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View Full Version : Need help with what size A/R on turbine and compressor housing on TB45



JuzGU
9th May 2012, 08:00 PM
Hi Guys
I am rebuilding a TB45 with 5 speed manual to suit a turbo and am currently looking at the garrett GT3582R with external wastegate
the thing i am not sure of is what size A/R to go for on the turbine housing
I have the option of .63 or .82 ( have been told these are the best two options for this engine)
On the compressor housing the A/R is .70

The car will be used for mainly towing (up to 3 tonne) so i want the turbo to have a usable rev range from about 1000-4000 rpm

Does anyone have a similar turbo setup on their TB45 and can tell me what size A/R they have on their turbine and compressor housing with what sort of usable rev range they get on the turbo, so i can compare different setups.

Any help will be greatly appreciated