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Neffets Neffets is offline
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Join Date: Jan 2013
Posts: 148
Help, newly built engine burns a lot of oil

So my newly built 2.7 with JE 9.5 and Dc 30 is going through oil like gasoline...

At first i didn't notice since I was changing oil often, but now I have driven 500miles, and was ready for the first valve adjustment, but the last 100miles I've smelled the burnt oil and seen the level on my gauge going lower and lower.
So I have lived in denial for some 100miles (hoping it was because it's running rich)
I did the break in with my old carbs, but it's running a bit on the rich side, 12:1 @crusing, 11.5 on moderate to heavy acceleration.

Today I parked here in the garage after doing a 100miles drive, filled oil up so it was 3/4 on the gauge, when i came home it was on the red mark...
Engine is dry no leakage, but I can see blue smoke coming out at high rpm.
It's not pulling oil into the carbs, since I have a catch can and a breather outside of the air filter. New valve guides and seals.
Oil is 20w-50, break in as per wayne's book

JE pistons and rings gap:
1st ring 0.15mm
2 ring 0.25mm
Oil ring 0.35mm

Piston to cyl clearance 0,0015"

Did a compression check today warm engine.
Cyl1 207psi
Cyl2 210psi
Cyl3 214psi
Cyl4 194psi
Cyl5 204psi
Cyl6 210psi

9.35% (but valves not adjusted yet if that affects it)

And this is what the spark plugs looked like.




Doing a leak down test tomorrow, but when driving the car it appears that it burns oil at above 3500-4000rpm, or at least that's when its visible.

So I guess my oil rings haven't seated? Will they do or is it time to pull the engine out again?

Last edited by Neffets; 11-23-2014 at 10:39 AM..
Old 11-23-2014, 10:33 AM
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