If it is oil starvation, you may find damaged rings, cylinders, valve stems & guides, rockers, bearings of rockers, cam, cam bearings, and that is just the upper end.
If the oil starvation is bad enough it could be crank bearings, con rod & con rod bearings to include wrist pin and piston.
You might be advised to find a used replacement engine to use while you do a complete rebuild of your original.
Form what you say, the engine is not safe to ride at all. Find a friend with a trailer.
I haven't seen the cylinder but I bet a lot of what looks bad is aluminum transferred to the steel cylinder lining and that can be cleaned up and you might have a usable though less than ideal cylinder. Honing or boring to the next oversize will definitely save the cylinder.
I have used many cylinders that others said wouldn't work but they worked fine.
Long live the internal combustion engine!
i just managed to reach my work place, luckily in between the pouring rain as its raining season down here in Singapore, took me about an hour & half for 5km, with some pretty steep slope.
striped the bike, would label the bolt and nuts as advice! thanks so much Fred for all the helpful tips!
Oh, guess I didn't realize you had ridden 400 km after changing the filter...right then. If it is an issue with the filter, it would be some other issue than "that one".
KJ, just KJ, ok.
2015 Yamaha XT 250, 1997 Suzuki DR 200; 1999 Toyota 4Runner
Past rides: 2007 Honda Ruckus, 2007 Yamaha TW 200, 2007 Kawasaki Ninja 500, 2009 Kawasaki KLX 331S; 1994 GMC Sierra 1500, 1987 Nissan Pathfinder, 1992 Acura Integra, 1986 Honda CRX, 1989 Jeep Cherokee, 1994 Chevrolet Astro Van, 1979 Volkswagen Rabbit, 1984 Jeep Cherokee
haven't got the chance to pull the top and cylinder, but a very kind friend had brought his tool set so i can continue.
though here's what i managed to open up yesterday:
1/ Valve cover exhaust end (does this look like the valve is intact?)
2/ Valve cover carb end (does this look like the valve is intact?)
3/ Timing chain cover
4/ Oil filter
5/ Thick gooey metal chipped oil
6/ Oil filter (correct one with 4 holes
Good photos. Valve stem, keepers,spring, rocker, cam chain, chain tensioner,cam gear all look good.
Amount of metal shaving at the oil filter does not look good.
I believe things will not look pretty when you remove the cylinder head. Post more photos of what you find.
But all is not lost. Now with tools we can lead through next steps. The videos and the thread r.e. base gasket repair should show the next disassembly steps.
2003 TW200 "Betty Boop"
2006 TW200 "Mr.Gizmo”
Neglected 2-Smoker Hanger Queens:
1981 KDX175 Enduro
1982 YZ250G MX