Garrett M12 (xr6 Turbo) Specs?

[thec]

I know the compressor cover is a .5 a/r, and I know the turbine housing is a 1.06 a/r.

I would like to know what the compressor and turbine wheels sizes are?

I would also like to know what psi the wastegate is set at from factory?

Also, how difficult would it be to change the .5 compressor cover to a 4 inch bell mouthed inlet, .7 compressor cover from the gt35r?

What has to be done specifically?

Thanks

[xlnt6]

Hi,

I was wondering the same thing, so I rang and spoke to Garrett Australia (refer to turbobygarrett.com.au) as they put together the turbos specifically for the XR6T. They were extremely forthcoming with information, and stated it was a GT3582R that the 0.5 AR compressor cover has a 61 mm compressor wheel and that it could be upgraded by fitting a 69mm wheel from the next series GT up. The wheel cannot be upgraded alone (unless some major machining of the compressor cover was done, but this is not recommended). At the same time the 0.7 AR compressor cover (which has a 4 inch bellmouth) was recommended and a matching backing plate also. I think it was about $500-$600 in parts alone, and they recommended that it be rebuilt (new bearings), but optional, at the same time. Of course this would entail a re-balance as well. The turbine housing (they told me the wheel size, but I've forgotten...), is 1.06 AR and there are no upgrades available, and that changes to the exhaust housing are not warranted as the internal wastegate is already at it's limit. The recommended changes here were to upsize the wastegate flap button and a minor machining of the port to match. The standard turbo is good for around 400kW before it's at it limit and the above changes should be good for another 50-60 kW.

Beyond that the next step would be a GT42 ball bearing turbo with matching external wastegate and custom extractor type exhaust manifold. They have 70-75 mm compressor inducer sized wheels, and support up to 1000HP.

Check out there website, it's got a lot of useful info, and they can recommend someone in your area authorised by them to do any crazy sh*t you like !!!

Cheers

Robin.

[badxr6]

  xlnt6 said:

Hi,

I was wondering the same thing, so I rang and spoke to Garrett Australia (refer to turbobygarrett.com.au) as they put together the turbos specifically for the XR6T. They were extremely forthcoming with information, and stated it was a GT3582R that the 0.5 AR compressor cover has a 61 mm compressor wheel and that it could be upgraded by fitting a 69mm wheel from the next series GT up. The wheel cannot be upgraded alone (unless some major machining of the compressor cover was done, but this is not recommended). At the same time the 0.7 AR compressor cover (which has a 4 inch bellmouth) was recommended and a matching backing plate also. I think it was about $500-$600 in parts alone, and they recommended that it be rebuilt (new bearings), but optional, at the same time. Of course this would entail a re-balance as well. The turbine housing (they told me the wheel size, but I've forgotten...), is 1.06 AR and there are no upgrades available, and that changes to the exhaust housing are not warranted as the internal wastegate is already at it's limit. The recommended changes here were to upsize the wastegate flap button and a minor machining of the port to match. The standard turbo is good for around 400kW before it's at it limit and the above changes should be good for another 50-60 kW.

Beyond that the next step would be a GT42 ball bearing turbo with matching external wastegate and custom extractor type exhaust manifold. They have 70-75 mm compressor inducer sized wheels, and support up to 1000HP.

Check out there website, it's got a lot of useful info, and they can recommend someone in your area authorised by them to do any crazy sh*t you like !!!

Cheers

Robin.

I have done this and its a nice mod but its a b##ch to mount a air filter have to make some mods to the power steering line and resivor

[thec]

  badxr6 said:

I have done this and its a nice mod but its a b##ch to mount a air filter have to make some mods to the power steering line and resivor

<{POST_SNAPBACK}>

Do you mean you put the gt35r .7 comp cover on the standard turbo?

[badxr6]

  thec said:

  badxr6 said:

I have done this and its a nice mod but its a b##ch to mount a air filter have to make some mods to the power steering line and resivor

Do you mean you put the gt35r .7 comp cover on the standard turbo?

yes and with a bigger comp wheel as well

[thec]

  badxr6 said:

yes and with a bigger comp wheel as well

<{POST_SNAPBACK}>

What size comp wheel did you use? What size is the standard xr6 turbo comp wheel?

Was it a straight bolt on?

How much did it cost?

Thanks.