Denny - I am aware of the nickel content of the monel steel. I was very surprised at the rust on a steel valve the first time I saw the rust. Since then, have seen MANY more.
And I can assure you that I did NOT paint the little brown spots on the valve in the picture
We have tried unsuccessfully to locate a supplier for triangular shaped monel steel in order to manufacture these valves for those who still think they are better. And yes, I am aware that the Rochester B used a square valve, which will work for low fuel demand; but the triangular valve is necessary (or machine feed holes in the seat) for larger or performance engines. The fuel flow past the square valve is insufficient for that type of engine. We can acquire the square material but the cost is ridiculous.
The effect of ethanol on neopreme seems to be that the neopreme will "harden" if exposed to ethanol and then allowed to dry. This effect will kill the neopreme accelerator pumps because the skirt of the pump can no longer flex, but does not harm the sealing property for a fuel valve. This is just one of the reasons why we try to inform enthusiasts that their best form of preventive maintenance is to start the engine at least once per week, preferably more often than that.
Jon.
