Huge Blow-by

[works 510]

Hi,

Heres the story:

I installed a Rb25 into my ceffy, the whole time I was having a missfire issue, after swapping plugs a heap of times, trying different gaps, swapping other ign parts I had the shits and changed to the AU coilpack set up, just for something to do and it was worth a shot.

Fired the car up, let it idle till it warmed up, went for a test drive.

About 2 streets away from my house, driving under light load in a 50kph street, the cabin fills with smoke.

I shit myself, pull over and pot the bonnet

So I know what blow by is and what causes it, but Ive never seen it this bad before!

It was literally high pressure oil coming from the breathers on the rocker cover.

Started it up, drove back home.

Pritty much no oil left in the sump.

Mods include:

aftermarket intercooler, full exh, hks 2535 on 10psi.

Stock ecu

Now, Is it possible that a lean-out might of happened the last time I drove it, enough to do damage but not enough to show it at the time?

Head gasket?

Other issues?

Havent looked at the car yet, was kind of annoyed it didnt really want to touch it for the time being, just trying to determine the problem before I rip the motor out.

Cheers,

[2LV8ETR]

First thing to do would be a compression and leak down test.

[jba05]

yeah sounds like a holed piston... a head gasket would not be that bad....

[R31 POWER]

How are the breather pipes plumbed?

[MBS206]

Sounds like something isn't plumbed right...

[want_33]

agreed with the plumbing

i bet you removed all the charcoal canister and polution gear when you did the conversion, and havnt plumbed something up, if it was only under light load you may not have damaged anything yet. get the pressure cleaner out and take before and after shots so we can see where the oil came from and the so we can see how everything is plumbed under there, you will probly have an intercooler half full of oil aswell

[MBS206]

Hang on...

How did the oil "get everywhere" if all the hoses were on?

If it were all plumbed up, all blow by would be sucked back into the motor and burnt up...

If it had a catch can, the catch can would be full/over flowing in to the intake...

If you left off the cross over pipe, it'd spew oil all over the engine bay, and thus, you just need to connect it up!

[works 510]

I should mention that I havent got a catch-can setup, just vented to the atmosphere.

Beforehand there was slight vapour present from the rocker cover breathers, but nothing like what it has now