Only a small amount of DG activity today. Spent most of the day working on my brother's boat. Perkins 510 V8 twin diesel engines. A complete mess with all types of pipework and linkage rusting and leaking. Made the DG a tad lightweight. Not so however.
I snapped a drill bit when redrilling to tap an exhaust stud. Extra viewing to revealed a helicoil lurking deep down the hole. Removed coil. Its a bit of a mess. So now l will likely drill out to M10 (no deeper than 22mm) and fit a reducer stud M10 to M8. Any other options?
I unintentionally left both heads in today's lovely sunshine. By chance this allowed me to remove all four fire rings with a deft flick of a finger nail. RESULT!
Still no clues why engine was pressurising the coolant..which a tad worrying. I was hoping to see a scratch or steam marks etc and then say Aha! You bugger. But nothing that my layman eye can spot. Condition prior to proper cleaning. Can you see anything suspect? Looks like l forgot to photo left side.
Right hand bank..Or furthest from waterpump.
It was at this point l noticed an exhaust valve deeply seated. I used a blade placed across top of springs to view this valve is a different height from other three. Right side bank. Anything to worry about? Other side is fine. I do not intend dismantling valve train. Just cleaning and lubrication.
Regards
Stuart