1.5 burning oil ?

[theman53]

If it was smoking before the head and still is now then it is the bottom. A ton of times you seal up the top and it makes it worse as it is tight and now the bottom still isn't tight so the oil burns worse than before. Glad your experience worked at 300 but that is horrible compression for a 23:1 diesel. I have had similar experience as you with 350psi and had to rebuild.

[TylerDurden]

Diesels don't care what oil, they burn it all unless timing is off.  Sooty/dark is overfueling, white/blue/grey is retarded timing.

Timing with a dial gauge is only half the story - Injector break pressure is the other half.

[8v-of-fury]

Diesels don't care what oil, they burn it all unless timing is off.  Sooty/dark is overfueling, white/blue/grey is retarded timing.

Timing with a dial gauge is only half the story - Injector break pressure is the other half.

Precisely. lol

[jlpst94]

My Dads telling me the compression ring can he good but the oil ring can be shot. 
I ordered new rings today and i'm gonna see what happens.
As for the question about diesels burning anything and its the injectors....... The injectors all pop at right around 1800.  Also the throttle runs away slightly so I know its oil.  And its blue smoke.
Thanks for all of the opinions guys.

[TylerDurden]

Fair enough, if the engine is on the verge of runaway, I'd go for rings.

It could be instructive to advance the timing "by ear" to see the results. I can easily imagine that low compression will delay the start of combustion, so advancing the timing might be one way to postpone a ring-job (but come winter, that might bite ya).