Si PRL Motorsports Type-R Turbo Swapped 1.5T Civic Si

  1. 17siturb0

    17siturb0 Senior Member

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    323hp 348tq on pump gas, 360hp 397tq on E85 blend?
     
  2. kshawn

    kshawn Senior Member

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    :pickme:
     
  3. OP
    OP
    PRL Motorsports

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    So here we have it... :headbang:

    Type%20R%20Turbo%20Swap_zpsegxqmy13.jpg

    326 hp & 305 tq on 93 octane pump gas and 342 hp & 319 tq on e30 blend fuel. We were very impressed with the pump gas power!

    Type%20R%20Turbo%20vs_zps4nrxvivl.jpg

    Here is an e30 blend comparison of the stock turbo vs the Type-R turbo. Obviously with the larger turbo comes more turbo lag, about 1000 RPM worth. However, the engine now pulls to redline and peaks near 7000 RPM instead of 5200 RPM. The Type-R turbo softened the bottom-end torque spike significantly and made 20 ft/lbs less peak torque than the stock turbo. This powerband looks much safer on the stock motor/connecting rods. ;)

    @KTuner and @VitViper worked their magic on the VTC tables to make this setup work properly and pull to redline. We managed to hold ~29 PSI all the way to redline, unlike the Type-R 2.0T 's engine and turbo setup that starts dropping boost pressure up top. This just goes to show how well the small displacement 1.5L breathes with a larger turbo/turbine. The next obstacle to overcome is fueling, as we have now maxed out the factory fuel system.
     
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  4. 360glitch

    360glitch Moderator
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    :yes:


    Great results! I am curious though, with more fuel could you get more out of this particular setup?
     
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  5. kshawn

    kshawn Senior Member

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    29psi :respect: was this on factory internals? I'm assuming this was a SI as well.
     
  6. KTuner

    KTuner Senior Member
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    Fantastic results!
     
  7. OP
    OP
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    yes
     
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  8. 2CAMS

    2CAMS Senior Member

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    this cant be safe for this little 1.5 is it? also is this plug and play?
     
  9. LilToTo17

    LilToTo17 Senior Member

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    This Type R turbo swap was just for testing only.
     
  10. davemarco

    davemarco Senior Member

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    If the upcoming big turbo kit is based on this, then I would be interested in understanding whether internals would be required to be safe, and what the target cost would be.

    I've been holding fire on my purchases of the current PRL lineup in the hopes of maximizing my power/$ investment.
     
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  11. kshawn

    kshawn Senior Member

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    Same
     
  12. OP
    OP
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    Any kit we finalize will utilize our cobra cold air intake and front mount intercooler kit, along with the front pipe.
     
  13. kshawn

    kshawn Senior Member

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    Any chance a water/meth kit would help with the fuel limitation? Untill possible upgraded fuel system options come out.
     
  14. Moltisanti

    Moltisanti Member

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    Learn about turbocharging. Psi is irrelevant. It’s about power and torque.
     
  15. kshawn

    kshawn Senior Member

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    I wouldn't say it's irrelevant.. but 29 at 7000rpm is easier on the engine then the same at 4-5k. Torque brakes things and with boost down low you make alot more tq. Move the boost up in the high range and you'll make more hp/power. That being said, to much boost and it dosnt matter where you're making it.

    Seeing 29psi on factory internals,on a 1.5 consumer Honda engine, is impressive in my mind. Even with it being moved to the high rpms, vs our rod bending stock turbo.
     
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