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Std Vl Turbo On Rb25/30

crispyvl

By crispyvl,
in Engines & Forced Induction

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SargeRX8 Grand Master

SargeRX8

Posted
Posted (edited)

Rotate your turbo housing. Its facing the wrong way. Just loosen the 4 or 6 screws holding the exhaust housing to the turbo core and rotate it 180 degrees then tighten it up. You might want to make sure you do it right though, ie your oil feed is at the top of the turbo still, and draining out the bottom. You DO NOT want water at the top. It will only fit one way so do it right coz its a bitch in the arse to keep adjusting. I got my old gt3071r the right way around first go

Edited by SargeRX8
Bsa Mentor

Bsa

Posted
Posted

Pics to explain better no matter how much you rotate the exhaust housing the dump should face down on a stock manifold when you turn the housings it rotates the core you want the oil drain facing straight down

JonnoHR31 Grand Master

JonnoHR31

Posted
Posted

yep vlt orientation is completely different to rb20/25. mixxing manifolds and turbos means a custom dump, not worth it when you can get a stock turbo to suit for ~$300 in good condition

rotating the exhaust housing will never change which way the dump faces....

SargeRX8 Grand Master

SargeRX8

Posted
Posted

yep vlt orientation is completely different to rb20/25. mixxing manifolds and turbos means a custom dump, not worth it when you can get a stock turbo to suit for ~$300 in good condition

rotating the exhaust housing will never change which way the dump faces....

I had it wrong lol I thought he meant nothing was lining up, the we setup. When he said upside down I assumed the t3 flange was out along with the dump.

crispyvl Apprentice

crispyvl

Posted
  • Author
Posted

VL dump wont fit, as vl manifold faces straight down, wheras rb25 manifold faces sideways. PS ive had a highflowed vl turbo on a 25/30 and it sucked, just get a real turbo

mine is hi-flowed too. is it really that bad? was the power similar to a std rb30et?

GTScotT Grand Master

GTScotT

Posted
Posted

It could have been rotated by someone.

Well I was wrong too, as Adriano confirmed the VL manifold points down, but what did you mean by being rotated? Have a hard think about it for a second.......... You cant rotate flanges on a cast iron housing mate... lol

The VL rear housing is complete with dump.. The wastegate flapper is part of the dump so its also hard to change that.

My bad tho Adriano, I thought I remember a VLT manifold looking like a RBDET one, but it has been a few years since I toyed with one of those!

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