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  1. #1
    Nonstop, all day, everyday. 01xdime's Avatar
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    Constructive TURBO TALK

    I've been toying with some turbo ideas but i still can't nail down the best turbocharger. I've heard the Garrett GT28R come up more than once but what trim? Obviously the idea is to find the best balance between boost/cfm in order to achieve top power and small amounts of lag. I thought about a T3/T4 but there's so many variations. Definitly need something watercooled and ball bearing though. Anyone have any thoughts?


  2. #2

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    Yea the GT28 comes with the kit, but no one seems to know if it's a GR28R, GT28RS, or GT2871R. By my calc's the 2871 seems to fit best of the 3.

    Why do you think it needs to be ball bearing and water cooled?

  3. #3
    EZ Dock of Long Island Shibby1485's Avatar
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    i think probably a chitload of turbos will WORK, just a matter of optimizing, and i guess that's everyones secret. sure a GT28 or 2871 or 28RS may be what's used... so u got one part figured out, now you got a handful of compressor trims and turbine trims to figure out

    understandably so i guess? ... i mean someone that decided to be real hardcore about it obviously found a turbo, made it fit, and probably spent alot of cash swapping all different combinations of compressor and turbine wheels eventually landing the best overall setup for reasonable/minimal lag and good top speed and HP capabilities.

    there's alot of people building their own turbos right now, alot of people that have built them already all around the world in 4-tecs, and alot of them have all used a different turbo... so that shows that within reason you can get close to a comparable turbo and make big power and make it work reliably.... just a matter of finding that sweet spot perfect combination of a complete turbo setup

    i guess computer programs and equations can only go so far as to representing real world performance and off the bat giving you the best possible turbo specs

  4. #4

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    I managed to cook up somethin' good for my car. (see sig)

    If this whole RXP thing goes the same direction as the car world, you'll see about 2/3 of the folks buying kits and the other 1/3 building their own. Both will perform well.

    Mike
    Last edited by Shibby1485; 12-04-2007 at 02:26 PM.

  5. #5
    AKA "The Guppy" JeffTurbo601's Avatar
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    I have found in the past that most of the Mitsubishi turbos are watercooled so you may be able to find 1 in thier arsenal that may work. They make many diffrent trims and A/R housings that work well and spool very quickly.

  6. #6

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    I'll be the first to admit I don't know alot about turbo's, but, a turbo that's fully spooled by 5000 rpm doesn't sound like it's matched to the application. And then being dependent on a relief valve sounds Polish to me.

    And what that might do to the usability of the powerband sounds questionable. I assume it would make the ski respond like an electric motor? For drag racing it would be OK, but if you have to feather the throttle it would make it hard to handle.

  7. #7
    EZ Dock of Long Island Shibby1485's Avatar
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    aright u know what... if you dont have anything constructive to say or any contributions u're posts will be deleted from here on in. If your ski is a closed book and your input is biased, take a hike at the bear minimum from this thread.

    This site has always been about improving the 4-tec platform, sharing what we learn, and being open to new people and new ideas and new ways of doing things. If your mentality is that of only supporting one way or hit the highway, and criticizing others in the process, then i'll personally make it my goal to delete your responses everytime you post something negatively in this thread (for now).

    thanks for everyone's understanding.

    now please, continue the tech talk and brainstorming and let's continue to make existing things BETTER

    personally, i'm sick and tired of the attitude around here, and people only supporting one way of doing things and knocking down other people that they dont know from a hole in the wall. I've watched some very very VERY talented people make posts that are IN THE KNOW and they have VERY good projects currently under way and I continue to watch people with no clue sport their two cents and say something to someone that they are taking for an idiot.

    always know your company, know who those are around you, bc many are far smarter and far more capable and i'm sick of those smart capable individuals being driven away from the site
    Last edited by Shibby1485; 12-04-2007 at 01:04 PM.

  8. #8
    ctriverguy's Avatar
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    I have never installed a turbo, or for that matter any type of forced induction set up. However, just based on recent events, it seems clear, and correct me if I'm wrong, that a base turbo, BOV,and wastegate, can be had for under 2000. How do these parts differ from Auto applications to marine? (I like the fact there are a few kits, but the engineer in me says i can make my own and may want to take a crack at it.)

    There seems to be no hard data of reliability nor detailed specs on this stuff. And I agree with the last guy, this stuff is really interesting, and if i could see some real "stuff" (reliability and performance) on this, I'll be in line to purchase these items I "as soon as my wallet allows". But right now the only two people who have showed anything dont have skis runnning right (reid) or dialed in properly (jerry). (And I don't blame the race guys for not sharing.)

    Maybe its because Turbos are so new to this? but then how long has honda had a turbo in their ski? And if boost is boost, why cant you just speak to a tech at garrett or another mfg explaining your application and go from there? What am i missing?

    Dont be an E-thug, let the ski's do the talking.

  9. #9
    xxx2's Avatar
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  10. #10

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    Here's a turbo set up I want
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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