Anyone have experience with Comp Turbos?

**Thuppu** · 24 July 2013, 17:13

I would like to see how a BB turbo works without a oilfeed restrictor.

**europeanme** · 24 July 2013, 17:31

http://www.s2forum.com/forum/showpost.php?p=587385&postcount=10

**Thuppu** · 24 July 2013, 19:50

Mike, yes, a BB turbo usually needs a restrictor. I wouldn't remove it. Then again the in-line filter must be good, the 0,4mm restrictor can easily be clogged.

**quattro84** · 24 July 2013, 20:38

That compressor cover shattering is not tolerable. Looks like underquality castings. Better to improve that as CT in stead of polishing it...
I can't believe this failure is related to oil starvation, looks more like unbalance/clearance/overspeed related issue. (though snapped shaft end looks discoloured)

Have you opened it up? More pics?

Everyone is producing in China now, better hope quality&metallurgy check does not happen there.

**quattro84** · 24 July 2013, 20:42

Ooh and for inlet oil filter size, at least 40μm mesh or 20μm for diesels.
As for qty, normally you'd need at least 2litre/min if running with a thrust bearing.

Next to that make sure your crank case ventilation is working properly, if not your CHRA pressure = sump pressure making your piston ring seal on the turbine end the weakest link disposing the oil in the exhaust. BTDT on more occasions...

**europeanme** · 25 July 2013, 07:58

Originally posted by Thuppu

Mike, yes, a BB turbo usually needs a restrictor. I wouldn't remove it. Then again the in-line filter must be good, the 0,4mm restrictor can easily be clogged.

I'd never dream of it....