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  1. #76
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    Click here to enlarge Originally Posted by BavarianBullet Click here to enlarge
    Hate to be the bad guy but did @VargasTurboTech notice the post on 4/23/13 on n54tech where it was discovered that the N55 turbo is an "R" (spins backwards from normal)? RB said that could be a nail in the coffin, at least for EFR parts. Any comments?
    There's a LOT of cars with reverse rotation turbos. I think the EVO had this at some point.

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    There are a few. But I can honestly say I'd never modified one, just have seen and read bout them on other Mits platforms (ie. TD04L-R, etc). Not rocket science, they just spin opposite direction. There are routes to consider, hopefully Tony can have something for you guys shortly. Personally I've not been in much of a rush with the N55 as it is much less demand and I get ran ragged with the N54.

    Tony if at all interested I may have about 4 N55 cores for you, if I go the full upgrade path will not need any of it. I'm aware of some of the vendors and processes for making custom wheels, just feel that it could also be more hassle than what it is worth in the long run and a slight up charge for a full twin scroll setup would be appeasing to the masses as well.

    Rob

    Click here to enlarge Originally Posted by Sered Click here to enlarge
    There's a LOT of cars with reverse rotation turbos. I think the EVO had this at some point.

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    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    The turbine wheel, compressor wheel combo I have chosen is proven to make 600 WHP on other platforms, in this platform as I stated I see it supporting 500-550 WHP. Things are looking bright for the N55...Click here to enlarge
    This might be a silly question, but does anyone know if the N55 will be able to support this kind of power? I know with RBs + Meth, people were in the low 500 WHP range on the N54, but I don't think I've seen any N55's even break 450 WHP (with a normal baseline).
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  4. #79
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    Click here to enlarge Originally Posted by benzy89 Click here to enlarge
    This might be a silly question, but does anyone know if the N55 will be able to support this kind of power? I know with RBs + Meth, people were in the low 500 WHP range on the N54, but I don't think I've seen any N55's even break 450 WHP (with a normal baseline).
    I think you answered your own question. But that being said I am 100% confident the motor the can handle 500 WHP

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    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    Of course we know its reverse rotation, they are becoming more and popular in modern engines due to space constraints. All this means for me is having my wheels manufactured in reverse rotation, something we have done on other platforms already. As far as nail on the coffin for EFR. Yes and no, I'll leave it at that.
    I'm sorry would you elaborate on EFR?

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  6. #81
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    Click here to enlarge Originally Posted by benzy89 Click here to enlarge
    This might be a silly question, but does anyone know if the N55 will be able to support this kind of power? I know with RBs + Meth, people were in the low 500 WHP range on the N54, but I don't think I've seen any N55's even break 450 WHP (with a normal baseline).
    Other than the N55 turbo being net smaller vs N54, most of the airflow parts (heads/valves/cams) appear similar or even better than the N54. The N55 exhaust manifold looks a bit cramped at the turn into the turbo but how much that ultimately affects things...I guess we'll see soon enough.

    Good luck Tony!

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    If Tony pulls this off I'd be tempted to get an X3...

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    Click here to enlarge Originally Posted by BavarianBullet Click here to enlarge
    Other than the N55 turbo being net smaller vs N54, most of the airflow parts (heads/valves/cams) appear similar or even better than the N54.
    But that doesn't address the integrity of the internals. Only 1 way to find out though
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    If Tony pulls this off I'd be tempted to get an X3...
    LOL I was thinking the same thing.

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    I'm sorry would you elaborate on EFR?
    Robs plan and the correct one (ours at first as well) was to take an EFR CHRA and adapt it to the N55 housings. As soon as our core arrived that was scraped and we changed gears because of the Reverse rotation. I am actually happier with the route we have taken now over the EFR. So what I meant by yes and no was, EFR CHRA into stock housings, No, building a full manifold for the EFR, changing downpipes, intake piping, and charge piping, basically a stage 3 or ST kit for the N55 yes its still possible. Although expect ST or Stage 3 similar prices for that route.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    If Tony pulls this off I'd be tempted to get an X3...
    There is no if, it will be done and it wont be that long until we are testing. I am told my wheels are a couple weeks out. Then final machine work, get car here, figure out line adaptations, and tune.

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    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    There is no if, it will be done and it wont be that long until we are testing. I am told my wheels are a couple weeks out. Then final machine work, get car here, figure out line adaptations, and tune.
    Absolutely awesome.

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    Click here to enlarge Originally Posted by Sered Click here to enlarge
    There's a LOT of cars with reverse rotation turbos. I think the EVO had this at some point.
    I can name 4 of the top of my head with many many more coming out. Neon SRT-4, N55, F10 M5, Ford EcoBoost V6. They do it on most V Twins, or on singles where they want to tuck the manifold close to the block and still have the exhaust and intakes facing the right way.

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    So you think we're looking at an end of Summer release? I'm guessing with XI involved, I wont be getting much more than 460-500ish..
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    Is this the only option you're working on right now? a ST/ST3 kit? I assume from yours and Rob's remarks there will be no stock frame, $2-3k upgrade available for the N55? If not, I guess I'm getting an N54 Click here to enlarge

    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    Robs plan and the correct one (ours at first as well) was to take an EFR CHRA and adapt it to the N55 housings. As soon as our core arrived that was scraped and we changed gears because of the Reverse rotation. I am actually happier with the route we have taken now over the EFR. So what I meant by yes and no was, EFR CHRA into stock housings, No, building a full manifold for the EFR, changing downpipes, intake piping, and charge piping, basically a stage 3 or ST kit for the N55 yes its still possible. Although expect ST or Stage 3 similar prices for that route.
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    Click here to enlarge Originally Posted by bigdnno98 Click here to enlarge
    Is this the only option you're working on right now? a ST/ST3 kit? I assume from yours and Rob's remarks there will be no stock frame, $2-3k upgrade available for the N55? If not, I guess I'm getting an N54 Click here to enlarge
    I think you totally misunderstood, Sticky asked me to explain why yes or no on the EFR only. Our N55 upgrade is a stage 2 style upgrade in that it uses the stock compressor and turbine housings with a new CHRA, with our own reverse wheels. It will come in somewhere around the 3 grand mark. Rob has said he will might do a full manifold etc. We will eventually offer a full kit for the N55 similar to a ST or Stage 3 style set up once the platform matures a bit to get it past the 600 WHP mark.

  17. #92
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    I see. $3k for a stage 2 style upgrade that will do 500-550HP. OK got it.

    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    I think you totally misunderstood, Sticky asked me to explain why yes or no on the EFR only. Our N55 upgrade is a stage 2 style upgrade in that it uses the stock compressor and turbine housings with a new CHRA, with our own reverse wheels. It will come in somewhere around the 3 grand mark. Rob has said he will might do a full manifold etc. We will eventually offer a full kit for the N55 similar to a ST or Stage 3 style set up once the platform matures a bit to get it past the 600 WHP mark.
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  18. #93
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    Click here to enlarge Originally Posted by bigdnno98 Click here to enlarge
    I see. $3k for a stage 2 style upgrade that will do 500-550HP. OK got it.
    Around 3K, not 3K. I do not know what pricing will be yet. But having all the parts made for it is driving the price up on my end, also the CHRA we are using is Dual BB and they cost a pretty penny. We will see where we end up. Once we get a full sample done.

  19. #94
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    Thanks for the info Tony. I'm still torn between the N54 and N55. I can get a great deal on a 2011 135i MSport 6MT with NAV.

    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    Around 3K, not 3K. I do not know what pricing will be yet. But having all the parts made for it is driving the price up on my end, also the CHRA we are using is Dual BB and they cost a pretty penny. We will see where we end up. Once we get a full sample done.
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  20. #95
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    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    I think you totally misunderstood, Sticky asked me to explain why yes or no on the EFR only.
    Yep!

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    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    We will eventually offer a full kit for the N55 similar to a ST or Stage 3 style set up once the platform matures a bit to get it past the 600 WHP mark.
    You think it will do over 600 whp?

    The question becomes what do the automatic guys do though?

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    Click here to enlarge Originally Posted by bigdnno98 Click here to enlarge
    Thanks for the info Tony. I'm still torn between the N54 and N55. I can get a great deal on a 2011 135i MSport 6MT with NAV.
    Or you could get a 2008 N54 and go straight to Stage 3 twins with the monies saved!

    Progress for both platforms is looking great though, and seems like the N55 won't have to wait as long as the N54 did to blossom.
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    Inducer/Exducer specs on that wheel?
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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by BavarianBullet Click here to enlarge
    Other than the N55 turbo being net smaller vs N54, most of the airflow parts (heads/valves/cams) appear similar or even better than the N54. The N55 exhaust manifold looks a bit cramped at the turn into the turbo but how much that ultimately affects things...
    The N55 intake valves are 1mm larger and valvetronic (which no one has really tuned yet) will add flexibility. The N55 will flow marginally better, at least until the exhaust manifold.

    The original N55 exhaust manifold will become a problem at some point just like on the N54. I don't know about the injectors, although the N54 is the only turbocharged BMW engine to use the piezo electric injectors, I believe.

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    Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
    Inducer/Exducer specs on that wheel?
    I wont be releasing these. They are custom wheels, and I am trying to keep most of the specs to ourselves.

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