It is unlikely that hot shutoffs killed your turbo. Some parts just break and no amount of oil changes or babying could have prevented it.
On Mon, Mar 12, 2012 at 5:52 PM, Dieselhead <126die...@gmail.com> wrote: > I did not pull off the intake yet. That was on my list for the morning. > Along with wrapping the joint at the crossover/intake manifold with a > white rag and after a highway drive, checking to see if oil is leaking out > there. > > After 300k to 400k, the shaft on my old SDL had imperceptible side play, > but did have noticeable end play. It and the engine were fine. > > I have run M1, but I doubt any PO did. > > I asked Daughter about hot shutoffs, and I am not sure if she has been > guilty of that. > > > > All diesel engines have some blowby -- easy enough to check on a 603, >> just pull the hard plastic hose out of the intake boot in front of the >> turbo. >> >> I believe mine is bad, due to the amount of oil consumption (too high for >> the front seal leak to account for) and blue smoke on startup (new head >> about 60,000 miles ago, although quality of that job is unknown). >> >> To check, take the intake boot off with the engine stopped and rotate the >> turbo by hand. It must turn very smoothly and have zero axial play. There >> will be barely detectable side play as it has floating bearings. It must >> turn very easily, although it will not spin freely without oil pressure, >> and must not bind anywhere in rotation. Rough, tight, or gritty sensations >> while rotating it indicate wiped bearings. >> >> Last turbo cartridge I got was $400 for the job, rush basis with >> overnight shipping since I was in a hurry. Car ran MUCH better (it was my >> old Volvo TD). >> >> If you have used Mobil 1 for the entire time of operation, the turbo may >> indeed never wear out, but dino oil and interstate rest stops kill them >> fast -- you pull off the highway and shut it off with the turbine red hot, >> and the oil cokes in the bearings. Not too much later, the bearings have >> been eroded by the carbon buildup, and it starts to run slow and leak oil >> out both ends. >> >> A big leak out the back will make huge clouds of blue smoke, out the >> front you get excessive oil consumption. >> >> If you have oil traveling out the crossover while idling, you definitely >> have a leaking seal, and usually that means the bearings are gone. >> >> Peter >> >> On Mar 12, 2012, at 5:11 PM, Dieselhead wrote: >> >> From no responses, I gather nobody else has had a turbo failure. Is >>> that right? >>> >>> Is it correct that any oil in the compressor is conclusive evidence of >>> seal failure? >>> >>> Does anyone have experience with buying a turbo cartridge? >>> >>> >>> Does anyone know what turbo is on an 87 SDL? Garret or KKK? >>> >>> It looks like some things are accessible from above, and some from >>> below. What is the best method for getting the turbo out? >>> >>> >>> >>> ***********prior post*********** >>> >>> I think I am on to something. With the crossover off, the insides are >>> abnormally clean. Like a complete M1 wash. No gunk, no black, except >>> where oil has pooled a little. >>> >>> Started up the engine. when I revved up the engine enough so that the >>> turbo started, and held it there, there was oil climbing up the throat of >>> the turbo and running counterclockwise to the high side of the throat. if >>> I ran the RPM up to 3k or so, then the air blew away the oil. >>> >>> It is not enough to get a bath. I am suspecting that what I am seeing >>> is enough to wash the crossover/intake clean, smoke, especially on startup, >>> and washdown the port side of the engine through the crossover pipe not >>> being sealed well. >>> >>> My guess is that any visible oil is too much oil. Is this correct? >>> >>> The turbo seal failures I have heard of have been catastrophic. This is >>> not. But I suppose it could go catastrophic at any time. >>> >>> Any body got a cheap source for a turbo cartridge? Les Blumner had a >>> source that was something like $80. I have seen $250. >>> >>> >>> >>> >>> ______________________________**_________ >>> http://www.okiebenz.com >>> For new and used parts go to www.okiebenz.com >>> To search list archives >>> http://www.okiebenz.com/**archive/<http://www.okiebenz.com/archive/> >>> >>> To Unsubscribe or change delivery options go to: >>> http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.com<http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com> >>> >> >> >> ______________________________**_________ >> http://www.okiebenz.com >> For new and used parts go to www.okiebenz.com >> To search list archives >> http://www.okiebenz.com/**archive/<http://www.okiebenz.com/archive/> >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.com<http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com> >> > > > ______________________________**_________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives > http://www.okiebenz.com/**archive/<http://www.okiebenz.com/archive/> > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.com<http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com> > _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
