7 x 0.010)
    • HX35/40 Turbo (60/60/12)
    • Quadzilla (My towing tune)
    • 245/75 R16 Tires
    • 3.55 Gears (4WD and solid axles)

    14.7 MPG MAX, 12.6 MPG AVG

    15915332979951430079351958718559.jpg

     

     

     

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    Welcome To Mopar1973Man.Com LLC

    We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.