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16g turbo and super 20g

Tre3zy

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Nov 25, 2008
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602
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South San Francisco, CA
click

i was talking about this one.... i think they were saying that if you use a S16G hotside that the new 20gwheel will hit the back plate and will need to be machined...
 

donniekak

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Jan 1, 2009
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surprise az
That isn't what a hotside is. The hotside is the turbine housing. As long as a turbo has a tdo5h turbine, you can run it with any td05h turbine housing. A 14b, small 16g, big 16g, evo 3 16g, 18g, 20g, can all use the same turbine housing, as long as they run the td05h turbine.
 

fuel

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Feb 23, 2009
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Toronto, ON, Canada
my understanding is you can only use a 20G compressor wheel on the 'super back' turbo cores/cartridges, ie small and big 16G. The 14B and earlier TD05H's don't have the extra space machined from the core.
 

fuel

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Feb 23, 2009
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2,166
Location
Toronto, ON, Canada
also I've ordered the 20G wheel, machined Evo III compressor housing and genuine MHI rebuild kit from kando-dynamic aka kinugawa turbo and found their service very quick, however the Evo III compressor housing is obviously a copy, but the quality looks to be just as good as the original compressor housing. I am unsure of the origin of the compressor wheel, but I assume it isn't genuine MHI.

As my original VR-4 turbo is a 'big 16G' using the 'super back' style wheel, the 20G wheel simply swapped in place. You will not be able to fit a 20G (or even a big 16G wheel) on a 14B turbo core/cartridge, UNLESS you machine out the core to suit the larger diameter/shape of the underside of the big 16G/20G wheels. I am not sure about the small 16G which is why I haven't mentioned it yet - to be honest I don't think I've ever seen a small 16G turbo, all the Evolution VR-4s, Lancer Evo1/2/3 I have come across have big 16G turbos. I think perhaps the small 16G is an American thing rather than on JDM vehicles. I would have assumed being a 16G they too would be a 'super back' wheel, but those links above are suggesting otherwise.
 

donniekak

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Jan 1, 2009
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748
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surprise az
Again people, this is a hotside. And a td05h hotside clamps onto any td05h turbo.
evo3.jpg


For the people converting turbo's. The big 16g, evo3 16g, 18g, and 20g, all have 68mm exducers. So any bearing housing/backplate, for those turbo's can be used for any other of the group, with just a compressor housing change.
 
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