Can you replace a TT's primary turbo with any primary off any series?

[xsvpwr]

Hey guys, would appreciate if anyone could let me know if the primary off a 1996 BG5 Legacy with an EJ20H could have any primary off any series as a replacement? I haven't pulled the old one off yet so don't know what model it is but I'm guessing VF13...

[Joker]

pretty much yes - I have a 31 on my 98 BG

I do recall Munkvy saying one of them has a slightly different size intake somewhere making it a tad difficult for one of them but I cant recall specifics

[telemekas]

The primary turbos VF13,VF16,VF18,VF20,VF25,VF26,VF31 and PE1016F are direct bolt on replacements. However the wheel sets, bearings and turbine A/R does vary between turbos.

The VF33 primary is the exception with its larger compressor inducer (60mm)and exducer(50mm).

[Munkvy]

That Revision D BE/H turbos don't fit on a BD/BG as the intake piping and the intake on the turbo is much larger. Thats the only thing I know for sure sorry.

[xsvpwr]

cool cheers for the info