Batmowheel exposed
Newbie
Joined: Apr 2008
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I believe Bill @ PHP also did some dyno runs between a batmo and a regular wheel, and that may have been on a powermax and he even went as far as trying different tuning out on each one (his own tunes) to try and maximize potential... the batmo ran hotter and made less power if memory serves.
Ryan, I'm with you, they were quite tempting.
I'd really like to see a billet wheel added to this and layed over the other two.
Ryan, I'm with you, they were quite tempting.
I'd really like to see a billet wheel added to this and layed over the other two.
Also, the test was done with a billet BW wheel. Here is a photo of the compressor wheels and covers used.
Haha Id email them Ryan
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Like I said the only thing I think I gained was spool up with the billet wheel
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Like I said the only thing I think I gained was spool up with the billet wheel
Last edited by Farmboy 2.0; Oct 17, 2012 at 03:44 PM. Reason: Automerged Doublepost
Newbie
Joined: Apr 2008
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Wow.. Thats great they are putting on a show. Lets see how the numbers come back.
Mdub, My thinking (mind you I'm not an engineer) is that there is some kind of relationship in the size, shape, weight, and design of the compressor wheel to the design, size, and shape of the turbo housing. I'm thinking that even though the batmowheel fits into any given turbo doesn't mean that it will work at 100% potential in that housing.
Mdub, My thinking (mind you I'm not an engineer) is that there is some kind of relationship in the size, shape, weight, and design of the compressor wheel to the design, size, and shape of the turbo housing. I'm thinking that even though the batmowheel fits into any given turbo doesn't mean that it will work at 100% potential in that housing.
In many cases there are still some gains to be had by putting a bigger wheel in a different cover, but make no mistake the wheel's efficiency will suffer.
Diesel Wrench
Joined: Mar 2010
Posts: 996
Likes: 49
From: Fallon, NV
I'm not that hot on turbos, so I have to ask this: the dyno challenge is for Borg Warner based turbos, don't 6 Ohs use a Garret turbo? Again, I don't know turbos. If this is stock to stock with Batmowheel shoot out, that would settle this once and for all.
Diesel Bomber
Joined: Mar 2010
Posts: 4,233
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From: Dansville NY
they're probably hoping thats what everybody does. I wonder if they have the dyno rigged
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BOMBARDIER
Joined: Oct 2007
Posts: 8,208
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Singles only probably so they don't have to have 40 different wheels on hand for the competition and take all day swapping wheels around. Just eliminates a lot of factors too.
Karl, yeah stock 6.0's have garretts, so do a lot of stock trucks. Must be BW only.
Karl, yeah stock 6.0's have garretts, so do a lot of stock trucks. Must be BW only.
Diesel Enthusiast
Joined: Aug 2010
Posts: 120
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From: Holland
Interesting conversation.
Maybe it’s me thinking as an engineer looking @ the compressor flowmap BorgWarner did a better job than Batmowheel but can you notice this on a dyno? Will be hard to say as some of us use a wastegate or not running a low AFR so there is plenty oxygen left and OK maybe a boost increase and lower EGT on the ones running a free floating turbocharger but will this give that large deference your looking for??? To many open end on engine specifications and engine tune I would say to come to a good conclusion bases on a dyno run.
Testing turbochargers on diesel engines we are looking @ a load of things.
HP/boost (pressure differential)/EGT/compressor discharge temp/exhaust back pressure/o2 left in exhaust gas (AFR)/ turbine speed if we have a hole to fit a speed sensor that is and fuel injected. In general BorgWarner will come up with better numbers as overall they run there turbo in amore efficient way based on the information they give.
Maybe it’s me thinking as an engineer looking @ the compressor flowmap BorgWarner did a better job than Batmowheel but can you notice this on a dyno? Will be hard to say as some of us use a wastegate or not running a low AFR so there is plenty oxygen left and OK maybe a boost increase and lower EGT on the ones running a free floating turbocharger but will this give that large deference your looking for??? To many open end on engine specifications and engine tune I would say to come to a good conclusion bases on a dyno run.
Testing turbochargers on diesel engines we are looking @ a load of things.
HP/boost (pressure differential)/EGT/compressor discharge temp/exhaust back pressure/o2 left in exhaust gas (AFR)/ turbine speed if we have a hole to fit a speed sensor that is and fuel injected. In general BorgWarner will come up with better numbers as overall they run there turbo in amore efficient way based on the information they give.
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BOMBARDIER
Joined: Oct 2007
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All good points, and I agree fully with what you're saying, but the whole point of the argument is that the companies selling them were claiming increases by doing nothing more than just adding a batmowheel... regardless of compressor housing etc... I think that's more what it's about. However, Bullseye may be opening a can of worms here.
Diesel Enthusiast
Joined: Aug 2010
Posts: 120
Likes: 3
From: Holland
Well in general there is no wonder turbo, take that in mind and ad some 5% margin good or bad and you will cover all brands in the same range leaving pressure ratio out of the decision that is.
We even have a name for it. Turbo mafia making money playing with peoples minds and coming short on numbers and data in general so you can only find out with trail and error.
OK it’s not that easy with making conclusions as brands like HOLSET Garrett and BorgWarner can not give out a lot of data as most of it is linked to OEM so we have to excuse them for holding back.
As for most aftermarket turbo stuff I don’t go near them at all and so far they did come short on efficiency and you never know if the turbo can contains his parts if you blow it up big time. Some aftermarket turbo manufactures run containment test so better ask before you bay.
Improvement on flow and efficiency by changing compressor blade design and extended compressor wheel tip is marginal and takes a lot of R&D. A lot of effort is put in to prevent vibrations as the wheels getting smaller in general and having to move a lot more air going closer to all kinds of limits so there is a growing demand for titanium wheels for OEM applications as even billed will suffer from fatigue due to surge and vibrations.
We even have a name for it. Turbo mafia making money playing with peoples minds and coming short on numbers and data in general so you can only find out with trail and error.
OK it’s not that easy with making conclusions as brands like HOLSET Garrett and BorgWarner can not give out a lot of data as most of it is linked to OEM so we have to excuse them for holding back.
As for most aftermarket turbo stuff I don’t go near them at all and so far they did come short on efficiency and you never know if the turbo can contains his parts if you blow it up big time. Some aftermarket turbo manufactures run containment test so better ask before you bay.
Improvement on flow and efficiency by changing compressor blade design and extended compressor wheel tip is marginal and takes a lot of R&D. A lot of effort is put in to prevent vibrations as the wheels getting smaller in general and having to move a lot more air going closer to all kinds of limits so there is a growing demand for titanium wheels for OEM applications as even billed will suffer from fatigue due to surge and vibrations.
