Yep,Zip.
I beleive its referred to as Heat Cycling?
As far as Heat-Treat?Yes,It is a Option.And I had that done once also,trying to save a Set of R/M Dart Heads.This was about 30 years ago and the Cost was 160.00 or 180.00 ?BUT,then of course you have the Expence of another Valve Job and resurfaceing,and so on?
I know its Hard to PULL the PLUG,but sometime you have to just do it!!!
If I had to do it all over again?
Go with a New set of Bare castings that You can use your Parts in.
SORRY!
Later
G
