oil return line size?

[INJEN78]

ok so were boosting my friends integra and he has everything but the oil return line..so im just wondering what the ideal size for a return line would be??
i know it shouldnt be too big but i also know it cant be too small...
its your basic t4/t4 ebay turbo...only running max of 8psi

 

[Matts96HB]

running a -10an on mine i belive.. might be -12an.

 

[Briansol]

-10an is what i used

 

[99sidude]

Make sure that return line goes directly into the pan. My roommate just toasted his $$$ gt3076 because his return line looked like a sink drain going back into the pan. Oh he also neglected to use an oil pressure restrictor, pretty sure that also fucked it.

 

[Matts96HB]

ouch, gt3076r down the drain, thats painful