Reply to "Air bleed holes in heads"

Larry, refresh my memory- is this a copper/brass radiator?
If so, note that Nor-Cal's Marcus Smith had an unexplained problem with his stock, twice-rebuilt radiator that suddenly started giving him overheating. Only when Marcus absently ran his finger across the core and noticed a fine gray cloud fly out did the problem surface; the solder holding the fins to the tubes had deteriorated and that 'cloud' was lead oxide! Such damage is unrepairable; he installed a new rad and has had zero problems since. I added a Fluidyne aluminum unit some 8 yrs ago (from PIM) and also have had no troubles. The only real difference between Quella's aluminum and a Fluidyne is, Quella uses welded 90 degree hose attachments, while the Fluidyne uses hoses and/or 90 degree fittings. Quella also has a custom dual-sucker-fan aluminum shroud available while the Flexilite dual-sucker-fan shroud I use is black plastic: less bling but the same results on the road.