steam from valve cover - low compression - now what
Last week after a hard pull on the street I had steam bellowing out of the valve cover breather. I limped it home and looked at the dipstick. Water.....
shortly after putting on my turbo I blew a head gasket and replaced it with ARP studs and felpro 1011-1 gaskets. I though I had blown another head gasket - I've had some boost creep recently and can't honestly say I looked at the boost gauge during the hard pull that seemed to end it all. I'm guessing but can't confirm that the boost spiked.
I ran a compression test and had low compression in cylinder 5, 7 and 9. Yes, 6 was find but otherwise driver side was all low.
today I pulled that head and replaced the gasket. The gasket was damaged - but the metal rings were not blown. I put it back together and checked compression. It is still low in those same cylinders.
This time (should have the first time but didn't) i put a little oil in one of the bad cylinders and the compression went up from 60psi to 80psi.
Do I have bad rings in these three cylinders? Could one boost spike cause that?
visually the valley looks fine -but what would a split block look like?
What is my next step? Get the block out of the car and to a machine shop? Buy a new short block? I might attempt to rebuild the shortblock myself - but I know I'll be in way over my head and will need lots of guidance.......
If the block is bad should I replace with another seasoned 302 and hope for better luck? replace with a 351w but use my same gt40 heads and as many other parts as will carry over? Or buy a boss302 block and reuse as many parts as possible.
I need to get this back on the road with as little money as possible, but will also spend what I need to get it right.
Goal is/was 400 RWHP.
Lots of cuss words and beer tonight...........