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HY/HX swap

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So I've come to my senses a bit thanks to @TFaoro and have decided that I need to cannibalize my fleet and throw the HX that's in my 99 into the 02 since that's the truck that's staying for the long haul. Now, with that being said, I do have some questions.

- Do I take out the entire thing?! (turbine & compressor housings n such?)

- I figure I should get a rebuild kit for the HX since I know it's never been done, anything else besides the basic kit DAP sells?

- Anything else I should look at changing or upgrading while I have it apart?

- Tyler I know you got yours all nice and polished when you did your rebuild, where/how did you do that?

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  • TFaoro
    TFaoro

    You guys are just over here doggin on my higher HP build 

  • CTcummins24V
    CTcummins24V

    You have to swap the entire turbo, it's not hard. NO mix/match parts. The HY and HX used different connections to attach to the center section and have different center sections. First pic is an

  • CSM
    CSM

    To be honest, there are times I wish it was all still stock aside from the fuel system upgrade and a small tuner like a edge or smarty.  Though, when I reflash my truck back to stock with a smarty it

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  • Author

Since I'm swapping the HX in place of the HY do I also need to swap the oil feed line and drain line or will they match up?

They matched up for me.

    • Like 1
    • Author

    Also, I just noticed on the tag that I have a HX35W and from my research I've done and the obvious, it just means the turbos waste-gated. I assume that this won't be an issue swapping since the HY is wasted-gated also and will/should already have things accommodated for the waste gate to be in there?

     

    The wastegate is self contained, so you shouldn't have any issues with the swap.

    You bet.

    • Author

    Awesome!

     

    I got a pair of gaskets for the exhaust manifold and oil return ordered today. Boost elbow should be here by the end of the week. Hoping to get it swapped soon. I'm also going to finally install my egt probe while the turbos off too. 

     

    Ive read most people seem to see 100-200* lower egt temps after installing the HX. Does that sound about right? Is it really moving that much more air?

    Most people that swap to a HX also increase the boost.  If you were to run both turbos at the same pressure I don't think there would be that large of a difference, though I've been wrong before.

     

    Despite popular belief, the HY exhaust flows better.

    Edited by Cowboy

    • Author

    You mean increase boost with a boost fooler or elbow? Or bigger injectors n things?

     

    I plan on bigger injectors and a quad after I get my trans upgraded

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