So, I've got my pistons/cylinders mounted up and yesterday installed head/rockerbox and huh???????????? Background- A10 engine, no numbers, alloy head, partially disassembled when purchased with a pickup truck load of parts. Anyway..... No problem installing head, though I couldn't find a torque value in my Haynes manual. Somehow, thought I'd read 22 lb/ft, so that's what she's at unless someone here knows different.
Fitting the rocker box was a pain. Not getting the pushrods in the cups, just used a hook and managed that. Fitting it between frame and valve springs. I had to grind off the taper in the stud ends and file just a hair off the top rear cover boss, and at that still scraped paint from frame tube (no big deal). So I assume I have the longer studs I've read about here on the forum. My parts lists from '54 to '63 don't show the nuts for the rocker box studs, except for A7S/S, which shows long sleeve nuts for the rear studs. Looks like what I should use on the A10 as well?
The head will probably need to come back off. I had disassembled to inspect valve seats and faces, measure guides etc. and all seemed good, but with rocker box on, my rocker adjuster screws to valve clearances are a mess. The right intake is backed all the way out, to where the valve stem may be contacting the rocker rather than the screw, while another (can't remember which) had to be screwed in quite a ways and the other two seem about normal. There was no apparent valve recession in the head, but that was just an eyeball judgement. I'll get down to the shop after I walk the dogs and look at the rocker/valve angles to try to figure out if the problem is in the head or the rocker box before I pull the head back off. Looking at parts books and several rocker boxes and rockers I have, I don't see that there were any variants that should cause a problem. Any other ideas what may be going on?
