A few updates on this engine.
First up I checked the Toda cams from IJ as they'd been in his (very sadly) spoiled engine. There was runnout well within Honda Spec on the centre bearing.
Bought the head to go with the bottom end from StrictlyBoost. Stripped it down, including he rockers, valves and LMAs, as well as the dowels, sensors etc..
Bottom end, fully stripped. I'm reusing the crank and stock rods but with new overbore pistons. Bores are in great shape.
I did the codes on the bearings and all the big ends are green/brown, whereas the mains are 1 size and 2 sizes up on green. A bit of extra clearance should be ok with ACL bearings. - better than too little!
Black and head are now in my boot to take to "Impulse Developments" in Rochdale. They seem to know what they are doing. I'm getting a rebore and new valve guides.
Here is y sorted box of parts for the head and the inlet valves soaking in oven cleaner.
And no build thread is complete without pictures of random new parts.... This is the above bits with Skunk2 valve seals and Carbon lined synchros for my gearbox.