T4 Versus T6 turbo flange

[Grant Monkhouse]

Just something people never get to actually see, as often (like myself) thought that T6 was huge and not any good on a rotary. But honestly a T6 isn't the much bigger of a flange. And when choosing a large turbo, S400 sized GT42/GT45 a T6 flanged back housing can mean the difference of 2-300 quid especially on the Borgwarner turbos.

I don't know what like for like comparisons of hot side AR would make if they were the same but I'm looking and reading.

I know lads with turbo drag cars that have run s475 turbos with a 1.32 AR T6 flange/frame and not had any issues spooling the turbo

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