BSEK, Will high oil pressure cause burning oil?

[tom04841]

Block was rebuilt about 2000 miles ago. It has been smoking since the rebuild/BSEK.

The shaft seals on the turbo are not leaking.....I have removed the turbo to verify that.

Reman'd head with viton seals.

I honed the cylinders and made sure all the end gaps of the rings were withing specs.

Replaced pcv valve with 2 different OEM valves....no change.

Compression is at 125 across all 4 on a cold motor, oil to each cyl didn't increase it...keep in mind I have a set of webcam cams.

Rolled # 1 to TDC, put compressed air to the cyl, blocked pcv and vc breather, and had a very tiny bit of a hiss from the oil fill hole....nothing you could feel, but could hear it. Nothing from the intake or exhaust either

Car runs GREAT!! The smoking is irritating me though. I can't figure out the source and it is driving me nuts.

 

[79magnumgt]

mine is doing the same thing so bad that i got puled over for it now from what im told i put moly rings in it n i did break it in right n my rings didnt seat right from talking to alot of old school engine builder im told moly rings are a pain to braekin

 

[SnowBird]

What is your oil pressure while driving? Ive heard high oil pressure can cause the turbo to burn up the oil on the exhaust side so you wont see it in the intercooler pipe.

I feel ya on the smoking, I just revisited a thread about my car and smoking, Fully rebuilt engine that still smokes at idle with 140 miles on it. Im changing the valve seals this weekend, but it already looks like you did that. Definetly hit this thread up when you figure it out.

 

[98gst14b]

I have been having this problem for awhile now, I rebuilt the engine, replaced the turbo, and changed the valve guide seals and still smoked. MY problem ended up being the OP from the filter housing was too high, causeing oil to slip pas the seals in the turbo, I re-routed the supply to the head and no problems, I do wonder if the head is supplying enough oil tho..and I hope my turbo seals are alright.

 

[Defiant]

Oil pressure won't affect oil burning, to answer your first question.

 

[98gst14b]

Oil pressure won't affect oil burning, to answer your first question.

So too much oil pressure wont blow oil throught the turbo seals??

 

[dsmfa9nutter]

How did you break it in? If you babied it, you did it wrong and your rings aren't sealing like they should be.

 

[98gst14b]

How did you break it in? If you babied it, you did it wrong and your rings aren't sealing like they should be.

True that I tried racing an AMG @ 32 miles

 

[JusMX141]

MY problem ended up being the OP from the filter housing was too high, causeing oil to slip pas the seals in the turbo, I re-routed the supply to the head and no problems, I do wonder if the head is supplying enough oil tho.

Remember that 14B's come from the factory on 1G DSM's supplied from the head with a restrictor built into the banjo fitting at the turbo.

I feel the head gives more than enough oil to any turbo without worrying about too much pressure blowing the turbine seal.

http://www.dsmtuners.com/forums/tur...cations-all-turbo-brands-2.html#post151738241

If you actually ran too much pressure to your turbo for a decent amount of time, the incoming oil flow will load the turbine shaft causing it to contact the journal bearings rather than "float" on them. This will wear the journal bearings, causing excessive up/down shaft play....mostly on the turbine wheel side. It's good that you moved the line to the head (hopefully) before it caused a problem.