Overheating on run stand
70 340 .030 over TRW old school pistons.
Ok then, for those that might want to know, from my 1969 service manual, (sorry, I don't have a 70 Manual) the piston/rings spec are;
Skirts;
half to one and a half thou, which is .0005>.0015
Ring gaps;
compression @.010>.020 , and
oil scrapers @ .015>.055 ..
Who on FABO, has successfully run in these windows?
Just trying to be helpful.