Calling GN7 and all others
Every 2 or 3 times out I run a compression check and look under the valve covers. After compression check I pulled valve cover to look and double check valve lash and this is what I found. All of the shavings were on even side 2,4,6,8. I noticed 1 piece on valve cover gasket. I used a magnet and picked up most of this in back above #8 cylinder in the pool of oil that sits in the corner.
What's coming apart? Valve guides?
Piece on my finger was biggest piece
A little back ground, when I built this motor a couple of years ago I did a lot of research, unfortunately I had not found this site yet. I bought my JE flat top pistons & rings from Teague Marine (5 minutes from my house) when I was picking them up Bob was kind enough to come up and ask me what I was up too. Building my engine around my Procharger Bob offered me the specs he uses for the pistons bore & ring gap on a blower motor, he wrote them down on the box and I told my machine shop to do this. What I didn't know at the time, but have read here is the valve guides in a marine application should be a little bigger too. I simply asked for a valve job and I expect it was done to automotive clearances.
Compression after break in was 7 cylinders at 125 and 1 at 123.
I did this cold and generally speaking I'm looking for differences at current check, not so much a 10 psi difference from last check to this one, however #6 has me concerned due to what I found.
Last check 3 & 4 were 135, 6 & 8 were 128 Metal shaving found near 6 & 8 not that it means anything.
On a side note all of the spark plug washers are stuck to the heads. More annoying than anything else although it would be nice to get them out. Any suggestions? Small sharp hook on a hanger wire?
Thanks for the help guys