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  1. #1
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    Which turbo for road racing?

    After tens of thousands of street and road race course miles on my 1M with a MOTIV 750 using a FP HTA3586r w/ .82 AR, it's time for me to consider replacing the turbo.

    I'm now planning to run 93 pump with DI only and priorities are reliability, spool and transient response. My whp goals are modest -- 525-550 on 93 pump (and perhaps a bit more with 40-50% E85 mix) will do me fine.

    The car will be used almost exclusively on road race courses and I'll definitely be keeping my single turbo MOTIV manifold.

    Thinking about either a FP HTA3076r or XR7164. The HTA3076r will spool up fast 'cause of its 54.8mm compressor inducer, but will give it up on the top end. The Xona 7164 (which is comparable to a HTA3582) may hit the sweet spot.

    I'm figuring on .82 AR on either, but could be convinced to go smaller for quicker response if it wouldn't sacrifice too much top end.

    Comments greatly appreciated!

    Neil

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    Burger Motorsports
    Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

    It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.

  3. #3
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    Yep, worth considering. Sure wish Forced Performance published compressor maps so I could compare the HTA to the GTX.

    Thanks.

    Neil

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    Click here to enlarge Originally Posted by MDORPHN Click here to enlarge
    Yep, worth considering. Sure wish Forced Performance published compressor maps so I could compare the HTA to the GTX.

    Thanks.

    Neil
    Eh, honestly you can't even compare them to Garrett. Those are all third parties saying they did this and that, I don't believe it. Garrett GTX or Borg Warner EFR, since you can't fit the EFR I'd just stick to the GTX and be done. It will last forever too.
    Burger Motorsports
    Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

    It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.

  5. #5
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    A might concerned that the GTX3076r might be hard pressed to make 500+ safely if limited to 93 pump though it undoubtedly would spool up fast!

    Thinking about something just a bit larger, say GTX3576r, GTX3582r, XR7164 or XR7865.

    Further thoughts?

    Neil

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    3076 will be your best choice, may be even 3071 gen2

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    Does anyone know how much power folks are getting out of the GTX3076r running 93 pump with only DI?

    Neil
    (currently leaning toward slightly larger GTX3576r, XR7164 or XR7865)

  8. #8
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    Click here to enlarge Originally Posted by MDORPHN Click here to enlarge
    Does anyone know how much power folks are getting out of the GTX3076r running 93 pump with only DI?

    Neil
    (currently leaning toward slightly larger GTX3576r, XR7164 or XR7865)
    I'm sure with custom tuning like you will have should yield at least 500whp on 93.
    Burger Motorsports
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    It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.

  9. #9
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    I'd do the GTX3576.
    More efficient, won't need as much boost, will respond lightning fast still and have power to redline. It's also always worth calling Garrett directly and asking what they'd advise based on your goals, use, displacement, etc... They know better than anyone.

  10. #10
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    1 out of 1 members liked this post. Yes Reputation No
    Thanks. In fact, I'm now focusing on the Gen 2 Garrett GTX3576 (your suggestion) and the GTX3582.

    Neil

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