What size is a 2565?
he melted a piston on a 1.9TDI?
So basically a gtb2565vk is a gt2559v bmw turbine wheel(old 530d series) and a 65mm compressor wheel with a 50mm inducer and extended tip. The inducer dictates how much air the turbo can ingest but you’re increasing the surge risk.
Another source for a large turbine is the old Renault veil satis 3.0 tdi turbocharger, it’s also a gt2559v turbo with massive compressor housing, I used that before but it’s very laggy.
The bmw gt2260v (730d 2007 on) turbine is larger than the Audi gtb2260vk and Sumalaya Turbo Company made a large batch of AMG style turbine wheels with either 1 or 2 channels for oil seals. These are the most used aftermarket turbine wheels on the market and lately a “lighter” version of that came on the market which some turbo builders use it for the gtb ball bearing turbo cartridges in conjunction with dual ceramic ball bearing cartridges !
Also turbines from larger size turbos have been known to be machined down and used on some bespoke chra’s !
Some creative minds have also used cnc mills to machine chra’s to take larger ball bearing cartridges with success as well as commissioning foundries in china/India to pour their own manifolds and chra out of cast iron/steel ! If there is a market, somebody will do it at some point!
As for my mate melting a piston, it was a combination of high revs, a streaming nozzle and the rest is history !
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