turbodailydan

can anyone tell me the spec's of the compressor wheel and turbine wheel of a garrett t3/t4 57trim?

i have a spare that needs a rebuild, and am thinking about upgrading the comp and turbine wheel, has anyone done this on this turbo? or can anyone recomend a compressor wheel/turbine that would be a worthy uprgrade to this turbo?

thanks - dan

turbodailydan

im trying to get more torque so what could i have done to this turbo to improve this? thanks

TheShodan

iTrader: (14)

Changing your exhaust wheel will not help you gain any torque. The standard garrett exhaust wheel is 2.559 wheel diameter, what is commonly known on H-T as the stage III. If you change to a larger exhaust wheel, you lose more effective responsiveness with the system you already have. The larger exhaust wheel/smaller compressor wheel combination is best for those that ALREADY have a significant amount of torque (like a diesel application) in which power is not a consideration.

For the 57 trim, that exhaust wheel is matched JUST fine with that compressor wheel. If you want more torque, for the same given HP level, you're going to need to do it the old fashioned way; changing your Bore AND stroke of the actual engine.. (simply boring it out doesn't help much).

SergEK

Play with the cams/cam timing