Camshaft bearings toast?

[oscaryu1]

No oil for ~50 miles, threw a rod, AAA didn't come, and drove that distance back home on 3 cylinders and NO oil lol (blown seal). Camshaft journals don't look too rough (looks decent for 265k mileage of a car actually), but the journals are worrying me.























Cylinder head journals look OK. Most of the wear is on the top half of the "bearing" (is that what you call it?), seeing as the camshaft has to constantly force down valve springs (pushes cam up, and with little to no oil film...)

The ones with a slightly yellow tint (guessing oil stains from age) feel smoother than the lightly scored aluminum-colored ones.

Any tips? Reuse? Junk? Installed a sleeve (how?)

Don't really want to junk head... the actual head's journals are in decent condition. Anyone know where I can find the "top" part of the journals?

[oscaryu1]

BTW: Pictures slightly overexaggerate condition of bearings. They don't look THAT bad (especially the one which looks heavily scored on both sides... it does feel rougher on those sides than the oil channel slit in the middle, but not by an extreme amount. Fingernail doesn't catch anything, just rougher)

[71Corolla]

Those bearing are gone. Sorry to say, it's probably time to replace the cylinder head. You could try going ghetto and getting a bunch of caps from a wreckers and checking clearances and hope you get within spec. I did this before many years ago and surprisingly the tolerances of all of them were close enough.

[oscaryu1]

The cylinder's journals actually don't look that bad, in fact, much of the yellow oil-stainage remained. I'll get pictures of them later, but I really do think they're in pretty good nick. I can feel a few bumps and scores every other bearing or so (the ones in the picture that is), so I'm thinking of ghettoing it out. I don't like doing so, but unless I can find a proper boring bar to put in a lathe, welding up the journals and reboring them out for the camshaft (the proper way), I might be stuck like that.

If you line them up (they're numbered - 1 to 4), the scoring (although light) gets progressively worse as you move on... major lack of oil pressure (from lack of oil)

I'm also planning on turbocharging this 3SFE at relatively high boost... and because of that, heavier springs and such. I don't exactly want to cheap out, but equiptment is expensive

[oscaryu1]

The only score on the head...



















IMO the camshaft and journals are in decent condition (the one with a score... is it really that important? Heck, free oil distribution score )

The cams looks decent as well, a nice micropolish should make it look good again =]

Any opinions? I think I will ghetto it out and find some top camshaft "caps" from a junk motor... plastigage them, and hope for the best ><