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Thread: DIY: Turbo the EJ25D

  1. #211
    SLi Resident 86bratman's Avatar
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    Re: DIY: Turbo the EJ25D

    Make sure they're 97-99 heads, the 96s combustion chamber is wider than the ej22 bore.
    My 1997 Legacy L

    Fuelly

  2. #212
    t3h ub3r m3mber Garrison's Avatar
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    Re: DIY: Turbo the EJ25D

    I just read through your parts list, you won't be able to run the under-manifold turbo inlet. The ej25d manifold isn't raised high enough to get the pipe underneath. You will have to make your own.

    May i recommend http://www.siliconeintakes.com ?
    They're who I used to build my intake, and their customer service is top notch
    I've been to boost and back again my friends... and it was good

  3. #213
    t3h ub3r m3mber lord flashheart's Avatar
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    Re: DIY: Turbo the EJ25D

    Quote Originally Posted by 86bratman
    I've always thought they were as well. I remember the old arguments all over nasioc saying the 251 heads flowed better because the engine had more mid range torque than the 25d. nobody gave any credit to the higher compression or ecu tuning differences between the two.
    Word.
    the problem with the 251 heads is the shortside radius. They dont have one lol.
    the 25D has a couple draw backs like the shrouding around the valves in the combustion chamber. But if you unshroud them a bit you would be amazed at the flow increase. i honestly think if someone was willing to pay me to build a 25D the right way i could hit 240chp N/A. But unfortunatly all my customers want to build 251s instead.
    No, no ,no I'm not insulting you, I'm describing you!

  4. #214
    SLi Resident 86bratman's Avatar
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    Re: DIY: Turbo the EJ25D

    I believe we should have a chat sometime.
    My 1997 Legacy L

    Fuelly

  5. #215
    "FNG" KristjanJohann's Avatar
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    Re: DIY: Turbo the EJ25D

    I have a problem with what to do with my breather lines, crank case/PCV, IACV and valve cover breathers! I've already connected them into my custom intake but the car is smoking alot of oil and I'm getting oil in my intercooler
    Subaru Leone '86
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  6. #216
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    Re: DIY: Turbo the EJ25D

    I just read this, I'd be interested in turboing my 99 Outback with EJ25D, 4EAT. I replaced head gaskets with FelPro late last year.

    Without engine management, and stock fueling other than pump, I'm seeing 7psi as reasonable. Is this correct? Additionally, an Ebay WRX header/uppipe like this: http://www.ebay.com/itm/STAINLESS-MANIF ... c1&vxp=mtr should clear my water pump.

    Is all of this correct?

  7. #217
    SLi O.G. anothernord's Avatar
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    Re: DIY: Turbo the EJ25D

    The lower the safer but 7 is about the limit for the stock injectors.

    Yep, that header looks fine. Same one as I used to run with the stock water pump.

    As far as breathers:

    IACV needs it's own line. Crank and valve cover technically be plumbed to separate ports on the intake, but the car will run with them teed together.

  8. #218
    SLi nOOb BDAlex95's Avatar
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    Quote Originally Posted by anothernord View Post
    As far as breathers:

    IACV needs it's own line. Crank and valve cover technically be plumbed to separate ports on the intake, but the car will run with them teed together.
    Sorry to bring up a dead thread, I just finished building my hybrid with a vf11 on it and I'm having idling issues. You said that the IACV needs it's own line to the intake, but in your picture it looks like you've got all the lines tee'd into each other. I have all the lines tee'd into each other and kept getting a CEL for the IAC. Should I try and reroute my lines to have the IACV seperate from the PCV and crank vent? I can get a picture of my routing later if that would help.
    My greatest feat with my car is the constant willingness to keep it on the road for no apparent reward.
    98 BD 2.5GT EJ22DET(Aiming for the 300hp club!)
    89 S13 240SX KA24E(Blown)

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