Several things..Loud knocking noise,weber,header..
First and foremost, our deepest sympathies for the tragic loss Chad and Mindy are experiencing. The response from this board has been overwhelming. It's nice to know in todays world, strangers can still pull together and help out those in need, be it financially or emotionally.
I recently rebuilt the 1.3 in my 88 because I heard a loud knocking noise in it and when I took it to a shop, I was told it sounded like piston slap. Now when we tore it down, the lower end was perfect. Bores all checked fine, pistons fine, rods, pins, crank, everything plastigauged well within tolerances. We replaced pistons, pins and all bearings, and the head with one I bought off eBay. My head was chewed up in the cam journals, so I figured this must have been the source of the noise. Now, my biggest mistake was to not tear down the replacement head, because now the noise is back, and seems a little worse than before. To let you know, the head I bought had a completely plugged oil galley at the dist end. It definitely sounds like an upper end noise to me. Doesn't seem to be deep in the engine at all and is a very fast rattling type of knock, like perhaps rocker noise. I've adjusted lash several times, so I'm starting to think bad springs maybe? All adjustments made with completely cold engine. I figured if this head is doing it too, maybe it's common enought that one of you may have had it too and can offer some advise. At this point, I'm thinking of buying a new head from Petroworks with the isky cam in it, and the header/weber combo from Calmini for some extra oomph.
Would like to hear from anyone who's purchased these items and who may be able to assist in troubleshooting this thing.