Hans,
Good questions!
I should have clarified a little more. The turbo used on the MSP definitely
shares the same wheel combination as the off the shelf GT25R catalog item,
meaning both turbine wheel and compressor wheel combinations are the same
(same size and same trim). There are a couple subtle distinguishing elements
between the MSP turbo and the off the shelf GT25R that set them apart, but
not in term of performance (power). One, the MSP turbo has a slightly
different compressor housing to accomodating the specific intake/intercooler
plumbing requirements for that vehicle. The other thing is one of the
components (either turbine wheel, turbine housing, or other CHRA component)
is of a slightly different material than the standard GT25R and carries a
different (higher) temperature rating. This could have been something done
to meet the OEM specifications for the turbo application, I don't know reason
behind it.
Aside from that, we have provide replacement CHRA's for that turbo and the
CHRA is the same one used on the off-the-shelf GT25R.
Hope this helps!
George
<SCR ipt><!--D(["mb","- Show quoted text -
> That is strange because most people on the forums believe our cars
> have a T25R, which is supposedly different from the GT25R. Is there
> such thing as a plain T25R, and are you sure the MSP does not come
> with this?
> Were you involved in the development of the Mazdaspeed Protege? I am
> interested in how you know, or what your source for this information
> is. I\'m not trying to be rude or doubt your knowledge, but there is
> a lot of misinformation out there, and it is hard to sift through it
> sometimes. I would just like like to verify this once and for all
> for myself and all the other confused owners out there.
>
> Thanks again,
> Hans Loeblich
>
> Below is what some have cited as "proof" that we have a T25R, some
> marketing stuff from mazda:
>
> Garrett T25 Turbocharger System
>
> Garrett is the largest manufacturer of turbochargers in the world,
> providing engine boosting systems that save fuel and reduce emissions
> while providing an increase to engine performance. Garrett\'s
> turbocharging business has sustained its reputation for innovating
> turbocharger technologies generation after generation. From its long
> list of industry firsts to its leading-edge ball bearing turbos for
> racecars, Garrett develops and manufactures the same cutting-edge
> boosting expertise that goes into all Garrett products.
>
> Most of the world \' s top engine and car manufacturers, including
> Mazda, employ Garrett turbochargers to boost their engines, and with
> 27,000 turbos produced every day, Garrett is a name to trust. The
> T25R ball bearing turbocharger featured on the Mazda Proteg uses
> some of the same technologies as seen in the Garrett Motorsports
> product line. Interesting facts about the T25R ball bearing turbo include:
>
> The ball bearing turbos have less rotating friction than traditional
",1]);//--></SCRIPT>
> That is strange because most people on the forums believe our cars
> have a T25R, which is supposedly different from the GT25R. Is there
> such thing as a plain T25R, and are you sure the MSP does not come
> with this?
> Were you involved in the development of the Mazdaspeed Protege? I am
> interested in how you know, or what your source for this information
> is. I'm not trying to be rude or doubt your knowledge, but there is
> a lot of misinformation out there, and it is hard to sift through it
> sometimes. I would just like like to verify this once and for all
> for myself and all the other confused owners out there.
>
> Thanks again,
> Hans
>
> Below is what some have cited as "proof" that we have a T25R, some
> marketing stuff from mazda:
>
> Garrett T25 Turbocharger System
>
> Garrett is the largest manufacturer of turbochargers in the world,
> providing engine boosting systems that save fuel and reduce emissions
> while providing an increase to engine performance. Garrett's
> turbocharging business has sustained its reputation for innovating
> turbocharger technologies generation after generation. From its long
> list of industry firsts to its leading-edge ball bearing turbos for
> racecars, Garrett develops and manufactures the same cutting-edge
> boosting expertise that goes into all Garrett products.
>
> Most of the world ' s top engine and car manufacturers, including
> Mazda, employ Garrett turbochargers to boost their engines, and with
> 27,000 turbos produced every day, Garrett is a name to trust. The
> T25R ball bearing turbocharger featured on the Mazda Proteg uses
> some of the same technologies as seen in the Garrett Motorsports
> product line. Interesting facts about the T25R ball bearing turbo include:
>
> The ball bearing turbos have less rotating friction than traditional
<SCR ipt><!--D(["mb","> journal bearing turbos. This increases turbine efficiency which
> allows the turbo to \'come up on boost\' earlier and more predictably.
> This translates into enhanced throttle response (crisper).
>
> The T25R turbo\'s ball bearing cartridge is much stronger and more
> durable than an ordinary journal bearing turbo. As long as the driver
> maintains his Proteg by changing his engine oil at regular
> intervals, the turbo will likely outlast the life of the engine.
>
> The T25R has a high temp compressor wheel and a turbine housing cast
> out of an innovative high temp material (Ductile Ni-Resist) to
> further improve the durability of the turbo. The end result is that the
> turbine housing will be nearly impervious to warpage and cracking.
>
> The water cooling lines that run to the turbo allow the unit to
> resist the traditional \'coking\' of oil during hot engine shut-downs.
> When the engine is shut down and the turbo is still very hot, a
> thermal syphon is created in the turbo water jacket. This has the
> effect of thermally pumping water through the turbo to keep it cool.
>
> On 6/1/05, George@ATPTurbo <George@atpturbo.com> wrote:
> > Hello Hans!
> >
> > I work for ATP (one of Garrett\'s performance distributors) and we
specialize
> > in turbo applications that incorporate Garrett\'s ball bearing line. The
> > folks at Garrett wanted us to respond to your request in hopes that we
will
> > provide you with the information that you\'re looking for. First off, your
> > MSP is equipped with GT2554R (aka GT25R) and the corresponding compressor
has
> > been attached for you. Also, you can find the compressor maps for the
rest
> > of the ball bearing family on our web site at ",1]);//--></SCRIPT>> journal bearing turbos. This increases turbine efficiency which
> allows the turbo to 'come up on boost' earlier and more predictably.
> This translates into enhanced throttle response (crisper).
>
> The T25R turbo's ball bearing cartridge is much stronger and more
> durable than an ordinary journal bearing turbo. As long as the driver
> maintains his Proteg by changing his engine oil at regular
> intervals, the turbo will likely outlast the life of the engine.
>
> The T25R has a high temp compressor wheel and a turbine housing cast
> out of an innovative high temp material (Ductile Ni-Resist) to
> further improve the durability of the turbo. The end result is that the
> turbine housing will be nearly impervious to warpage and cracking.
>
> The water cooling lines that run to the turbo allow the unit to
> resist the traditional 'coking' of oil during hot engine shut-downs.
> When the engine is shut down and the turbo is still very hot, a
> thermal syphon is created in the turbo water jacket. This has the
> effect of thermally pumping water through the turbo to keep it cool.
>
> On 6/1/05, George wrote:
> > Hello Hans!
> >
> > I work for ATP (one of Garrett's performance distributors) and we
specialize
> > in turbo applications that incorporate Garrett's ball bearing line. The
> > folks at Garrett wanted us to respond to your request in hopes that we
will
> > provide you with the information that you're looking for. First off, your
> > MSP is equipped with GT2554R (aka GT25R) and the corresponding compressor
has
> > been attached for you. Also, you can find the compressor maps for the
rest
> > of the ball bearing family on our web site at [url="http://www.atpturbo.com/"]<SCR ipt><!--D(["mb","www.atpturbo.com, click
Turbo
> > Info on the home page and then click on Compressor Maps. You\'ll find
other
> > information such as wheel diameters and other useful application data for
the
> > turbos on the site as well.
> >
> > If there is additional information that you\'re looking for, feel free to
ask
> > and if we don\'t have the answers, we\'ll find them for you. We are
somewhat
> > familiar with the turbo that is run stock in your MSP and the particular
> > packaging of that turbo in the engine bay and can offer some input on what
> > potential upgrade paths are available, turbo wise if you\'re not already in
> > tune with that.
> >
> > Let us know if we can be of further help!
> >
> > Regards,
> > George @ ATP Turbo
> >
> >
> >
> > -----Original Message-----
> > From: Hans L [mailto:
thehans@gmail.com]
> > Sent: Wednesday, June 01, 2005 10:29 AM
> > Subject: Garrett Turbocharger Information
> >
> > I am an owner of a turbocharged Mazdaspeed Protege, which uses a Garrett
> > T25R turbo. I am doing some performance tuning, and am in need of the
> > compressor flow map for this particular turbocharger. I have searched for
> > this before, but have come up with nothing.
> >
> > Knowing these numbers would really help me in deciding what actions to
take
> > to furthur tune my vehicle, and if a turbo upgrade would be beneficial or
> > necessary.
> > I and many other Mazda enthusiasts from the forums at
www.msprotege.com
> > would greatly appreciate it if you could send me this information.
> >
> > If I am contacting the wrong department, I apologize, as I could not find
> > any other contact information. But if so, it would mean a lot to me if
you
> > could at least direct me to the proper sources.
> >
> > Thank You
> >
> > Sincerely,
> > Hans Loeblich
> >
> >
> >
> >
> >
> >
",0]);//--></SCRIPT>
www.atpturbo.com[/url]
, click
Turbo
> > Info on the home page and then click on Compressor Maps. You'll find
other
> > information such as wheel diameters and other useful application data for
the
> > turbos on the site as well.
> >
> > If there is additional information that you're looking for, feel free to
ask
> > and if we don't have the answers, we'll find them for you. We are
somewhat
> > familiar with the turbo that is run stock in your MSP and the particular
> > packaging of that turbo in the engine bay and can offer some input on what
> > potential upgrade paths are available, turbo wise if you're not already in
> > tune with that.
> >
> > Let us know if we can be of further help!
> >
> > Regards,
> > George
>
> >
> >
> > -----Original Message-----
> > From: --------
> > Sent: Wednesday, June 01, 2005 10:29 AM
> > Subject: Garrett Turbocharger Information
> >
> > I am an owner of a turbocharged Mazdaspeed Protege, which uses a Garrett
> > T25R turbo. I am doing some performance tuning, and am in need of the
> > compressor flow map for this particular turbocharger. I have searched for
> > this before, but have come up with nothing.
> >
> > Knowing these numbers would really help me in deciding what actions to
take
> > to furthur tune my vehicle, and if a turbo upgrade would be beneficial or
> > necessary.
> > I and many other Mazda enthusiasts from the forums at www.msprotege.com
> > would greatly appreciate it if you could send me this information.
> >
> > If I am contacting the wrong department, I apologize, as I could not find
> > any other contact information. But if so, it would mean a lot to me if
you
> > could at least direct me to the proper sources.
> >
> > Thank You
> >
> > Sincerely,
> > Hans
):
