Bessie's got 156k or so - too cold to go out and confirm (17 deg). Yeah, Rick - while we were out just now I was thinking about the PAIR valve. Looks like just a few bolts difference and a gasket.
While I'm in there, I'm going to fish the freeze plug out of the block I pushed in there 12 ago when installling the block heater. This will make a fascinating study in that I just opened up an engine with an assumed 'average' maintenance with 140k and know what it looked like. Now I'm going to open up another with 156k that has been literally overmaintained with the highest grade of consumables (synth oil, mid grade/premium fuel, NGK plugs, Toyota filters, twice annual Techron and a couple competing carbon removers, etc). When I open it up I have the expectation that I will see notably less or minimal cylinder carbon, a clean valve cover, no carbon ring above the piston rings, no valve deposits, clean injector tips, etc. If not, then I think it will be worth noting. I'll be surprised if I don't see this difference easily.
Yes, it's going in for the full Monte on the head as I like what the head milling did for the 97 and having fresh valve seals is a bonus that comes in Dan's kit already. Just seeing the head so clean and shiny when I got it back gave me wood. OK, that was too much information but suffice to say I liked it and I think all that work was only $250 or so - seal install, valve seats, valve grind, valve clearance adjust, total cleanup and mill .010. I'm actually toying with the idea someone had (LRQ??) to have the alloy valve cover polished. Would look cool and maybe Dan can get me a new sticker for it? Dunno.
Phil, I sent a sample from the 93 in at around 100k just for a data point. You make a good point and a reminder to get a sample on this one before opening it up. The dipstick looks normal, so at first blush it looks like the classic blowby into cooling port. Good point. I'll have to get a sample before opening it because during the work a bit of coolant inevitably falls into the oil ports. Minor, but at Blackstone's level it would pick it up. Thanks.
I didn't get to the sparkplugs, but will Sunday morn.
Got a couple questions for you guys. Given that I'm going to leave it sit while I'm on vacation for a couple weeks, I think it wise to do some things to ensure there's no coolant sitting in the cylinders. Don't need a rust patch on the cylinder walls or worse a stuck ring. So here's what I'm going to do:
1 - remove sparkplugs (assume this will confirm my diagnosis)
2 - drain coolant
3 - turn engine over without plugs to blow any coolant out
4 - use marine engine fogging oil in cylinders (used for winter layups)
5 - repeat 3 and 4 a couple times until my anal side says "enough"
6 - drain engine oil
7 - go on vacation
Anyone see a flaw or something I could be missing? You know what I'm trying to avoid - any damage from the engine sitting with some unknown level of coolant intrusion in the cylinders/oil. It will remain well below freezing in the garage while I'm gone. Thanks!
DougM