A/R- Aspect ratio of a housing attached to the turbo.Originally Posted by rainsey
Peter has changed his turbine housing.
Its the way they measure the size of the housing. Generally the smaller the number the quicker it will respond but will be restrictive in higher rpm due to not being able to flow enough.
I would be inclined to leave a 0.84ar turbine housing on a chev fitted with an auto.
Ultimately I would bin the garrett and put a borg warner turbo on it instead.
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