Engine Pictures. Critique needed.

[gawath]

Took the head off of my motor to inspect a few things and took some pictures. The motor has CP pistons/stock rods and has been broken in for ~1500 miles. Just want to know if you guys see any issues that I may not have found from my inspection. I noticed a lot of buildup on the top of the pistons and oil. I’m not too sure where the oil may be coming from. The cross hatch from the hone is still showing.

Head - Cylinder 1Cylinder 1 Exhaust PortCylinder 1 Intake PortHead – Cylinder 2Cylinder 2 Exhaust PortCylinder 2 Intake PortHead – Cylinder 3Cylinder 3 Exhaust PortCylinder 3 Intake PortHead - Cylinder 4Cylinder 4 Exhaust PortCylinder 4 Intake PortCylinder 1 TopCylinder 2 Cross HatchCylinder 3 Cross HatchCylinder 4 TopAll four CylindersValve area

[wild_maxx]

thats alot of built up **** for 1500 miles..... were you burning any coolant or oil? What were the compression numbers before you pulled the head off?

[ShionS14]

what is up with your intake? those pictures look like you have calcium deposit on the intake side!

[wild_maxx]

what is up with your intake? those pictures look like you have calcium deposit on the intake side!

mmmmm healthy motor lots O' calcium

[projectka-t]

WOW thats no good......

[S13 240SX]

that looks like sh*t...heh poor ka.

[gawath]

what is up with your intake? those pictures look like you have calcium deposit on the intake side!

That is the exhaust side of the head. I'm thinking it's due to high temps or burning of coolant/oil.

[gawath]

thats alot of built up **** for 1500 miles..... were you burning any coolant or oil? What were the compression numbers before you pulled the head off?

That's what I wanted to find out. Everything checked in fine. Compression at 180psi across. No smoke coming out the tail pipe. One day my head started making a lot of noise. I thought it may be bad valves, so I decided to take the head off. Now I'm thinking that it may be oil somehow getting into the combustion chamber.

[wild_maxx]

have the valve stem seals been replaced? Was there any smoke while driving it? or just on accel?

[ShionS14]

no i am actually talking about your intake ports

[dontbugme]

That's what I wanted to find out. Everything checked in fine. Compression at 180psi across. No smoke coming out the tail pipe. One day my head started making a lot of noise. I thought it may be bad valves, so I decided to take the head off. Now I'm thinking that it may be oil somehow getting into the combustion chamber.

There's some serious oil burning going on here. Either your turbo seal let go or your rings are shot. Compression pressures could be fooled by lots of oil getting by the rings. Check the outlet of the turbo compressor to make sure that's not filled with oil, next, I'd like to know how you're routing the valve cover pcv pipe. Done the wrong way and you could see mucho oil consumption. In the future, it would be nice if someone could follow you to determine if and when it smokes. Often, the driver never notices things like this as they're too focused on the road ahead and unless they can smell burnt oil never realize how bad a smokescreen they're laying down. Valve seal leakage is usually indicated under high vacuum conditions, i.e., going down a long hill with the throttle closed and then seeing a plume of smoke when you get back in the throttle. Bad rings and the smoke will occur under hard acceleration.

What kind of 'noise' was the head making and at what frequency - engine speed or half engine speed.

[Nismo_Freak]

That motor had a blown headgasket and was leaking alot of coolant into the cylinders.

You will need to re-hone the block at least. There is a hot spot and a little bit of scoring on the cylinder wall. More than likely from a ring dragging.

[gawath]

There's some serious oil burning going on here. Either your turbo seal let go or your rings are shot. Compression pressures could be fooled by lots of oil getting by the rings. Check the outlet of the turbo compressor to make sure that's not filled with oil, next, I'd like to know how you're routing the valve cover pcv pipe. Done the wrong way and you could see mucho oil consumption. In the future, it would be nice if someone could follow you to determine if and when it smokes. Often, the driver never notices things like this as they're too focused on the road ahead and unless they can smell burnt oil never realize how bad a smokescreen they're laying down. Valve seal leakage is usually indicated under high vacuum conditions, i.e., going down a long hill with the throttle closed and then seeing a plume of smoke when you get back in the throttle. Bad rings and the smoke will occur under hard acceleration.

What kind of 'noise' was the head making and at what frequency - engine speed or half engine speed.

The motor was not turbocharged. It was broken in all motor. The noise from the head sounded like bad valvetrain. Loud valvetrain tapping at idle and while cruising.

[gawath]

That motor had a blown headgasket and was leaking alot of coolant into the cylinders.

You will need to re-hone the block at least. There is a hot spot and a little bit of scoring on the cylinder wall. More than likely from a ring dragging.

The headgasket was a brand new felpro. The only other thing I can think of is that it wasn't torqued down tight due to the ARP head bolts.

[gawath]

have the valve stem seals been replaced? Was there any smoke while driving it? or just on accel?

Valve stem seals have not been replaced. I never saw any smoke while driving the car.