Yeah, I didn't actually try to do the math, I suck at it. I figured that was a lot of run time in anyones book. I did think it was an interesting picture and thought you might like to see it! -- Mark Price Morgantown, WV 1969 AMC Rambler, 4.0L, EFI, T-5 -------------- Original message ---------------------- From: Tom Jennings <tomj@xxxxxxx> > On Tue, 1 May 2007, Wrambler242@xxxxxxxxxxx wrote: > > > Wow! Is this common??? > > http://www.swri.edu/4org/d03/engres/spkeng/sprkign/454Cyl.htm > > WOW!!! > > Well he says "rapid valve recession..." then "...15,000 hours" > of operation. > > Umm, this isn't a problem, it's spectacularly good! > > If you drove 15000 hours at 60 mph, you would have gone 900,000 > miles! And we can bet that in that application that motor was > working hard that whole time. > > I dunno what my valves look like, to be honest. No reason to > pull the heads on my LP 232. But it's been on LPG-only for 18 > years, some 200,000 miles, and while compression is dropping > (125 psi +/- 5 now, down from 140 in 1990) the valve stems > haven't yet hit the valve cover. > > > Those cheapskates got a lot of use from one old chevy BB! > > _______________________________________________ > Amc-list mailing list > Amc-list@xxxxxxxxxxxx > http://www.amc-list.com/mailman/listinfo/amc-list _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list