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Thread: which turbo would you go with GT42R OR borg s300

  1. 10-24-2009, 03:59 PM #1
    getherdone
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    Default which turbo would you go with GT42R OR borg s300

    Let me know what you guys think . i know the gt42 is like 1200 more but i heard there almost the same.
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  2. 10-24-2009, 04:33 PM #2
    Master Shake
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    what are your power goals? cause those things are capable of support like 1k hp.
    MY CIVIC
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  3. 10-24-2009, 04:34 PM #3
    crashtke
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    I love the Bullseye Borg Warners and they are what I designed my rotated kit around for the Subarus. The spool is faster than comparable garretts and they can put out some serious power. What whp are you shooting for?
    ---Mike
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  4. 10-24-2009, 05:12 PM #4
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    hp goals are around 650 to 700
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  5. 10-24-2009, 05:33 PM #5
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    What car/motor is it? I would guess the Bullseye S366 would get you to those goals. Just give them a call. David is great. I used to use another company that sold the Borg warner stuff and I will never switch. Bullseye has been great and really taken care of me. Customer service is top notch and they will stand behind their products.
    ---Mike
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  6. 10-24-2009, 05:40 PM #6
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    Quote Originally Posted by crashtke View Post
    What car/motor is it? I would guess the Bullseye S366 would get you to those goals. Just give them a call. David is great. I used to use another company that sold the Borg warner stuff and I will never switch. Bullseye has been great and really taken care of me. Customer service is top notch and they will stand behind their products.
    built gsr
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  7. 10-24-2009, 05:49 PM #7
    crashtke
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    1.8 liter motor though? Or are you swapping something in?
    ---Mike
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  8. 10-24-2009, 06:15 PM #8
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    1.8
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  9. 10-24-2009, 07:09 PM #9
    crashtke
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    The way I calculate it either the 372 or the 374 running a PR of 3.8 and ramping up as you go towards redline. That should put you in the meat of the compressor map. But I would ask David at Bullseye. He has been working with these turbos longer than I have and may have actually put one on a 1.8 in that hp range before.
    ---Mike
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  10. 10-24-2009, 07:11 PM #10
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    Quote Originally Posted by crashtke View Post
    The way I calculate it either the 372 or the 374 running a PR of 3.8 and ramping up as you go towards redline. That should put you in the meat of the compressor map. But I would ask David at Bullseye. He has been working with these turbos longer than I have and may have actually put one on a 1.8 in that hp range before.
    well i got the gt42r now and the guy said it had a gt35r hot side. so i was wondering if its gonna be a waste of time to use it
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  11. 10-24-2009, 07:13 PM #11
    B18c1Turboed
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    MY old 42r on gsr motor...
    Attached Thumbnails Attached Thumbnails -turbo2-jpg   -turbo1-jpg  

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  12. 10-24-2009, 07:21 PM #12
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    S372 on a honda dyno

    http://www.bullseyepower.com/testdata/td_JasonHunt.asp
    ---Mike
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  13. 10-24-2009, 07:25 PM #13
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    Quote Originally Posted by getherdone View Post
    well i got the gt42r now and the guy said it had a gt35r hot side. so i was wondering if its gonna be a waste of time to use it
    What AR is the housing? If it is a standard t3 housing you are limited to around 700-750 max and that is pushing it to the limits. I honestly would switch to a t4 housing and open it up.
    ---Mike
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  14. 10-24-2009, 07:33 PM #14
    B18c1Turboed
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    Quote Originally Posted by crashtke View Post
    What AR is the housing? If it is a standard t3 housing you are limited to around 700-750 max and that is pushing it to the limits. I honestly would switch to a t4 housing and open it up.
    Depends on what the use of the car will be... If its a street driven car, keep it the way it is. If not time too upgrade it...

    I love my s372 turbo. It made amazing power at low boost here my last year dyno chart on the gt42r turbo , was about 38psi
    Attached Thumbnails Attached Thumbnails -new-pics-108-jpg  

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  15. 10-24-2009, 08:10 PM #15
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    ^^^for some reason i ant see the dyno chart
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  16. 10-24-2009, 08:11 PM #16
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    Quote Originally Posted by crashtke View Post
    What AR is the housing? If it is a standard t3 housing you are limited to around 700-750 max and that is pushing it to the limits. I honestly would switch to a t4 housing and open it up.
    the cold side says a/r.60 hot side says a/r .70
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  17. 10-24-2009, 09:19 PM #17
    crashtke
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    .70 would be a great street turbo, and should make 600's I would think.

    On the chart above what is the red run vs the blue one? And why the breakages in the chart?
    ---Mike
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