C13 exhaust manifold leaks, pdi?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by ClineER, Jul 26, 2019.

  1. ClineER

    ClineER Light Load Member

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    Apr 27, 2016
    N.E. Oklahoma
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    I have been fighting leaking slips joints for a while and about determined to replace the manifold. The slips joints are fairly loose where it slides together. I was curious if anyone has ran the pdi exhaust manifold on a Cat C13. What are your thoughts? Any leaks? Any better performance? Is it worth 1400?
     
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  3. tnevin225

    tnevin225 Road Train Member

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    I would say that if your changing it out anyway I would do one, It will help it breathe better. Most guys also upgrade the turbo along with the manifold, might also look at the Fleet Air Filters and I think you will get that Cat perked rite up.
     
  4. tnevin225

    tnevin225 Road Train Member

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    Wondering if you have open exhaust or just stock mufflers, If there stock you might look at a flow through that still muffles the noise but lets the air flow better.
     
  5. ClineER

    ClineER Light Load Member

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    Apr 27, 2016
    N.E. Oklahoma
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    Performance is good except lag, which I think is part of manifold slip leak. I have the 500hp and stock dual mufflers with cats removed, just a few baffles left. Egts are fine and can pull 60psi boost on hard pull. Just need a final solution for factory manifold leak.
     
  6. DL550CAT

    DL550CAT Road Train Member

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    Waynesburg, Pa
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    Never put a factory cat manifold back on. If it's me and I take a manifold of for any reason it gets aftermarket. I've always used PDI but would not be against the other one (bulley dog/everyone else). Not sure if the C13 used exhaust sleaves is do get PDIs stainless one piece.
     
  7. rollin coal

    rollin coal Road Train Member

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    TN
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    I had a performance diesel inc manifold on a C15 and think it was worth the money not to breathe exhaust fumes in the cab. It won't leak anymore for sure and after about 8 years running it never did. The stock one is junk.
     
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