SR20 Oil Blow-By

[LuckyX2]

Hey guys, I'm having a pretty serious problem with my SR blowing oil out of the T-fitting on the valve cover.

I upgraded to a gt2871 and with the extra boost I'm running, oil blows out like crazy. I was basically filling my catch can after a week or two of off and on hard driving. How I had it routed was that the right of the T went directly to the block while the left of the T went to a catch can which went to the intake piping. I wanted to keep it stock but the tubular manifold I put on blocks the stock catch can mounting.

After getting all that blow-by I decide to try it routed like stock but with longer hose since, like I said, the stock mounting position is blocked and after a few hard pulls and a little sliding, I took off the hose going to the intake and unfortunately there was oil in it then too.

Long story short, catch can on the left or right of the T, I still lose oil.

As a side note; I have the pcv valve disconnected since on my new intake manifold I didn't yet get the fitting for it. However, I don't think this should be a problem since the pcv does nothing under boost anyway and that's when I'm losing the oil.

How can I not lose so much oil? Thanks

[s14unimog]

The last time I had that much oil blowing out I had shattered three pieces from my #1 piston ring land. The car ran pretty good but the excessive blow-by would fill a catch can in a couple hard pulls. I would do a leak down test and verify that you don't internal engine damage. I had my catch routed like that and its the most appropriate way to do it. A healthy engine with a properly routed catch tank system (as you have) should only see oil when a problem is present. Sorry to tell ya.

[slider2828]

Agreed excessive blowby on the street after a full pull means the piston's or the rings are gone.... Leak down test before you bother with anything else

[LuckyX2]

Always problems with this thing haha.

Well, I'll try to leak down test soon and report back with the results.