Cat c15 Turbo upgrade

Discussion in 'Trucks [ Eighteen Wheelers ]' started by MSQUARED, May 10, 2021.

  1. MSQUARED

    MSQUARED Light Load Member

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    Yeah she seems to whine pretty good, dont think she has much whistle
    And first thing I'm replacing is the manifold to see if that helps cool the Pyro down, next step I'm upgrading turbo. And I want to check to make sure the IVAs have been backed off even tho it's deleted. I always get a check engine light that comes on but with no faults amd when it does I'm some what derated to about 21 or 22 lbs of boost
    And the surging happens when it's powering up amd seems like it's fighting for fuel or looking for more power and can't find it. Not shifting gears tho
     
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  3. DDguy

    DDguy Light Load Member

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    Have you checked if your wastegate is Hung Open or if you have boost leaks anywhere ? Also do you have a Turbo Part number or know hte specs of your current turbo ?
    Also At What rpm range are you working at and cruising At
    Have you dynoed to see what hp you are at ? or how do you know your at 600RWHP ?
     
    Ky Flash Thanks this.
  4. MSQUARED

    MSQUARED Light Load Member

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    Yes it was dynoed to get the rwhp, was 606 hp at 26 psi of boost. Dyno guy said boost issues and also said egt issues getting a little to warn to quick

    Turbo part number borg w 177148
     
  5. DDguy

    DDguy Light Load Member

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    Okay so you are at estimated 675-700 hp on fly wheel is that correct ?
     
  6. MSQUARED

    MSQUARED Light Load Member

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    I'd say 700-750 estimate yes, but I also wonder if I had proper boost on dyno would I have achieved a greater rwhp number?
     
  7. Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    That Turbo number are used for an upgrade on B model Cats. No wonder your creating to much heat quickly, way to small for what your looking to achieve. I ran what BW called a stage 1 Turbo when I had my Cat. It did the job for my application at that time. I ran 550 brakesaver file with 58’s injectors on a 5EK series. I was getting around 650/700 hp(Miss it, and you can thank Commiefornia for that).
    I’m surprised much others haven’t chimed in about your issue. Those SDP series are complicated.
     
    MSQUARED Thanks this.
  8. DDguy

    DDguy Light Load Member

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    Yes that will help You should be seeing 35-40 Psi for that hp level Low boost will account for High EGT forsure but theres alot more things that can cause high EGT as well but low boost is bad
     
  9. MSQUARED

    MSQUARED Light Load Member

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    Yeah I think I might have manifold leak aswell I have soot on the block under neath the manifold. According to the number on the manifold it's a full tilt but can't say much else was on truck when I got her
     
  10. DDguy

    DDguy Light Load Member

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    I am still wondering what RPM Range you mostly run at would it be 1200-1400 1400-1600 or 1600plus
     
  11. MSQUARED

    MSQUARED Light Load Member

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    I run 70 mph at 1500 or 65mph at 1400 so pretty much 1400-1500 range

    336 gears 24.5 lp rubber
     
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