Why bother asking if you're not going to listen to the answers?
Announcement
Collapse
No announcement yet.
Oil restriction in turbo supply hose
Collapse
X
-
Don't mess up an expensive turbo - change the drain hose for a new one and make sure it is draining properly that way, it might have been kinked at some point and is not visible under the braided covering. (if it isn't braided please excuse me - I'm a normally aspirated owner) I got a company to make up a new fuel return hose for my last year and they completely messed it up - fuel flowed through it but pressure at the rail went up to at least 10 bar.
It can't be that hard to get right; it is a hose that oil flows along and if oil comes out of the turbo into it at one end and gets back into the sump at the other end it surely must work!
Comment
-
The only reason your oil is not draining (in my experience) is due to a blocked/partially blocked oil return or crankcase pressure. In terms of the latter you need to look at your entire pcv system/catch can etc. Some people install a check valve on the oil drain to combat this. Garretts utilise restrictors on their bb and journal turbos. I'm not sure about kkk/bw but a quick look on their website will tell you. Don't guess. Listen to all the other people who have chimed in. They are the brains trust man!
Comment
-
Originally posted by audi660 View PostI put a restriction of 1.5mm at the turbo oil inlet and a 3.8mm on the other side of the hose that goes onto the block.
That has stopped the oil leak, but the oil is still not draining fast enough coz now the oil is going past the seals and the car is smoking.
Should I make the 3.8mm hole smaller to restrict the oil pressure a little more?1360kg/600Whp Avant 0-200km/h 9sec
Comment
-
Originally posted by audi660I put a restriction of 1.5mm at the turbo oil inlet and a 3.8mm on the other side of the hose that goes onto the block.
That has stopped the oil leak, but the oil is still not draining fast enough coz now the oil is going past the seals and the car is smoking.
Should I make the 3.8mm hole smaller to restrict the oil pressure a little more?
Or a troll
- 1 like
Comment
-
It's smoking more because you have backup up the draining oil into the turbo.
I'm no expert on turbos, but that has always been the last thing I would expect to see -a restrictor in the drain, that had always been as free-flowing as possible.
Comment
-
Originally posted by audi660I put a restriction of 1.5mm at the turbo oil inlet and a 3.8mm on the other side of the hose that goes onto the block.
That has stopped the oil leak, but the oil is still not draining fast enough coz now the oil is going past the seals and the car is smoking.
Should I make the 3.8mm hole smaller to restrict the oil pressure a little more?
Last edited by adam g; 15 November 2017, 22:38.
Comment
-
Comment