David: Check out the turbocharger on the exhaust side and look for oil at the turbo fins. The turbo seals could be finished and that could be the oil consumption. Check the inlet side or compressor side for damage to the fins on the turbo. The air cleaner could be plugged and the engine might be starving for air. If the turbo is ok then a cylinder could be the problem as it might have been overheated and scored a cylinder wall which would have damaged the bore and affected the rings. Having worked on these gems many years ago I have come across some of these problems.
Regards Roger ----- Original Message ----- From: BoatRDavid <[email protected]> Date: Sunday, October 3, 2010 1:34 pm Subject: [UnifliteWorld] 8.2L Detroit Diesel using oil To: UnifliteWorld <[email protected]> > My Uniflite (’84,42’,SE II) is powered by 8.2L Detroit Diesels. > Starting this year (2010) I have noticed an oil slick that comes from > the exhaust of my Starboard engine. I also noticed that > when I first > rev up that engine (to set the alternator to charge) I get a > puff of > white smoke. I just finished an annual, 10-day, cruise and > I have > been plagued by the oil slick and the oil consumption on that STBD > engine. I have been worried about the engine as long as I > have owned > the boat because it is older than the Port engine (indicating that > some former owner may have abused them) and it exhibits low oil > pressure (~40 psi which drops to nil at idle) and has always use oil > more so than the newer Port engine. > > This latest excessive use of oil is unacceptable and I am thinking > about a rebuild or replacement. The engine has about 1850 > hours. The > oil definitely ends up out the exhaust and on to the water. My first > thought is about blow-by. Now I’m wondering if there is > somewherethat a seal could have gone bad allowing the oil into > the exhaust, say > in or around the turbo charger. I am going to check the > actual oil > pressure, but I don’t know what else to do, and that doesn’t suggest > anything about the cause of the excessive usage. > > Now that I am writing this down it has accrued to me that I am not > burning the oil. There is no smoke! And, there is no > blow-by present > at the breather. There is no dripping or leaking oil from the > engine. There is just a lot of oil being dumped into the > exhaust – > like a couple of quarts each day. > > Does anyone have any suggestions? I have yet to find a > mechanic in > the SF Bay Area that truly know about the marine version of this > engine (but I’m about to try again). > > DavidO > > -- > You received this message because you are subscribed to the > Google Groups "UnifliteWorld" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected] more options, > visit this group at > http://groups.google.com/group/unifliteworld?hl=en. > -- You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/unifliteworld?hl=en.
