I have an old RV-4 that I didn't build, IO-360-EXP with Hartzell CS prop. The tach/manifold is duplex, electric tach/manifold. The manifold pressure part has failed, MP needle is maxed out reading something like 32. I haven't torn into it to figure out what's wrong. I have a second source for MP, a digital readout from my Plasma III ignition.
Anyway, what are y'all using? Did this gage come out of a Mooney?
Anyway, what are y'all using? Did this gage come out of a Mooney?
