I'm about ready to give up on this. Steve's 2180's come with 40mm intakes and 35.5 mm exhaust. These are larger than the valves in a standard Type 1 head so I consider them large valves.
At 500 hours the valves were fine. Everything was fine except the re-used Chinese valve springs that Rimco used when they rebuilt the head for Steve. I had two broken ones, one I hadn't noticed since it broke next to the retainer and was hard to see and the other one which put me down in Venice, Florida for a couple days. When I got home I put new valve springs in and newly cut seats with some Manley valves but I could have continued to use the old valves. I don't understand how people have problems with these engines or these valves. I've heard of 42mm intakes and 37mm exhaust valves - is that what people are thinking of when they use the term "large valves" on a Type 1? Those may work fine as well . . . dunno. I think some people might do better with boats or tractor pulls than aircraft engines. Mike KSEE ____________________________________________________________ Want to place your ad here? Advertise on United Online http://thirdpartyoffers.juno.com/TGL3141/559b0735a318d7353f13st02vuc
