Re using cast iron rings?
Ok I’m in the I wouldn’t do it crowd but I gotta tell you a cast ring story. Back in the late 1980’s early 1990’s I was running a 1974 (440) Duster with stock crank, stock reconditioned rods, and TRW (.030 over) pistons. I had been racing this combo for years and it needed a mid season rebuild. Lacking most of the bore measuring tools I now have I honed it at home and but new rings and bearings in it. I knew the bore was shot, at least .011-.012 but running points I had to get to the track. Well it smoked bad during Friday’s and Sundays race so Monday morning I ordered 16 cast iron rings. I was ready to rebuild it again on Wednesday when the rings came. By fridays race I was ready to go. That engine ended up running 9.82 and lasted several more years. There was no way in heck that moly rings would seal with over sized bores like that.
Ok I’m in the I wouldn’t do it crowd but I gotta tell you a cast ring story. Back in the late 1980’s early 1990’s I was running a 1974 (440) Duster with stock crank, stock reconditioned rods, and TRW (.030 over) pistons. I had been racing this combo for years and it needed a mid season rebuild. Lacking most of the bore measuring tools I now have I honed it at home and but new rings and bearings in it. I knew the bore was shot, at least .011-.012 but running points I had to get to the track. Well it smoked bad during Friday’s and Sundays race so Monday morning I ordered 16 cast iron rings. I was ready to rebuild it again on Wednesday when the rings came. By fridays race I was ready to go. That engine ended up running 9.82 and lasted several more years. There was no way in heck that moly rings would seal with over sized bores like that.
