I`m procrastinating. Something bad happened to the GTs new engine. I've moved it to rv pad. Rear is on stands, hood is loose...I could've removed and used picker to lift front on way-high stands, but I took a nap instead. This all didn't JUST happen. I've been to machine shop, I've talked to parts supplier, I've examined and measured parts, I've stood there and looked at GT for multiple 10 minute stints...and then took naps. Today I got off work early with intentions of working on Opel- found it right where I left it - but it was cold outside and the house was all mine...so, yeah, I napped. When I woke up there was some daylight left, so I visited opelgt.com, then craigslist, then here. Hmmm, good opportunity for procrastinating with a long post, composed with thumbs on a kindle! Probably won't get read for awhile, maybe not even see a reply (always ensured by not posing a question up front). But hey, this is my impasse - exclusively here at classicopels for anyone to join in on.
The last 30 miles on my 800 mile old rebuild I began wondering "Has that rocker noise always been so noticeable?" - so I pulled valve cover and ran it, finding #2 hydraulic ex over a turn loose off preload! Must've backed off- easy fix. Noise was much better, but still seemed overall loud... 5 miles later I find it's loose again (but the nut hasn't moved). This sucks.
#2 ex lifter wouldn't pull out top, so I pulled the head to disassemble. #1 ex lifter was missing its crimped-on assembly retainer and the face was worn concave (as were 2 3 4 ex). #2 ex was worn worst and extracted out from inside. All exhaust lobes had severe corresponding wear-down. #1 ex lifter crimp ring is MIA and probably gobbled low and tossed throughout. Lower of front cam brng is just starting to take shape of cam oil groove. All INTAKE lifters and lobes are 800 miles PERFECT.
I need to finish a shopping list...so far I've listed head parts, but that could grow depending on how far I need to chase this down. I don't desire starting all over again with block disassembly, but I'm curious if rod and main bearings are polish wearing. Machine shop advises drop, measure and clean everything; Parts Supplier advises just clean and repair head parts, then put neodymium magnets at filter and drain plug to capture remnant debris.
I'll only hate you for siding with machine shops advice...I know it's safest answer. Maybe there's some shareable experience to help justify needing redo of top only, or perhaps workaround tips to check condition of rest of block in car. Any insights?