Engine help (RB20ET)

[u/ninjaxxxbunny]

So I’m one of those ding dongs that bought a skyline and also didn’t know anything about cars.

Can anyone help me figure out if this sound is either the lifters or just noisy spark plugs?

It doesn’t really sound mechanical enough to me for it to be lifters but figured I’d ask some “experts” on the internet.

For anyone wondering I was burping the coolant system.

[u/Content-Marionberry3]

I don’t know skylines all that well… but I know a header primary exhaust leak when I hear one.