Nice Adam!

So i revved earlier with my hood open, showing one of my friends the completed car, and the dipstick popped out! This is caused by too much crankcase pressure. But why i wonder?

motor had a spontanious boner, think nothing of it

Im wondering if its due to oil chunking up due to my gutted valve cover or something lol

Put a stock cam cover on and see.

check valve didn't close

the check valve closed sounds like it may be time for a ring set

how are you sure? I thought the check valve going bad was common on LSJ's

What check valve?

My car started doing this after i had the intake off to do dual pass. I had bent the gasket a little when i installed it and it wasn't sealing around the pcv hole. I'd do a compression test, if everything looks fine with that then check the intake gasket after.

Agreed.

If it still does it leak down test time

yeah admittedly i do still need to do leak tests and compression tests.

random thought; on top of the manifold, passenger side, there is a bosch sensor of some sort, i think its a map sensor? not sure; anyway i noticed the little o-ring holding it in was really loose fitting so i replaced it with a fatter one. perhaps it was meant to be the way it was? :r:

all gaskets are brand new and installed with proper torque sequencing but i guess if it comes down to it i'll re-do that b.s.

Boost leak check is what you are referring to. But for your dipstick popping problem a leak down test to the motor is what you may need to perform if you can't stop it from happening

I second that.


Crankcase pressure pops the dipstick. Plain and simple. All you have to do is determine where it's coming from. If the check valve is stuck completely open, it could be that. But generally they don't get stuck, just leak.

Compression and leakdown test.

nope

the pcv valve in the manifold

a car will pass a comp test and fail a leak down

the chances of the pcv valve leaking is slim to none and it did not pop the stick on the dyno with the same valve cover on it not to mention a valve cover will not cause excessive case pressure there are only 3 things that will rings or piston and a the pcv valve and that's not whats causing his

But rice is running a completely gutted valve cover with a hose running to his exhaust I believe so the whole system isn't working properly. That's why it was suggested to just try a stock valve cover.

all he needs to do is to disconnect it from the header but those check valves they use in the evac system rarely go bad good idea though

Yup, I still feel his gutted valve cover is causing this.... If so, at least it will be any easy fix.

I WAS gonna do that but now its a hose going to a catch can and back into the intake so it should work just as good or better than the stock system (the stock hosing was clogged)

Once you know how the stock system works you will realize how much of a fail running a gutted valve cover is

Does the catch can happen to have an internal check valve

I'm not sure i understand the point of the gutted valve cover anyway.

dose not need one

It was intended to work with the pan e vac setup but didnt.

I should have listened to you guys :bow:

Even though your gutted VC is less than ideal, I don't think that is the main culprit to this issue. I'd do a leak down test. Not because I think your rings are shot necessarily, but since you had the motor apart and I don't remember if you re-ringed and honed or put it all back in the way it was. Does the car burn any oil at all?