I keep hearing about T3 and T3/T4 hybrid turbos, TO4__, and T6__ Turbos.

I dont know what that means.
I can read a compressor map, I can calculate the CFM flow of a turbo, but I just dont know what The T_______ means. do the numbers measuer how big it is? what is the O is TO4____ for?

please edumacate me, Im reading maximum boost, by corky bell, but its a little dated.... I dont think it even includes ball bearing turbos.

That brings up another question.... Whats up with ball bearing turbos? I know they have less lag, and I know that the bearing is probably a ball ( ) but I dont know what else.

Could someone help me? I have searced on the net, but found virtually nothing.

 

T04B, T04E, T04S - larger the turbo family size from left to right
T61, T64, T66, T70, T72, T76 - larger the turbo from left to right

It's just the model of the turbo - it doesn't necessarily specify how big the turbo is.

T04 (actually a "zero" not "O" as in "oh", but most people call it a tee-oh-four).&nbsp It doesn't mean anything - it's just to differentiate a turbo model family.

It's the most recent "enthusiast" level book written on the subject.&nbsp Obviously you haven't read "Turbocharging" by Hugh McInnes.

A "normal" turbo runs drilled oil journal bearings to support the center shaft.&nbsp A "ball bearing" turbo replaces these two oil journal bearings with angular-contact ball-bearing casings.&nbsp The exercise was to primarily reduce damage from compressor surge; the faster spool-up was a secondary benefit.

Check out Turbonetics Inc @ http://www.turboneticsinc.com/ for more details...


-Ted

 

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