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Discussion Starter · #1 ·
I just baught a garrett turbo off of ebay with a .42/.48 housing on a T3. I need to find out what trim size it is so I know what compressor map to use. I've got a bunch of numbers, on a badge, on the side of the turbo. Is there a web site where i can punch in these numbers to find out the trim size?? I also don't know what car the turbo came off of. I went to www.egarrett.com but that didn't really tell me anything.

Thanks for any help.
 

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Discussion Starter · #2 ·
Someone told me to measure the inducer and exducer and get the average between the two and whatever number that was close to, was the trim size of my turbo...does that sound right?? And i'm guessing that the inducer and exducer are the fins, or the impellers(I don't really know what to call them) right?

i've got a 58mm inducer and a 50 mm exducer.
 
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