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C15 acert inframe

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by rydr, Dec 1, 2019.

Page 1 of 3
  1. Dec 1, 2019 #1
    rydr

    rydr Light Load Member

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    Currently having my sdp c15 rebuilt. doing 16:1 ipd low compression kit. head is going to machine shop monday. what studs or bolts do i need on the top end? ive heard of acert engines having issues with breaking studs and bolts in the head. i dont want to put it back together just to have stud issues in the future. what are the part numbers needed for the updated parts. also needing to get a good ecm tune if anyone can point me in the right direction. thanks
     
    rydr, Dec 1, 2019
    rydr, Dec 1, 2019
    #1
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  3. Dec 1, 2019 #2
    Shawn2130

    Shawn2130 Heavy Load Member

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    I’m here to learn as well...
     
    Shawn2130, Dec 1, 2019
    Shawn2130, Dec 1, 2019
    #2
  4. Dec 1, 2019 #3
    spsauerland

    spsauerland Road Train Member

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    West Harrison, In
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    What is your full S/N? SDP21692 and up have the improved VVA studs. I would replace all head bolts. If you can find a place to do it, cryogenic treated head bolts have shown to hold up better. Close inspection of block is a must especially where liners seat. If in doubt, have counterbore cut. Don't get crazy with setting liners @ top end of spec. Copy and pasted from Cat on a 3406 HG. Although the 6I3066 Cylinder Head Gasket is designed to seal the head to block joint throughout the allowable liner projection range, the optimum projection for the maximum sealability of both exhaust gas and fluids is 0.090 mm (.0035 in).
     
    spsauerland, Dec 1, 2019
    spsauerland, Dec 1, 2019
    #3
    dustinbrock, SAR, pushbroom and 4 others Thank this.
  5. Dec 1, 2019 #4
    rydr

    rydr Light Load Member

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    full engine s/n is SDP07312. intake side of the head and my cac is completely covered in soot, should i get the cac cleaned at a radiator shop. also going to need a new air compressor can i use the 6nz style air compressor?
     
    rydr, Dec 1, 2019
    rydr, Dec 1, 2019
    #4
  7. Dec 1, 2019 #5
    spsauerland

    spsauerland Road Train Member

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    Description of Change: An improved stud is used on the engines that are listed above. The new stud has an "elliptical fillet" underhead with "J" threads. The new stud has increased durability.

    Adaptable To: The 304-9553 Stud is a direct replacement for the 233-3672 Stud and the 288-4109 Special Stud. The improved stud is adaptable back to the first production of the listed engines. The change is effective at the factory with the engine serial numbers SDP21692-UP and NXS32162-UP.
     
    spsauerland, Dec 1, 2019
    spsauerland, Dec 1, 2019
    #5
    SAR, Oxbow, pushbroom and 3 others Thank this.
  8. Dec 1, 2019 #6
    Cat sdp

    Cat sdp . .

    19,882
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    How many miles/hours did you get out of it....?
     
    Cat sdp, Dec 1, 2019
    Cat sdp, Dec 1, 2019
    #6
    Oxbow Thanks this.
  9. Dec 1, 2019 #7
    rydr

    rydr Light Load Member

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    750k. im only taking it apart to convert it to single turbo with the low comp pistons. removing a few other parts aswell
     
    rydr, Dec 1, 2019
    rydr, Dec 1, 2019
    #7
    Oxbow and Cat sdp Thank this.
  10. Dec 8, 2019 #8
    rydr

    rydr Light Load Member

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    when going from 18:1 pistons to 16:1 low comp pistons should I also change the piston cooling nozzle to a cat 279-1152? also would anyone know of the part number for the big plug where the cgi cooler runs to the block?
     
    rydr, Dec 8, 2019
    rydr, Dec 8, 2019
    #8
  11. Dec 25, 2019 #9
    DieselTech_Aus

    DieselTech_Aus Light Load Member

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    stan
    original cooling jet is fine.

    standard rocker shaft studs are fine, just torque to spec.

    if you get the ECM tuned just get them to delete IVA, sharpen up response and adjust the need for boost before rack increase. don't stretch the pulse width and add lots of fuel. ideally it would be best to run a 6nz 70pin ECM and harness, fit 6nz cam sensor, boost sensor and a 988H/24M interal harness and re-pin to suit

    the 6nz compressor does fit. but you need the 6nz tru-flow750 gear and adapter plate to fit it. then the relative plumbing alterations.

    what do you mean by CGI cooler?
     
    DieselTech_Aus, Dec 25, 2019
    DieselTech_Aus, Dec 25, 2019
    #9
  12. Dec 25, 2019 #10
    rydr

    rydr Light Load Member

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    Jan 8, 2019
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    CGI is clean gas induction on SDP engines basically cats version of egr. under the exhaust manifold is a decent sized hole where coolant is supplied to the cgi cooler from the block between #2 and #3 cylinders. i kept with SDP style reman air compressor. maybe one day i will do a 6nz conversation
     
    rydr, Dec 25, 2019
    rydr, Dec 25, 2019
    #10
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