Thanks David, there was mucho oil floating on top of the old degreaser. and considering that I had to clean the oil pump, pan and filter canister, I couldn't be bothered trying to save it and gave the weeds a good dose.
Today was the "Make or break" day for me, one of the jobs I hate the most is fitting the cylinder block over the pistons without breaking a ring. It's easier to install stock pistons into stock cylinders, because Honda (or Kawasaki, Suzuki, Yamaha etc) provide a nice big chamfer to help slide the pistons in without busting a ring, but when you bore the sleeves out an extra 4mm, suddenly there's very little chamfer, so there's lots of poking and prodding with fingernails, screwdrivers, and even a big cable tie was used to help compress the rings without busting any, which would have been bad. The worst thing was I had to do it twice, as just after I'd worked the last ring into the #1 bore I realised that the top of the camchain tensioner assembly was still outside the block, and I had to lift the block back off to poke it back in, then I had to re-fit the rings again. Oh well, I finally sorted it, and was happy that the pistons were in, and no busted rings.
K2 Bitsa 10 Mar 2021 3 by
Terry Prendergast, on Flickr
Now I hate people slathering Threebond case sealant over gaskets, but I do like copper gasket spray, so once I found all the dowels for the fancy new cylinder block seals and put them in place, I found a new 836cc head gasket, and gave it a good spraying on both sides. I let it dry completely, then dropped it in place.
K2 Bitsa 10 Mar 2021 4 by
Terry Prendergast, on Flickr
The head went on next, and I found the best 16 head nuts from a pile that I've acquired over the last few builds. I degreased them and their washers, then gave them a coat of WD40, and sprayed a little WD 40 on the cylinder stud threads, then progressively torqued them down to 20 foot pounds. Yes I know, the book says 15 or 16, but I've always taken them down to 20, and they don't leak. I'll back them all out again tomorrow then torque them down to 20 again, and then install the 6 x 6mm bolts, glue in the pucks, replace the oil jet and O rings, install the cam and cam towers, install and time the Andrews A Grind cam, and tighten the cam chain.
By then it'll be ready to shove back in the frame, and go for some rides, should be good. More tomorrow, if I survive my 61st birthday.

K2 Bitsa 10 Mar 2021 7 by
Terry Prendergast, on Flickr