Read Alta's reply a little more closely and you'll find that it DOES come with the supercharger pulley. Also if you take a look at the picture at the beginning of the thread you can see it just under the downpipe.

 

With this stand alone ECU , will we be able to do our tuning, or at least get an Alta approved shop to do a custom tune? Or is it pretty limited to the the maps that you have created?

Thanks

///Gilbert

 

so what are the technical details on this kit?
how much boost does it make?
when they say oil and water lines included what does it need a water line for?
where is the oil tapped from and where does it return?
what unit is used to control boost?
why are there no injectors included?
also I dont see any place to fit an O2 sensor on the downpipe?

 

F15EWeapon,
The Price is $4000, and the HP the turbo is capable of is 400. That is not what we plan on selling the kit as be any means. With the stock internals 300 is really pushing the limit. 250WHP is a good high somewhat safe limit.

saifa,
Doing just the turbo sounds like a good way to go but truly the 1.6 engine is just not big enough to push a decent turbo. I think to get 300WHP from a turbo only will be a turbo that doesn't build boost until 4000 RPM or later. That means almost no power until then! Comparing this to a Mini with the SC that builds boost instantly at 2000RPM i don't think most people are not going to be that happy.

betet,
Yes and no. Lets forget the price for a second. One price will be a locked ECU. This Locked ECU will be able to do a few extra things like programable outputs, and inputs. The only thing customers can do is mess with a plus or minus from our fuel map and timing map. So still tuning can be done. Fully unlocked ECU will have all maps exposed, and free to do almost anything to the program. Both of which a wide band 02 Sensor can be added to log AFR's or do Auto tuning with fuel.

Price for the completely unlock ECU with wideband will be about $2000, where as the complete base ECU will about $1200.

Profpatpending,
There are lots of techical things we haven't explained, nor put on our site. All in good time. But to answer a few.
1. It makes roughly 1.1-1.2 bar at redline at the lowest setting (which is what we recommend)
2.Oil and water fittings are all included. Oil tapped into the pressure sensor, and coolant the reservoire.
3.Returns to pan through a special fitting.
4.Boost is controled with the actuator and a simple boost source. Our Manual boost controller is not part of the base kit but it is part of the higher boosting kits.
5.Don't need them for that boost level. The higher boost level kits have our 550cc injectors.
6.There is they are just not on that part you see in the picture.

 

I remember reading that the max range of the OEM MAP sensor is 18 or 19 psi
so how do the twincharge kits get past this without throwing codes,
also how does the ecu know how much boost is being made if the max range of this sensor is exceded?

 

the map sensor stock is 2 bar....

 

The base kit will not exceed the stock MAP sensor, but with the Hydra/injectors/fuel pump/boost controller upgrade, it won't matter because the Hydra uses it own MAP sensor. The ECU kits should be done in a month and we will have some dyno numbers with the ECU very soon!

 

I believe it's 2.5 bar. The range of the output is 0-5 V which corresponds to an input range of 0-2500 mbar (so about 22 psi gauge pressure max).

 

Jeff, just to clarify, given your response above regarding a standalone turbo (SC ditched), does Alta still intend to release one for the MINI? I was under that impression, but I'm now wondering if you guys are feeling otherwise. I appeciate the clarification. Thanks.

 

What happened for that aftermarket turbo for the Cooper? Didnt they take it off the market because of problems? What malfunctioned?

 

Sorry missed this one.

TonyB,
I think you mean Mini (standard), and if so it was never a car we intened on releasing a kit for, too many problems. I hope we didn't express this in early conception, it was not something we meant to do. But that is not to say that our kit can't be made to work with it with some slight changes to the boost tube and a smaller turbo. We will see how the Twurbo goes on the S.

 

Jeff, I was referring to the MCS. I somehow thought that you guys were working on a turbo for the MCS, sans the stock blower. If not correct, my mistake then...

 

Twin charge kit from Alta but there are rumors that Mini Madness is working on a Turbo only kit for the MCS.

 

I haven't been in communications with Madness for quite some time... I chatted with Jeff over the phone regarding my end-links several months back, and we concluded our conversation about new Alta products coming to mkt... Sounds like I heard him wrong.

 

Cool

 

How does this Alta New TC kit compare to the Helix Kit???

 

Its a competive system in a standard configuration.

 

If someone is truly interested in a Turbo only kit call us. Maybe we can sell you some of our parts that will allow you to build one. The only problem is the turbo i suggest to be used isn't one we have instock. Also i think in order to get a turbo to build boost at levels close to the SC it is going to be VW sized. Which means no power! In the end the packaging to install the TC kit is much simpler. Another great reason to just do TC instead of Turbo only. not to say that you can't make power with the turbo only, but the lag associated with it will not be something mini owners will go for.

 

does the SC pulley need to be replaced????
also will you sell the parts seperate?
so I dont have to shell out the full ammount altogether I can buy the parts and build up to a Twin kit???

 

Will the TC work with the JCW kit? Sounds like the JCW upgrade will become useless. Assuming BHP-WHP stats the same whether used with or without JCW.

 

I'm assuming it's almost useless except for the headwork.. Both the upgrade pulley and ECU upgrade will be useless unless you want to risk seeing your pistons break....

With the added turbo, expect your PSI to be over 20 lbs.. What Alta did (just like HELIX) they offer a bigger pulley to make sure that your total PSI is on a safe level.. Not sure though how much added PSI will the JCW headwork do w/ the better flow.. With the added boost, you want better tuning designed for the TC,so kiss the JCW ECU tuning goodbye...

///Gilbert

 

Can anybody tell me the difference between the GT28R, used in the SPi kit and the GT3071R, using in the Alta Kit?

 

Basically the GT3071 has both a larger inducer and exducer than the GT28R has.

From here: http://www.turbobygarrett.com/turbob...gt_basics.html

GT Basics / Nomenclature

Today, Garrett has a wider selection of GT-series turbos available than ever before. As a result of this, please note that we have made a subtle modification to the GT nomenclature.

In our product catalog, all offerings are grouped according to their turbine wheel frame size. The frame size of a turbo or CHRA is dictated by its turbine wheel inducer diameter . The larger the turbine inducer, the bigger the frame size-- so any turbo in the GT42 family has a larger turbine wheel inducer than those in the GT35 family, and so on.

In the model name of each turbo or CHRA, you'll also notice two digits after the frame size. These two digits refer to the compressor exducer diameter, as measured in millimeters.

Let's use the GT4294 as an example. This unit has a GT42 frame size turbine coupled to a 94mm (exducer diameter) compressor wheel.

If there's an "R" on the end of a model name, this means the unit is ball bearing. So, a GT4294 is not ball bearing; whereas a GT4294R is ball bearing.

The biggest change related to the nomenclature is this: units which utilize a 53mm turbine wheel (as measured at the inducer) are now referred to as "GT25" frame size, while units employing the slightly larger 53.85mm turbine wheel are now referred to as "GT28" frame size.

For those familiar with our product range, this means that the unit formerly known as "the GT28R" (part number 466541-1) is now in the GT25R family. More specifically, it is now a GT2560R model.

A Guide To Garrett’s "GT" Model Numbers

GTxxyyzz:

* Positions "xx" refers to the frame size of the turbine wheel inducer.
o For example the "GT28" in "GT2860RS" refers to its turbine wheel frame size family. All GT28 units use a turbine wheel with 53.85mm inducer diameter
o As a rule of thumb, the larger the number, the larger the turbine wheel.
* Positions "yy" designate the compressor wheel exducer (major) diameter in millimeters
o The "60" in the GT2860RS example above has a 60mm compressor wheel exducer diameter.
o Note: Wheel sizes 100mm and over omit the "1" (hundreds digit)
o Example: the 02 in a GT4202 refers to its 102mm compressor wheel exducer diameter
* Positions "zz" may be used to designate special features of a particular turbocharger where applicable
o Example: GT2860RS
o "R" = this is a Ball Bearing unit
o "S" = used for units which require some differentiation from units in the same family
Compare a GT2860R to a GT2860RS. While both are ball bearing and externally similar, the GT2860RS is better suited for higher-flow applications than the GT2860R. In this case, the S reflects the higher-flowing nature of the GT2860RS

 

yea... What does that mean for our Minis... please excuse my stupidity.

Edit: Nevermind. It's been discussed before here. It still doesn't really make much sense to me. I guess I'll see when dynos come out for the Alta kit. Althought, I'm more interested in area under the curve than just peak hp.

 

Profpatpending,
The SC pulley is included and at this point we will not sell them separate. The kit really doesn't work if sold in separate parts. Meaning you can't just buy the header and install it little at a time. Because in order for it to work you would need to install nearly everything. The only thing that we could eliminate from the kit is the SC pulley but you will just have to adjust boost lower using the WG. The only optional parts are the ECU, injectors and fuel pump. All of which are future items to allow end users to hit that 250WHP mark safely.

blue agave,
Yes pretty much except for the head. The JCW kit in itself is very expensive anyway. Our TC kit cost less than the JCW kit by quite a bit. One could easily say, you will get more power from a TC kit than the JCW kit.

I don't know, but maybe someone else does, what turbo others use. I know it is a GT28... something. There are GT28 turbos that flow much less and some that flow almost the same amount of air as the GT3071 we use. The main difference is the turbine wheel(the wheel the exhaust drives) is larger on our turbo. Since the header is very short, and we are already getting boost down low from the SC, a larger less restrictive wheel can be used. The way to compare is a GT2871 and GT3071 is that being they have the same compressor wheel, the GT3071 will flow more because of the larger turbine wheel. What does this mean, more top end power, less back pressure, cooler charge, more HP. The only sacrifice is boost responce. But we have a SC to fix that!