Is that the same cylinder?

 

Well did they change the exhaust guides and valve seals or not? Or just said there is nothing wrong with them and you're good to go. I'd never go back to that place again.
I would have at least changed the guides, seals and exhaust valves on # 3 even if they all "looked" fine.
Then if it still did it ....... I would've donated it to the local fire department.

 

 

 

Maybe it wasn't the head?

Possible ring issue in that cylinder? How much oil is it consuming?

 

As a reminder:





I'm starting to look at Cayman S, SS 1LE, Vette GS, etc videos now. I am getting close to throwing in the towel now...

 

An exhaust valve guide wouldn't put the oil in the cylinder like that. Was the intake manifold dry?

 

I'm confused, are you saying you don't believe the photos of the oil coming out of the exhaust guide/valve stem?

I'll ask about the intake manifold.

Can't really see any oil consumption via dipstick.

Here is video of #3:

 

Either way I am done with this machine shop. I am going to call Arlington Machine shop this week and send my spare head there.

After that if i still have issues, I am selling the car and moving on.

 

I believe the photo, I'm just saying that because there is oil in the chamber, the guide is not the sole source, if it was leaking. How the oil is collected there could be from the air not flowing there due to it going around the guide/valvestem.

Was there oil consumption prior to this repair attempt?

 

I didn't know anything was wrong with the car until I checked the spark plugs before. Car ran fine then and now except for a slightly irregular idle that started before and is still there now.

Leak down and compression checks are perfect. Logs look fine. If I wasn't **** about checking things all the time I would have no idea something was wrong, except for the idle (which most people wouldn't notice) and the faint perpetual smell of burning oil when driving the car.

 

If cylinder 3 is already wet, how can you do a proper compression or leak down test?

 

Pal215 can attest to the fact that a ring issue will not always be show by compression and leak down. His MAP motor had perfect stats, yet smoked like a freight train and consumed a quart of oil every 100 miles. On tear down he found some upside compression rings.

 

Wouldn't something like that show up right away? It's been perfect for 4,000 miles. Every plug change has been clean up until the latest.

For sure doesn't consume oil anywhere close to that. Oil burning isn't really visual, it's more the smell, and it's impossible to tell if it's more the turbo or the cylinder.

If it is the bottom end, I'm going to just light the car on fire.

Every cylinder (Comp and leak down) test has been pretty much even. I would imagine if there was enough oil in the cylinder to throw the test it would show abnormal data, no?

 

When your cylinder is wet, it's like you already added that cap of oil. That oil will help seal ring leakage. But if you are leaking from valve stems, it could also help seal leakage there from being wet. Leakdown test will be hindered because it is wet.