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  1. #101
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    Click here to enlarge Originally Posted by JBacon335 Click here to enlarge
    I can only imagine they will be similar to the Hydra performance turbos
    Similar yes (just like a couple of the other similar options) just without the many ball drops each.

  2. #102
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    Click here to enlarge Originally Posted by Rob@RBTurbo Click here to enlarge
    just without the many ball drops each.
    What am I missing? The Hydra dude making some early mistakes?

  3. #103
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    What am I missing? The Hydra dude making some early mistakes?
    I thought they were very well designed. I'm curious as to what the ball drop is with them as well

  4. #104
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    2 out of 2 members liked this post. Yes Reputation No
    The Hydra setup went in a lot of right directions and in fact it is my favorite to date, but it added a couple wrong turns especially if turbos ordered for the N54 head (while the N53 head custom manifold looks very nice). The biggest problem is the re-use of the OE manifold, secondary to that is the 12-blade turbine, lastly is some internal machining quirks in these turbine housings. NOTE: The wastegates that are included with these housings are pretty poor in design as well.

    While the OE manifold is a very high quality piece (and thus we can see why it is desirable to use), the throat size is a great mismatch for the new housing and that is a large kicker. While it is a GREAT match for the OE turbine housing flow wise and extremely high quality of course, that is about where the buck stops. This is unfortunate as the housing Hydra is using is the first we have seen to actually be a well designed, high flow, and an overall very high quality piece. On another note the manifold that is native to this housing is not quite all perfect either, it will need to have some internal CNC machining to get it worthwhile of usage. But once these custom efforts are complete it will be a nice piece and of course a well matched one at that, this is the proper route of action IMO.

    Regarding the internal turbine housing machining you guys would poop yourselves if we showed pictures of the atrociousness of some of the others, unfortunately when you are not machining your own stuff you tend to miss some of these gotchas in life. This one is not quite up to par but it is the best one we've seen in this regard, certainly a large step in the right direction.

    Lastly the OE 12-blade turbine casting, while it works and we used it for years as well in the classic RBs for example, there are just much better flowing castings available these days. We understand this was the choice as it was felt to be of highest quality and also a common "fault", but unfortunately metallurgical issues and/or other turbine quality issues is not why these turbines in some of these turbo offerings have been failing. In these cases the vendor responsible just hasn't figured out why yet, or refuses to accept the true reasons; and meanwhile keeps fiddling around with materials an casting designs hoping for an easy cure.

    When it comes to internals and balancing, we have no idea the choices there but hopefully it is all done top flight.

    All in all picking between these setups to date has been like choosing between hemorrhoids or ulcers, unfortunately it just has come down to which is done the best out of a field of poor options. The plan is to change all of that around.

    Rob

  5. #105
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    Well I got a set of the 650s which I thought were a pretty good match of components for wanting 500whp reliably. I'm putting them on next month when I have spring break off of work from the vocational school. I'll let everyone know how they work out especially long term as this is my daily driver.

  6. #106
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    Click here to enlarge Originally Posted by JBacon335 Click here to enlarge
    Well I got a set of the 650s which I thought were a pretty good match of components for wanting 500whp reliably. I'm putting them on next month when I have spring break off of work from the vocational school. I'll let everyone know how they work out especially long term as this is my daily driver.
    I think for your 500whp power goal, the OE manifold in itself is fine. I really do not think it becomes too restrictive until closer to 600whp, but unfortunately it definitely is not matched well in the throat area to your new turbine housings which creates a large outward step as the exhaust flow transitions from the manifold to the turbine housing inlet. Just a bad design idea, a take one step forward and then a step back sort of thing or as mentioned prior a ball drop of sorts.

    For your power goals something simple and well matched like our RB Twos would've been very well efficient, more affordable, offer better wastegates, and be quite a bit easier to install with the availability of standard style outlets. Not to mention, 100% proven, still not a hiccup with a single set of them now 17 months later.

    Rob

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