Quote:
Originally Posted by Diesel42
Hey Dougal you pulled through, thanks. O'kay, so is this to say that any T-25 A/R=.60/.46 will perform within this mapping? So if us novices were to call up a turbo spec. shop with this mapp they would know which turbo to sell us? You mentioned turbine size. What turbine size is right for the 3B application? Well done, this post should be sticky'ed.
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This compressor comes paired with a housing A/R of 0.48.
The compressor wheel comes in two "trims". The trim refers to the ratio of wheel diameters (small^2/big^2).
The 60 trim wheel is 51.3mm od and steps down to 40mm at the intake.
The 55 trim wheel is also 51.3mm but steps down to 38mm at the inlet.
But the differences in the maps are minor for this application, either will do.
The turbine can vary, some will be 0.49 A/R and this is the one you want. Others will be 0.64 A/R which will still work but won't boost as soon as the 0.49.
These numbers are cast into the turbine housing (hot side) by the neck which bolts to the exhaust manifold.
I think the closest turbo in the current garrett GT range would be the GT2052.
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