I have heard a few rumours regarding this!

 

One is that on a BB turbo the oil is sprayed onto the Ball Bearings and requires a different oil feed pipe to do this?

 

On a normal thrust bearing turbo, it is more of a drip feed, anyone know for sure?

the oil from the feed pipe will be supplied under pressure. you dont just want a drip feed going to the shaft journal! :eek:

Yeah OK I know it ain't a drip feed, I will use the exact terminology next time :p

well i would have thought it would be the other way round actually, ie: more oil flow for a non BB type turbo??

well i would have thought it would be the other way round actually, ie: more oil flow for a non BB type turbo??

 

from what I think is right, the BB has a higher pressure spray and the normal thrust bearing has more flow but less pressure?

I would have thought most of the design would be built into the housing of the turbo for oil flow

From the feedback I have had on other forums most aftermarket BB turbos come with an adaptor which fits onto your current oil pipe, giving the necessary feed to your bearings!

BB turbo's will happily run on slightly restricted oil flow than from stock, some companies say it's worthwhile and some say yeah if you wanna do it it's not gonna cause any probs. You certainly wouldn't go a size up on oil feed for BB's though, they can be given too much

smithy

.....and some turbo manufacturers will NOT honour the warranty if the restrictors are not fitted to the oil lines ;)