[gkopeck]

i've got generic turbos that i installed what i thought was correct, only to reinstall them 3 times to get the fit right. problem: there is no "front" or "back" marking, and the fit for each inlet/outlet is the female side (same size dia.) this is unbelievable (curse JC whitney).
what will happen if i'm wrong? will back pressure trash the engine?

 

[Sean Flanagan]

Usually only factory replacement mufflers are uni-directional, Turbos are bi-directional by design to cover a wider array of applications without having 3 million different designs.

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Sean
Heavy '73