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Rebuilt/Hiflowed R33 rb25 Turbo

nct13
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BOOSTD Mentor

BOOSTD

Posted
Posted

All skyline turbo's are BB, Vg30 had both BB and Thrust. If you look at the center housing there will be a 10mm bolt holding the BB cartridge. Non ball bearing nissan turbos have a finned backing on the compressor cover and come standard with steel turbine wheels. Having said all that some workshops hiflow bb turbos and change them to thrust at the same time. Best way to tell is to look inside the oil outlet at the bearings.

TTT Grand Master

TTT

Posted
Posted

exactly..

and, not that many places have the equipment to rebuild turbo's with BB cartridges as they don't have the balancing machine..

maybe this place does but it seems to be quiet rare.

Most common rebuilt of RB20/25 turbo's to make them T4/3, is to rip the internals out and replace with thrust bearings and T4 compressor and T3 exhaust wheel and machine the openings out as required.

So unless the rebuild of this turbo cost you in excess of $2K, I doubt that it is a BB turbo any more.

You should also quote what the shop told you about what power capabilities it has and what boost levels is it safe for.

saying that it now uses a larger siera wheel doesn't really tell us much.

Robo's Mentor

Robo's

Posted
Posted

Exactly, generally you pay an easy $500 more to get it BB hi flowed than bush. Bush is the cheaper way to go costing upto $1,500 for a hi-flow.

In reality terms, i havent experienced a bush hi-flow!! But it maybe good.

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